With the next total solar eclipse coming up on Aug. 12, you still have plenty of time to grab solar viewing gear for getting a better look at it. If you are hosting a solar eclipse party or want to make sure everyone in your family has a chance of observing the sun safely, grabbing a multipack of solar eclipse glasses is a great shout. Whilst they may seem like once-in-a-lifetime events, they happen fairly frequently in astronomical terms and can be predicted thousands of years into the future. We have an annular solar eclipse coming on Feb. 6, 2027 and the 'eclipse of the century' coming on Aug. 2, 2027.

Get a six pack of Galaxium solar eclipse glasses, on sale right now for $9.95 at Amazon.

• We've got you covered with reviews and rankings of the best telescopes, binoculars, star projectors, cameras, drones, Lego, streaming and more.

Solar eclipses are beautiful phenomena and I've heard that observing one is a truly monumental experience. I have never seen one but I can only imagine how mind-blowing it is to see the lunar disk cover the sun and plunge a portion of the world into shade during the day.

Whilst beautiful, eclipses should be approached with the utmost caution. Looking directly at any portion of the sun during any time of the day can result in severe eye problems and even full-blown solar retinopathy (permanent blind spots). This is why you must always use ISO 12312-2 approved solar eclipse glasses or solar viewing gear from reputable skywatching brands.

You should never look directly at the sun, even during a total solar eclipse, as it can result in permanent blindness. This is why it is important to buy solar viewing gear from reputable brands and look for compliance with the international ISO 12312-2 safety standard. Before using any solar eclipse glasses or viewing gear, you must check for scratches, punctures or tears before use to make sure they are safe. This is where a big multipack comes in handy as repeated use of the same pair of glasses could easily render them unsafe to use in years to come. With Amazon Prime Day in full swing, there are some good deals across solar eclipse glasses and other skwatching gear on our Prime Day hub.

The American Astronomical Society (AAS) publishes and updates a list of reputable suppliers on their site for safe solar viewing gear but you can still get safe viewing equipment that is not listed there, as long as it is compliant with the ISO 12312-2 safety standard. Galaxium and Helioclipse are not endorsed by the AAS but they are ISO 12312-2 compliant and have been made recently, so they are less likely to have degraded over time. There have been cases of companies misprinting the ISO standard on their glasses and have caused confusion, so just watch out and double check the ISO standard on every pair for maximum peace of mind. If you are unsure at any point, it is never worth risking your eyesight for. To skip that worry altogether go with an AAS approved manufacturer such as Rainbow Symphony.

Check out our other guides to the best telescopes, binoculars, cameras, star projectors, drones, lego and much more.

The Fujinon Techno-Stabi 1640 binoculars were the first image-stabilized (IS) binoculars I got my hands on and they are, quite literally, showstopping. Handheld stargazing actually became fun for me, instead of just getting annoyed at squiggly lines of light. Regardless of whether you are a seasoned binocular pro or a beginner, when you start upping the magnification, views start amplifying hand shake and make observation impossible. What is the point of spending loads on high quality optics if you can't even get a still picture? I truly believe that when it comes to non-telescope stargazing, image stabilization (IS) is one of the best things you can spend your money on.

Get the Fujinon Techno-Stabi TS-L 1640 image-stabilized binoculars, on sale right now for $1,125 at Walmart.

I'm not saying that image-stabilized binoculars aren't expensive. They are, but you would realistically never need to buy another pair of high-magnification binoculars again. I recommend the Fujinon Techno-Stabi 1640 binoculars at full price, so getting $275 off them at their lowest price really is a steal. For prices on other binoculars and other optics, check out our Prime Day hub for the best prices during the summer sales events.

• We've got you covered with reviews and rankings of the best telescopes, binoculars, star projectors, cameras, drones, Lego, streaming and more.

The Fujinon Techno-Stabi TS-L 1640 image stabilized binoculars sit near the top of the binocular pyramid alongside the other best image stabilized binoculars thanks to their premium Fuji optics, lightweight build and powerful 3-degree image stabilization (IS). It is some of the strongest IS on the market, only being out ranked by other Fujifilm IS binoculars.

40mm objective lenses aren't the biggest for stargazing, where 50mm is the gold standard for low light, but you can't complain when observing star clusters at 16x magnification with zero shake. Even if you were using 16x50 binoculars without IS, that extra light-gathering ability would be useless when observing overhead without a tripod, the resulting view likely to be a mess of squiggly lights.

My favorite target with these was the Mirfak cluster in the constellation Perseus, which I could actually identify at this magnification thanks to the IS. It's amazing using them without the IS, then switching it on and watching the detail of the night sky emerge. They sit in a higher price bracket than regular models, but they really are some of the best optics you can buy for a heavy binocular user and now with over $250 off their asking price on Walmart, it's a great chance to save money on some exceptional technology. We are going to be seeing a lot of deals on binoculars, telescopes and cameras coming up to Amazon Prime Day. It starts on June 23, so make sure you check our Prime Day hub for all the best offers on skywatching gear and space gifts.

Key features: 16x magnification, 40mm objective lenses,+/- 3 degrees of image stabilization, multicoated extra-low dispersion (ED) glass, roof prism optical desing, 1.9 lbs (856 g) weight, 30-hour battery life.

Product launched: January 2025

Price history: This is the cheapest the Fujinon Techno-Stabi TS-L 1640 binoculars have been since May this year, when they dropped to 1150 on Amazon. This Walmart price currently beats Amazon's asking price.

Price comparison: Walmart: $1,125 | Amazon: $1,199 | Best Buy: $1,199

Reviews consensus: I rated the Fujinon Techno-Stabi TS-L 1640 binoculars four and half stars for their smooth image stabilization (IS) and lightweight design. Other reviews remark on the high price but argue that it is justified through the exceptional performance of these binoculars, with the difference made by IS like night and day.

Space: ★★★★½

Featured in guides: Best binoculars, best image-stabilized binoculars

✅ Buy them if: You want stock-still images of the night sky while using handheld binoculars.

❌ Don't buy them if: You want high definition images of deep-sky objects, whilst they can get you better views of them, a special deep space telescope or smart telescope will get you more detailed views of galaxies, star clusters and nebulas.

Check out our other guides to the best telescopes, binoculars, cameras, star projectors, drones, lego and much more.

Keeping binoculars steady for astronomy or wildlife spotting is one of the biggest barriers to accurate observations. But the best image stabilized binoculars combat this problem by reducing shake without the use of a tripod.

As binocular magnification increases, shake from handholding binoculars becomes worse. This is especially true if you have a strength or mobility condition or have developed tremors in your arms or hands. Miraculously, the same optical stabilization that exists in cameras and camera lenses also now appears in binoculars.

Depending on the model and brand, image stabilized binoculars aren’t as expensive as you might assume, with some being budget-friendly enough to appeal to beginners. Though for those with the budget looking to invest or for veteran astronomers and birdwatchers, there is a range of binoculars and some of the middling to premium models have truly blown us away during testing.

Our expert panel has tested image stabilized binoculars over long periods, testing them for their durability, optical characteristics and usability, including how good their stabilization is in a variety of real-world conditions. It’s not just image-stabilized binoculars we’ve tested either, with a range of non-stabilized binoculars on our best binoculars guide. However, binoculars aren’t the only way to observe the universe! We have also tested the best telescopes and the best cameras for astrophotography too!

The best image stabilized binoculars we recommend in 2026

The best image-stabilized binocular overall

We first tested the Canon 10x42L IS WP binoculars back in November 2022 but we also tested them again in the summer of 2025. We maintained our stance that they are the best image-stabilized binoculars you can buy. Ideal for hand-held astronomy, they offer exceptional features for enthusiasts. A key highlight is Canon's Optical Image Stabilization (IS) technology. This advanced system utilizes gyroscope motion sensors to detect movements of the user's hands and employs a vari-angle prism to correct these deviations by as much as 0.8 degrees. By simply pressing a button, users can effectively eliminate the shake often caused by hand movements, resulting in a steady and clear image. This functionality is especially beneficial during extended viewing sessions, where arm fatigue can be a concern.

We were thoroughly impressed by the Canon WP. They have really clear, high-quality glass, and we found very little chromatic aberration, which is essential whilst stargazing.

While not entirely unique to Canon, the Image Stabilization (IS) system featured here is relatively rare in the binocular world. This limited usage can be attributed in part to its high price tag. However, those fortunate enough to experience this sophisticated electronic system — which combines advanced motion sensors with a distinctive ‘vari-angle prism’ — tend to agree that the investment is well worth it. The enhanced clarity and stability it provides can significantly elevate the binocular experience, making it a coveted feature among enthusiasts and professionals alike.

• Read our full Canon 10x42 L IS WP review.

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The best mid-range

The primary feature of the Canon 12x36 IS III is its integral image stabilization (IS) system, which is engaged via a single button press. Unlike some competing models that allow for toggle functionality—activating IS with one press and deactivating it with another—this model requires continuous pressure on the button to maintain stabilization. A green indicator lamp confirms that the system is operational. While this design choice might seem inconvenient for prolonged use, a light press suffices, and most users will likely engage the stabilization for short durations. Ultimately, the performance of the IS system is commendable, effectively mitigating shake and enhancing viewing stability.

The Porro II prism design seems a lot leaner than traditional porro models and this keeps them relatively light for a binocular of this class. We also felt that they had a durable rubber build that should be able to handle a few knocks and bumps during field use. Although designed mostly with wildlife observation in mind, they do surprisingly well for small stargazing subjects for 36mm objective lenses.

In our testing, we used them to identify stars in constellations and get better views of the Orion nebula (M42). This was all thanks to solid image stabilization, which kept the images of stars still for better observation and identification. Another feature that enhanced observation was recessed objective lenses and super-spectra coating, which helped to reduce flare and ghosting. The eye cups are made of flexible rubber and can only be set in a flap-up or flap-down position, which may annoy some eyeglass wearers, so be aware if you like to adjust the eye-relief a lot.

The placing of the IS button next to focus wheel means it is an intuitive build that makes it easy to adjust focus while keeping the image stabilization activated. Some users may find it annoying that they have to keep their finger pressed on the IS button for active use, but didn't find it an obstruction to observation. There is no lock on the diopter ring, which is disappointing for a model costing $800 but we do think that the overall build of the Canon 12x36 IS III is impressive.

• Read our full Canon 12x36 IS III binoculars review.

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Best for magnification

High-power image-stabilizing binoculars are really suited to astronomical observation, yet the majority of high-powered IS models are inadequately configured in terms of objective lens size for this purpose. Canon's answers to this problem are their 15x50 and 18x50 models, which stand out as the only stabilized binoculars that feature objective lenses sized for astronomical work. They achieve a balance of magnification and light transmission that makes them good for stargazing. The only alternative in this niche remains the Zeiss 20x60 binoculars, which, despite their impressive specifications, come at an exorbitant price point and lack the modern optical technology found in contemporary stabilized models. Thus, users dedicated to astronomical observation are left with limited, yet critical options when it comes to high-power image stabilization paired with optimal objective sizes.

The Canon 18x50 IS UD binoculars have fantastic optics with a porro prism design, 18x magnification and 50mm objective lenses. This is great for astronomy performance as the strong magnification makes it easier to see deep sky objects and 50mm objective lenses can drink in plenty of light. Despite having all-weather in the name, they are unfortunately not waterproof or fogproof, so if you deal with a lot of inclement weather, we wouldn't advise this pair.

The binoculars include ultra-low dispersion lens elements and Super Spectra coating, which delivers strong images without any color fringing. A strong 60.3-degree apparent field of view meant that we had observations that didn't feel blocked or restricted either.

The Canon 18x50 IS UD has a bunch of features that make it ideal for astronomy use. The rubber eyecups block out urban light during city stargazing to keep your observations distraction-free, although they have limited adjustments for people who prefer more customisability with eye relief. A single press of the image stabilization (IS) keeps the system engaged so that you don't have to keep the button pressed during stargazing sessions, where you want to focus on identifying night sky objects. A green LED lamp shows when the IS is engaged so that you can tell if you have left it on to be aware of battery use.

• Read our full Canon 18x50 IS UD all-weather binoculars review.

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The best compact option

The Nikon Stabilized 12x25 binoculars feature as our best compact model because they have a small but fairly heavy size, which lends itself to both stabilized and unstabilized use. The dimensions render them smaller and less bulky than their nearest Canon competitor. Their small size doesn't mean a small price tag, though, and at around the $700 mark, they are firmly in the top tier of pricing for their magnification and objective lens sizes.

The innovative technology integrated into these binoculars utilizes sophisticated internal sensors specifically designed to detect even the slightest vibrations and disturbances. Once vibrations are detected, the system intelligently recalibrates the positioning of the lens elements in real-time, effectively counteracting the effects of movement. This advanced stabilization mechanism ensures that the viewer experiences a remarkably smooth and stable image, allowing for clear and detailed observation even in dynamic or challenging conditions. Whether observing wildlife, stargazing or attending outdoor events, users can rely on this technology to enhance their viewing experience by significantly reducing blurriness caused by unintended movement.

With a suggested battery life of 12 hours, these binoculars are a firm contender in the compact area of IS-equipped binoculars.

• Read our full Nikon 12x25 S binoculars review.

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Best for image-stabilization

Fujifilm's Fujinon Techno-Stabi TS-L 1640s are a great pair of image-stabilized binoculars with strong optical performance, strong magnification and the strongest image-stabilization in this guide. They are a perfectly balanced pair that make them powerful astronomy binoculars as well as a great option for nature-watching or terrestrial observation.

The grey, modern design of the binoculars keeps them in line stylistically with the X-series of Fujifilm cameras and they are really lightweight, thanks to a roof prism design. The image stabilization (IS) is intuitive with a dial in the middle of the ribbed plastic housing to engage it during or before observation. The huge three-degree stabilization angle makes for some of the smoothest handheld stargazing sessions, allowing for better detail in observations.

Extra-low dispersion (ED) glass keeps chromatic aberration under control and phase-correction lens coatings work to produce a sharper image. 40mm objective lenses aren't the best size for astronomy use but the strong image-stabilization (IS) more than makes up for it. We were able to get sharp and detailed views of the Pleiades star cluster, the star Aldebaran in Taurus and the Alpha Persei cluster in Perseus.

The TS-L 1640s have a quoted battery of 30 hours of continuous use and they never gave up on our demanding stargazing sessions. The battery compartment has a latch that folds up to unscrew it when the battery needs changing but otherwise keeps it flat and out of the way during observation. A green LED lights up when the image stabilization (IS) is activated so that you don't leave it on by accident and waste battery.

These are a great pair for extended outdoor use with a strong IPX7 waterproof rating, meaning they can withstand submersion up to a depth of one meter for up to 30 minutes. Combine this with the extended battery life and three-degree correction angle and you have a seriously rugged pair that would work for naval use as well as during intense weather conditions.

• Read our full Fujifilm Fujinon Techno-Stabi TS-L 1640 review.

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Best value for money

The Canon 10x20 IS binoculars are super compact and lightweight, weighing only 10g more than the 8x20 versions. They also have hidden strap attachments underneath the neckline of the eyepieces and sitting flush with the body. The hard plastic casing felt great in hand during testing but also meant that they slid when balancing on surfaces that weren't totally flat. We would advise keeping them on a neckstrap during your sessions to avoid dropping them and scratching lenses.

They may seem unsuitable for astronomy due to the 20mm objective lenses but we would say that they are actually good for stargazing thanks to the added image stabilization (IS). We were able to observe some dimmer constellations and even nebulas thanks to that extra steadiness from the IS, combined with the mid range 10x magnification. There is some chromatic aberration present around brighter objects like Vega and Jupiter, but at this price point, it can be excused.

The best part of the Canon 10x20 IS binoculars are the combination of the small size and the image-stabilization. This makes them incredibly portable whilst still allowing for steady stargazing on the go. Add to this a very smooth focus wheel and you have a great small pair of IS binoculars that you can take almost anywhere. The caveat is that there is no fogproofing and are only water resistant, meaning they wouldn't do well in harsh wet weather and temperature extremes. There are only two adjustments for eyecups too, so users with eyeglasses should bear this in mind if they are thinking of buying.

• Read our full Canon 10x20 IS binocular review.

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Best for wide-field observation

These are Canon's lightest binoculars with image-stabilization (IS) and look like they should be heavier than they are. This is because they have the bulkier porro prism design which improves views over a potentially more slimline roof prism design. They are good for holding in the hands and feel just right. The strap holders are just below the eyepiece sections which makes them feel more compact than other competitors who have straps down the length of the binoculars. A hard plastic casing with a dotted texture feels solid but we found them slipping on some occasions thanks to the smooth underside so just be wary when placing them down on uneven surfaces.

Whilst 8x magnification and 20mm objective lenses may not seem like great binoculars for stargazing but they did enhance wide-field observations for constellations. Image stabilization (IS) makes up partially for the weaker optical specs and does deliver a good stargazing experience for a model of this class. Some color fringing was evident around brighter objects like Vega and the moon but for the small form factor, we were impressed with its astronomy capability.

The textured focus wheel on the Canon 8x20 IS binoculars makes it easy for focusing with one hand and during wetter weather but don't expect it to work in harsh conditions as it lacks any waterproofing and nitrogen purging. Although, if using in normal conditions, these binoculars are a handy small pair that have easy-to-use image stabilization (IS) which even disengages after five minutes of use to prevent accidentally leaving it on for too long. The small CR123 battery is small and works to reduce the overall weight of the model when in use but do remember to take spares on longer trips as they are not as easy to find in stores as AA or AAA batteries.

• Read our full Canon 8x20 IS binoculars review.

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Image stabilized binoculars frequently asked questions

How to choose the best image stabilized binoculars for you

Choosing the best image-stabilized binoculars for yourself depends on your budget and your use case.

If you only need them for wide-field observing of constellations and the moon, then you will only need a pair with a smaller magnification level, around 8x or 10x. For up-close observation of the lunar surface or fainter deep space objects, you will need a pair with stronger magnification above 12x. If you are buying purely for astronomy, you will want a pair with at least 40mm objective lenses as bigger lenses will let more light in.

Obviously, the higher the magnification, the higher the price. Budget models are usually limited to low magnification and small objective lenses, whereas more premium models can offer high magnifications, bigger objective lenses and serious waterproofing for tricky weather.

How we tested the best image stabilized binoculars

Our expert reviewers tested the image-stabilized binoculars in this guide over a period of at least two weeks and used them for a range of observation subjects.

We used them in locations ranging from Bortle class 3-6 for stargazing, with nights ranging from clear skies to some light cloud, which partially obstructed viewing. During our testing we have observed the stars Aldeberan and Vega, the planet Jupiter, the Alpha Persei and Pleiades clusters, as well as the Orion nebula (M42). We also used them for terrestrial observations during the day, such as birdwatching, which helped track them as they flew or moved.

Lower power models such as Canon 8x20 IS were good for brighter objects like Jupiter and Vega, along with wider-field observations of constellations and the moon. Higher power models like the Fujifilm Fujiinon Techno-Stabi TS-L 1640 were good for observing deep space objects like star clusters, galaxies and nebulas.

During observation, we tested for optical clarity to see if there was any chromatic or coma aberrations that would lead to color fringing and inaccurate observations. Alongside optical clarity we were testing the power of the image-stabilization (IS) system, which is stronger in some models. We tested for this during our stargazing session by switching quickly between subjects and rating the clarity of the view when the IS is enabled.

We are also looking at how user-friendly and functional the design of the IS binocular is. We take them out with us for field use and see whether they are portable for travel use, as well as rating how they handle during observation in wet weather.

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Binoculars are an amazing tool for stargazing, and they are especially useful for beginners, as they often don’t need as much astronomy knowledge as you would need for operating a telescope. They do require a steady hand, though, for detailed views, and this can be a problem for many stargazers using them. Normally, the only way to counteract this would be to use a binocular tripod or have the world’s stillest hands. Cue image-stabilized binoculars.

Image stabilization (IS) makes stargazing with binoculars a smooth, shake-free experience. Whilst observation wobbles are more commonly associated with higher magnifications, IS is a useful feature for binoculars of any magnification. Lower magnification models like the Canon 10x42 IS WP L are good for starhopping across constellations and getting a wide view of star fields. Higher magnification models, such as the Fujifilm TS-L 1640 and Canon 18x50 IS are better for getting steady close-up views of star clusters and galaxies.

Our favorite models

We have tested a range of image stabilized (IS) binoculars from the big optics companies and we rate them highly, often giving four or five-star ratings in our expert reviews.

Canon has a huge range of IS binoculars and they cater to a wide range of needs with magnifications ranging from 8x to 18x. We tested out their 10x42L IS WP binoculars and gave them a huge five stars for their bright and colorful images, delivered by lens coatings and advanced optical elements. They offer an image correction angle of 0.8 degrees, and whilst this can counteract small movements, it can struggle with excessive wobbling and shaking.

On the matter of image-stabilization angle, Fujifilm has blown most of the competition out of the water. Depending on the model, they offer a huge three or six-degree correction angle and can counteract stronger movements. We tested the TS-L 1640 binoculars for observing star clusters and think they delivered the smoothest handheld observation we have seen. Their three-degree correction angle meant panning and tilting were shake-free, and at a magnification of 16x, we were able to see night sky objects up close and in steady detail.

Nikon offer a more compact answer to image-stabilized binoculars with their Stabilized 12x25 S binoculars. We gave them five stars in our review and thought they were an amazing compact addition to the image-stabilized binoculars market. We observed constellations and asterisms with them, and they provided much more detailed views than naked-eye viewing. They also come at a hugely affordable price point, on sale for just under $700 at the time of writing.

Benefits of using image stabilized binoculars

Image stabilization (IS) makes for an amazing stargazing experience with your binoculars, and it is hard to go back to using non-IS binoculars after trying a pair. Where wobbles would start to make high magnification binoculars unusable without a tripod, IS makes these magnifications entirely usable with handheld observations. This is very useful for stargazers without telescopes who want to observe deep space objects that require powerful magnification, like star clusters, nebulas and galaxies.

They are also a great option for people who travel a lot to go stargazing, as they are much lighter than carrying a telescope and a tripod around. It makes stargazing much more accessible and easy because all you need to do is grab your image-stabilized binoculars to have steady views of the night sky.

Things to consider before buying image stabilized binoculars

If you want a pair of image-stabilized (IS) binoculars, we would advise considering a few things first. It goes without saying that binoculars with IS are much more expensive than their non-IS counterparts of the same magnification and objective lens diameter. And whilst IS models are lighter and smaller than a full telescope set-up, the addition of batteries and the stabilization system can make these models heavier than regular binoculars.

You should also think about what you would use the binoculars for. If you were serious about deep-space observation, a telescope would be worthwhile, as they can gather much more light and can be used for detailed astrophotography with astrocams. If you travel a lot and are serious about stargazing, or even wildlife observation, IS binoculars would be a worthwhile investment. If you rarely use binoculars or don’t travel a lot, then it might not be worth forking out the extra for image stabilization.

Some models with stronger image stabilization are actually geared towards serious marine use, and you might not even need that much stabilization if you rarely set foot on a boat or unstable surface. High-end models can reach prices between $1500 and $2000, depending on the specs, so if you are a casual binoculars user, your money might be better spent elsewhere, like on a telescope or camera.

Verdict

If you have the budget for it and are an avid binocular user, we would recommend image-stabilized (IS) binoculars for one of the best observation experiences available. What used to be shaky stars become slow and detailed views of objects in the night sky. They are also great for wildlife observation and bird watching, with the image stabilization allowing easier tracking of moving subjects.

They do come at a serious premium though when compared to regular binoculars or even telescopes. For the same money or less, you could get Unistellar’s smart Envision binoculars with AR overlay or even a budget smart telescope like the ZWO Seestar S50 or S30. Careful consideration is needed when putting down this amount of money on optics, but if you are in the market for a binoculars upgrade or really need the sturdiest views of the stars, IS binoculars won’t let you down.

Today's world is filled with "smart" devices and binoculars are no exception. The Kenko VC Smart Cellarto 10x30 WP binoculars stand out for their onboard vibration correction (image stabilization) — a function conveniently powered by a single AA battery. This inevitably pushes up the price but, thankfully, doesn't add too much weight or bulk. The "WP" in the name further indicates that these binoculars are waterproof, making them even better suited to outdoor use and clear, cold nights for stargazing.

Those are the claims but how do these binoculars pan out in practice, and how useful are the smart features for skywatching and wildlife spotting? Will they make it into our best binoculars guide? We put them to the test to find out.

Kenko VC Smart Cellarto 10x30 WP binoculars review

Kenko VC Smart Cellarto 10x30 WP: Design

★★★★

• Ridged focus ring that's ergonomically placed between lenses
• Manually adjustable interpupillary distance
• Included protective rubber caps (for the eyepieces only)

With an attractively futuristic look, the Kenko VC Smart Cellarto 10x30 WP binoculars are commendably compact for a device that features built-in vibration correction. That mechanism typically makes binoculars noticeably bulkier and heavier than a standard pair. However, that's not the case for the Kenko VC Smart Cellarto 10x30 WP binoculars, which are made of polycarbonate resin, a type of plastic known for its strength and impact resistance.

As a further aid to visibility, the lenses are multicoated to maximize light transmission and contrast while reducing flare. Another plus is that the interpupillary distance between the eyepieces can be manually adjusted to comfortably match the user's eyes.

The binoculars come with a pouch and a strap, but I could squeeze them into a winter jacket pocket. Predictably, the quality of these extras doesn't match that of the binoculars themselves, but they are useful nonetheless. Protective rubber cups are provided for the eyepieces, but you don't get any caps to cover the lens glass on the front.

Overall, the design and construction are of a high standard, typical of Japanese manufacturing. The materials, the positioning of the controls and their ergonomic implementation are top-notch. The centrally located and ridged focus wheel had just the right amount of give to enable me to make precise adjustments without needing to take my eyes away from the subject. A top-mounted lever allows the vibration correction to be powered up or down with the flick of a thumb. Again, this switch is large and obvious enough that I could feel for it without needing to remove my eyes from the eyepieces.

What you don't get is a screw thread for the binoculars to be tripod-mounted for extended periods of observation. Because the Kenko VC Smart Cellarto 10x30 WP binoculars are all about onboard image stabilization to enable rock-steady use, it's understandable that the manufacturer would omit that feature.

Kenko VC Smart Cellarto 10x30 WP: Performance

★★★★★

• Sharp and bright views
• 10x magnification
• Onboard vibration correction

The built-in vibration correction on the Kenko VC Smart Cellarto 10x30 WP binoculars has a couple of operational modes, although the feature is fully automated. It detects and corrects "fine vibrations," such as minor hand tremble, as well as compensates for more pronounced movements, or "large vibrations," such as quick panning, switching modes as appropriate. When I used the Kenko VC Smart Cellarto 10x30 WP binoculars to view the moon at the maximum 10x magnification, I could clearly identify large craters, such as Copernicus and Tycho, and radiating surface scars.

However, these binoculars' image stabilization was particularly useful for stargazing. When I used them handheld, without the vibration correction activated, at night, I initially got streaky light trails, and the stars appeared to dance. This effect was amplified by any slight movement of my hands.

However, with a flick of the image stabilization switch, the shaky trails of light suddenly snapped back into pinpoint focus, and readily identifiable asterisms, such as the Big Dipper, became clear.

As noted earlier, the inclusion of image stabilization allowed Kenko to omit a screw thread for tripod mounting — a feature that tends to be found on most premium binoculars. Therefore, I'm very pleased that the vibration correction works so smoothly.

Another plus is that a single AA battery, inserted into a screw-top compartment alongside the lens, can deliver up to 28 hours of continuous use. For comparison, anti-shake-equipped alternatives, such as the Canon 12x36 IS III and the Nikon 10x25 and Nikon 12x25 stabilized binoculars, typically manage eight to 12 hours at best.

There's no automatic power-off feature, which enables uninterrupted use of the vibration correction for stargazing, tracking wildlife and watching sports, concerts and other events.

The Kenko VC Smart Cellarto 10x30 WP binoculars excel at providing sharp and clear views free of typical artifacts, such as chromatic aberration between areas of high contrast, in both daytime and nighttime use. In fact, the crisply defined, high-contrast images have an almost three-dimensional quality. Yes, you'll pay more for these binoculars than for a standard 10x30 pair, but I think the clear views are worth it, particularly for skywatching enthusiasts.

Kenko VC Smart Cellarto 10x30 WP: Functionality

★★★★

• Multicoated optics that boost contrast and light transmission
• Two-tier vibration correction
• Minimal chromatic aberration

The Kenko VC Smart Cellarto 10x30 WP binoculars also benefit from an anti-fog feature, which helps maintain image clarity on cold, damp nights. Plus, the binoculars are waterproof for use in inclement weather, which provides peace of mind when you're making such a large investment.

The light-shielding slide shutter is another handy, practical feature for using the binoculars at night with the vibration correction activated. It can be slid across to obscure the tiny pilot lamp that otherwise glows green when the power is on and the image stabilization is active, thereby eliminating what would have been a distracting light in the dark.

The combination of a standard 10x magnification with a 30mm objective lens is a decent specification, with a lens of that size allowing for continued observation even in low light. However, I would have liked to see a slightly higher magnification to really zero in on detail for lunar observation. The counterargument is that this would have added to the overall weight and bulk.

As always, there are trade-offs to be made to balance portability, performance and price. But the Kenko VC Smart Cellarto 10x30 WP binoculars function well and are some of the most intuitive stabilized binoculars I've handled.

How we tested the Kenko VC Smart Cellarto 10x30 WP

I tested the Kenko VC Smart Cellarto 10x30 WP binoculars during the day, in both bright sunlight and low light, and at night with a full moon and a cloudless view of the sky, and they proved to be a versatile viewing companion.

I tried observing skittish wildlife during the day and the stars and moon at night, with the vibration correction on and off to view the difference it made and thus determine whether it's worth paying a premium for this feature. In my opinion, it did make a clear difference and is indeed worth the investment.

User reviews of the Kenko VC Smart Cellarto 10x30 WP binoculars

Users say the Kenko VC Smart Cellarto 10x30 WP binoculars are perfect for outdoor use and for hobbies such as bird-watching or skywatching. Users agree that the quality is amazing and the image quality is exceedingly sharp, even without the image stabilization switched on.

Should you buy the Kenko VC Smart Cellarto 10x30 WP?

The Kenko VC Smart Cellarto 10x30 WP offered me sharp views whether that was of the moon and stars or wildlife. The built-in vibration correction performed outstandingly, helping to create a great stargazing experience. Although the image stabilization boosts the price of these binoculars, I think it's worth it, especially for viewing the night sky and avoiding streaky star trails. Even though there's no tripod mount, this isn't something you'll miss on these binoculars due to the high-performing image stabilization. Although there was no off button for the image stabilization, with 28 hours of battery life, I don't think this is an issue, unlike on other pairs of image stabilized binoculars where the battery life is much shorter. While I enjoyed using the Kenko VC Smart Cellarto 10x30 WP, the 10x magnification doesn't allow for extreme close-ups which might disappoint some users.

If the Kenko VC Smart Cellarto 10x30 WP binoculars aren't for you

If the Kenko VC Smart Cellarto 10x30 WP binoculars aren't for you, be aware that over the past 10 to 15 years, Canon has faced little competition for image-stabilized binoculars, allowing the company to charge a premium for its products. However, that is changing. Although the recent Canon 12x36 IS III is worth considering, Canon now has competition from rivals such as Fujifilm's waterproofed Techno-Stabi binoculars (I recommend the TS 16x28 WP option) and Nikon's 10x25 and 12x25 Stabilized duo. That could result in more competitive pricing in this market segment.

However, the Kenko VC Smart Cellarto 10x30 WP binoculars sit in the middle of the current options and accrue plenty of praise for their competitive price and impressively sharp image quality. They're a solid choice if 10x magnification is sufficient for your skywatching needs.

Even compared with other premium binoculars, the Swarovski Optik AX Visio 10x32 binoculars stand out thanks to their smart technology — the manufacturer calls the AX Visio 10x32 the world's first Artificially Intelligent-enabled smart binoculars. 'Smart' here doesn't mean built-in image stabilization. Instead, it refers to users' ability to identify birds and animals in the wild, with the specifics relayed via an eyepiece display. While doing this, users can also snap photos with the device. Because there's no removable media slot, you must pair your smartphone via Bluetooth to transfer pictures to your phone and share them.

The Swarovski Optik AX Visio 10x32 binoculars are also excellent for stargazing, because when they're operating fully in analog mode, they function as very impressive, high-quality binoculars. Although astronomy enthusiasts may prefer a higher magnification, the 10x reach and the large, bright lens are suitable for examining craters and scars on the moon's surface and for identifying star formations.

That said, you're paying a premium for the AI technology, so if you're just looking for optically excellent binoculars, it may be sensible to look elsewhere.

Swarovski Optik AX Visio 10x32 binoculars review

Swarovski Optik AX Visio 10x32: Design

★★★★

• Rubberized focus ring ergonomically placed at the fingertips
• Adjustable interpupillary distance
• Protective rubber caps

The bulbous, chunky design feels like a way to disguise the onboard tech, although it works well for those with larger fingers. Swarovski is so proud of its curvaceous looks and distinctive rubber lens rims that it credits designer Marc Newson on the base of the device while also stating it's made in Austria, rather than farmed out to China. Getting an influential industrial designer to craft binoculars further signals the manufacturer's ambition.

At 2.4 pounds (1.1 kg), the Swarovski Optik AX Visio 10x32 binoculars are rather heavy, although not distractingly so. That's before the cylindrical rechargeable battery has been inserted beneath a hatch at the base.

To get everything ready for action, a charger and USB cable are provided in the box, along with a user manual, lens cloth, soap and a brush, but you need to provide your own USB cable. Another metal cylinder sits between the eyepieces and lens barrels. This is functional too, rather than just an aesthetic choice. It houses a camera on the front and a chunky mode-selection dial on the back.

The twist-up eyecups allow for adjustment and the avoidance of light bleed, regardless of whether you're wearing glasses. For added comfort, there is a slightly stiff folding mechanism at the center that allows you to adjust the interpupillary distance between the eyepieces to match your eyes. A less-common addition is a dioptric adjustment wheel on each eyepiece rather than on just one. This enables further precise adjustments, for example, if one eye is weaker or stronger than the other.

Ultimately, we're aiming to see a single, large, bright circle that maintains sharpness edge to edge. Given that Swarovski is noted for its optical expertise and lens construction, our hopes here are as high as the AX Visio's price tag. A stiff rubber eyepiece protector can be threaded through the comfortably thick and padded neck/shoulder strap so it doesn't get lost when not in use. The design and implementation convey that this is a luxury item.

There are three operational buttons atop the device, but they can have more than one function depending on which mode you're using. For example, the circular button that you press to identify wildlife doubles as a shutter release button in camera mode. The second button, marked with an arrow, is for tabbing between selectable options, while the third is the power button.

Overall, the Swarovski Optik AX Visio 10x32 binoculars feel solid when gripped, with the top plate buttons and focus wheel readily accessible to our fingertips. With our eyes locked on our subject, it was easy to press the wrong operational button, as the three controls are very close together. However, this is a minor gripe that sorts itself out with increased familiarity.

Swarovski Optik AX Visio 10x32: Performance

★★★★★

• Bright, clear and sharp views from the 32 mm objective lens
• 10x magnification
• Onboard ability to identify up to 9,000 birds and wildlife

Although these binoculars were not explicitly made for skywatching or astronomy, the 10x magnification is as useful for lunar observation and stargazing as any other binoculars with class-leading optics.

As with the Kenko VcSmart 10x30 binoculars we recently tested, we could zoom in to identify details on the moon. For example, we saw the Copernicus and Tycho craters and noticed the visible streaks made by meteorite impacts, as well as gray areas, such as the Sea of Tranquility. We also got closer to constellations that were already visible with the naked eye, such as Ursa Major (the Great Bear).

When we looked through the eyepieces and used the Swarovski Optik AX Visio 10x32 as we would any other high-end, fully analog binoculars, we were mightily impressed by the razor-sharp clarity and brightness, thanks to a large and clear 32mm objective lens. The viewed image, especially during daytime use, was as lifelike and three-dimensional as we could hope for; we could examine fine detail, without any noticeable falloff in sharpness or visual aberrations. Swarovski is noted for its excellent optics, and the results signal that paying top dollar is justified for the best results. A quality padded neck/shoulder strap aided comfort and helped us hold the binoculars level and steady.

Swarovski is not merely providing top-notch glass but also cutting-edge tech. To identify birds and other wildlife, we simply turned the selection mode wheel on the back of the binoculars to the corresponding graphical setting, and a different digital overlay appeared within the eyepieces. For example, selecting the bird icon enabled Merlin Bird ID support for identifying the bird we were observing.

The less immediately obvious symbols on the same selection wheel include access to a compass, plus a pair of customizable settings denoted by star symbols. These can provide shortcuts to optional apps or, if you really want to expand the potential usability, a connection with an external third-party app. We reckon most users will feel there is already enough to experiment with, however.

The Swarovski Optik AX Visio 10x32 binoculars are essentially a three-in-one device: very high-quality (albeit standard) 10x magnification binoculars, software that can identify up to 9,000 birds and wildlife species, and a built-in camera to photograph it.

Alternatively, you could buy a flagship mirrorless camera and a premium lens for the same price. You could also spend far less on binoculars with premium optics, similar magnification and the same objective lens size that are still top-notch for stargazing but lack the wildlife-identifying tech. When you're deciding whether to purchase these binoculars, you really have to consider whether the Swarovski Optik AX Visio 10x32, as a complete package, will be useful to you.

After you've selected the desired identification mode, you must center the provided circle or frame shown within the eyepiece over the wildlife you wish to identify. It's better to have the binoculars powered up and ready to go before you attempt to identify a subject, because you need to hold down the power button for a couple of seconds before it activates and then wait a few more seconds while an LED lamp flashes and then stops flashing. By the time you do all of that, a rare bird may have flown off. It's a bit like booting up a desktop computer.

To do more, you must download the Swarovski Optik Outdoor App. This allows you to pair your smartphone with the binoculars to transfer images for saving or sharing. The promise is that future device updates will be carried out via the app, with Swarovski envisioning a product life cycle of many years.

In addition, an onboard "Share Discoveries" feature allows users to note markers in the eyepiece display to guide another person to an observed subject of interest if they hand over the device.

But again, you don't have to get caught up in these fancy features to enjoy using the binoculars. They deliver stunningly clear results even when used as "regular" fully analog binoculars, and even when the myriad features are inactive, the Swarovski Optik AX Visio 10x32 will still benefit stargazers.

Swarovski Optik AX Visio 10x32: Functionality

★★★★

• A promised 88% light transmission
• 13-megapixel camera
• Two- to 15-hour battery life

Thanks to the Swarovski Optik AX Visio 10x32's weight and solid construction, including a rubberized surface, the binoculars were stable when used handheld. Any hand tremors or wobbles were kept under control by the sheer heft of the device. There is no screw thread for a direct tripod connection anyway.

The binoculars can be used in temperatures ranging from minus 14 to over 122 degrees Fahrenheit (minus 10 to 50 degrees Celsius). On cloudless, cold nights perfect for stargazing — particularly if you're lucky enough to be out in the desert, far away from streetlights — the ability to function in such extremes could prove useful.

Once everything is up and running, the Swarovski Optik AX Visio 10x32 binoculars are both fun and informative. In our tests, they managed to correctly identify various wildfowl even with their backs to us or when they were partly obscured by vegetation. For the greatest accuracy, we found that we needed to get the bird's whole body into the frame to avoid getting an error message. It would be fantastic if future updates could also broaden the binoculars' functionality to include spotting guides for astronomy rather than just wildlife watching.

It's a shame, because the amateur observers who would be best served by these binoculars may pass on them because of both the price and the degree of familiarity required.

The Swarovski Optik AX Visio 10x32 binoculars feel like a first-generation, highly considered and well-engineered stab at something we'll see a lot of in the future as AI continues to permeate our lives and gadgets. Early adopters of this device are paying a premium for the privilege.

A nagging question we weren't quite able to shake is, exactly whom is this product made for? Anyone who's considering spending big money on a high-quality optical device for wildlife observation would conceivably already be an expert in identifying subjects. Stargazers would be paying extra for features they may not want or need. And those who just want well-made, impressively sharp binoculars without all the tech on board may be better served by a different device so they're not paying for features they don't need.

How we tested the Swarovski Optik AX Visio 10x32

We tested the Swarovski Optik AX Visio 10x32 binoculars outdoors in both full sun and overcast conditions, as well as near sunset. We also used these binoculars for stargazing at night and viewing the lunar surface, along with readily identifiable constellations, such as Ursa Minor (the Little Dipper) — in both light drizzle and fully dry conditions.

Given these binoculars' wildlife-identifying capabilities, we also took it to London's largest park, where deer roam freely, as well as to the local pond to aim them at geese, ducks and swans. We were consistently impressed by the clear, class-leading observations delivered by this product, no matter what we were looking at.

User reviews of the Swarovski Optik AX Visio 10x32 binoculars

Users say the Swarovski Optik AX Visio 10x32 binoculars are a flagship product at the cutting edge of innovation, but like us, they questioned who would benefit from this product the most. Some users also found the process of pairing the device with their phone a little fiddly and the supplied instructions less illuminating than they may have liked. Those comments concurred with our own assessment that some patience and familiarization are required to get the most from this product.

Should you buy the Swarovski Optik AX Visio 10x32?

If you don't need the digital bells and whistles and device-pairing capabilities of the Swarovski Optik AX Visio 10x32 binoculars, you can still use them as a very capable high-end analog portable observation tool, even when there's no battery loaded. However, if you don't need the AI-enhanced experience, then it's also worth considering high-end alternatives with similar magnification and objective lens dimensions.

For example, Swarovski also offers the 10x32 NL Pure binoculars, which have the same 10x32 core specification but not all the onboard tech that might prove extraneous to some users.

If the Swarovski Optik AX Visio 10x32 isn't for you

If you're looking for something more affordable, check out the Kenko VcSmart Cellarto 10x30 WP, which is waterproof and offers built-in vibration correction and image stabilization; they're some of the smallest binoculars with this feature. They offer similar core specs as the Swarovski Optik AX Visio 10x32 binoculars at one-sixth the price. When we tested the Kenko VcSmart Cellarto 10x30 WP, we were suitably impressed by the razor-sharp clarity, particularly for skywatching and lunar observation.

If you need a higher basic magnification than the 10x the Swarovski and Kenko examples offer, consider the Canon 12x36 IS III binoculars, which are a less-expensive high-end alternative. These Canon binoculars have a larger and brighter 36 mm objective lens to go with that boosted 12x magnification.

Another option is the compact, futuristic-looking Fujifilm Techno-Stabi TS 16x28 WP binoculars, although these waterproof binoculars' 28 mm objective lenses suggest less effectiveness in lower-light conditions.

Right now, however, the luxuriously high-tech Swarovski Optik AX Visio 10x32 binoculars' innovation and boundary pushing mean they are in a class of their own and an enticing option for those who can afford them.

In the Oct. 21, 2016, edition of Mobile Astronomy, we examined how to use binoculars for astronomy, explained how they work and what to shop for, and suggested some night-sky objects to look at. This time, we'll cover some tips for making binoculars work better for you, highlight a type of binoculars that helps with unsteady hands and share a variety of targets to look for this summer.

Using binoculars for astronomy

Binoculars consist simply of a matched pair of small telescopes precisely mounted together to deliver a stereo image to your two eyes. The lenses at the front are called objectives. As with any optical device, the larger the area of those lenses, the more light they collect and concentrate into your pupils.

The small lenses you look into are called eyepieces or oculars, and they do the job of magnifying what you see. In binocular specification numbers, such as 7 x 50, the second number is the diameter of the objective lenses in millimeters and the "7x" means the binoculars will magnify by seven times. [Best Astronomy Binoculars (Editors' Choice)]

Binoculars are terrific for astronomy because they have a much wider field of view than telescopes, making it far easier to hunt for objects in the sky — plus, binoculars are easy to carry around and require no setup. Binoculars' limited magnification, usually less than 10 times, is more than enough for many classes of astronomical objects. And the light-gathering ability of binoculars raises dim objects, like comets or nebulas, to visibility. Most people find that viewing with two eyes is less straining than single-eyed telescope viewing, too. In fact, many beginner stargazers spend months or years learning the sky with binoculars before graduating to telescopes.

Most binoculars work perfectly well for astronomy. But if you are buying with astronomy in mind, choose a pair that has large objective lenses, but which is still comfortable for you and the kids to hold for extended periods. You can also invest in a bracket for mounting larger binoculars on a tripod. To find binoculars compatible with that setup, check for a mounting-screw receptacle. It might be hidden under a removable cover.

Coated optics are essential for brighter views with high contrast and for avoiding unwanted color fringing on the edges of bright objects. Better binoculars will also allow one ocular to be focused independently, in case the prescriptions in your two eyes differ. If you plan to use your binoculars while wearing glasses, look for models with more than 15mm (0.6 inches) of eye relief (the distance between the ocular lens and your eyes). Due to manufacturing variations, it's always a good idea to try binoculars in the store, so you can be sure they achieve focus and deliver a crisp, blended image.

Most people naturally hold binoculars with their hands relatively close to their faces and within reach of the focusing ring. For better results, though, focus the binoculars, and then move your hands closer to the objective lenses while resting the rubber ocular guards against your face. You'll find that the view will be much steadier. Sitting or leaning against something sturdy are also helpful.

Another surefire way to get steadier views is to use image-stabilized binoculars (ISBs). These have an internal suspension system that reduces the effects of your hands' movements. The electronics operate on installed batteries and have a button that engages the stabilization. Although these binoculars can be pricey, I have tried them, and the difference is amazing! Gary Seronik, the editor of SkyNews magazine, has written an extensive review of the best ISBs for astronomy on his website. 

Summer binocular targets

Here are a variety of objects you can look at using binoculars of any size this summer. Your favorite astronomy sky-charting apps will include these objects. Simply set the app to your observing time and date, and search using the names I've provided. The app will show you where in the sky these objects are, including any nearby "signpost" stars. The better apps, such as SkySafari 5, will also provide a wealth of information about the objects and show you high-resolution color images.

SkySafari 5 allows you to display a circular field-of-view indicator for your binoculars to help you judge how large objects will appear in them and to aid in locating the objects with respect to nearby bright stars. In the Settings menu, select Display. A list of predefined fields of view will appear. You may select one that matches your setup or customize your own. Ensure that the option to "Show even if not connected to telescope" is enabled. Exit the menu, and a blue circle should appear at the center of the display.

The Big Dipper

The Big Dipper is the best-known asterism in the sky. (An asterism is an obvious shape composed of a limited number of, usually, naked-eye stars.) The dipper is only part of the larger, surrounding constellation, Ursa Major (the Big Bear). The SkySafari 5 app allows you to highlight asterisms and their names. In the Settings menu, select Constellations. Scroll down and enable the Show Asterisms and Show Names boxes. Now, the display will overlay the asterisms on the constellations and you can trace them out in your binoculars. 

While you're touring the Big Dipper, look at the star that marks the bend in the handle. This is Mizar. Just above the handle, and close beside Mizar, is a much fainter star named Alcor. Most people can see both stars with unaided eyes. Known as the Horse and Rider to the ancient Arabs, these stars were used for eye tests in that era. Viewed in binoculars, Mizar readily splits into a double star, with one slightly brighter than the other. These two stars are believed to be revolving about one another with a period of 5,000 years.

The Little Dipper is positioned with its smaller bowl pouring into the Big Dipper's bowl and its handle pointed the opposite direction. Other than Polaris at the handle's end and Kochab at the bowl's outer rim, the stars of the Little Dipper are difficult to see under light-polluted skies. With binoculars, however, you will have no trouble seeing all seven stars.

The Summer Triangle and the Coathanger

The Summer Triangle is another asterism. Three bright white stars mark out a large, slim triangle about 34 degrees long (more than three fist diameters at arm's length) and 24 degrees tall. In early summer, the feature dominates the eastern evening sky, with Deneb on the left, Altair to the lower right and Vega high between them. The Milky Way bisects the triangle, so the area is populated with a wealth of star fields, dark dust lanes and nebulas — all splendid viewing in binoculars. Use your astronomy app to zoom in on the area. It contains many Messier list and NGC (New General Catalog) binocular targets. Try to find them by hopping among the prominent stars. 

Next, look for the Coathanger asterism, a small grouping of dim stars located almost exactly halfway between Vega and Altair. The stars combine to form a short, straight bar with a hook (on the Altair side). The entire shape will fit within your binocular field of view. Under very dark skies, you might be able to spot it with naked eyes, too!

The Milky Way to the left of Deneb is also a treasure trove of binocular sights, including the North American nebula, the Messier 39 open star cluster and more. And late-night observers can hunt down the Andromeda galaxy, wide as six full moons and perfect for binoculars! 

Epsilon Lyrae

Epsilon Lyrae is the designation given to a star in the constellation of Lyra (the Lyre), and it poses a fun challenge for amateur skywatchers, even during full-moon periods. The star sits about a finger's width to the lower left of Vega. To the naked eye, it looks like a single star, but if you have even weak binoculars (or very sharp eyesight), you can see that it's a pair of stars. Under more magnification, such as a backyard telescope, each of the two stars divides in two, making it a "double-double," its common nickname.

Messier 13 globular cluster

Hercules contains one of my favorite objects, a globular cluster known as the Great Hercules cluster or Messier 13. This object is a tightly packed ball of about 300,000 ancient stars. At magnitude 5.9, it is visible with unaided eyes under dark skies, appearing as a faint smudge. But binoculars or telescopes reveal more. The cluster is located along the western (right) edge of the keystone-shaped body of Hercules, about one-third of the way from the wide end. 

Midway between Hercules' knees, there is another, smaller globular cluster called Messier 92 that is also readily visible in binoculars. A third, fainter globular cluster designated NGC 6229 is located 6.5 degrees, or a palm's diameter, above Messier 92.

The Great Hercules globular cluster was first observed by British astronomer Edmund Halley in 1714. It is a relatively close object, at 21,500 light-years away from Earth, making it a bright magnitude 5.8, and it covers an area of sky 20 arc-minutes across (two-thirds of the moon's diameter).

The summer southern sky

If you follow the Milky Way downward to the right, beyond the summer triangle, you enter the richest part of the night sky available for mid-northern observers. The Wild Duck cluster, also known as Messier 11, is a large open star cluster with several hundred stars packed into an area of sky equivalent to the apparent diameter of the moon. One of the cluster's early observers coined its name. See if you agree that it resembles a wedge of flying birds.

Another very rich star field in binoculars is the Sagittarius star cloud, or Messier 24. It is close to the center of Earth's Milky Way galaxy. Observers in a dark sky should also try observing the several bright nebulas in the region, particularly the Eagle (Messier 16), Omega (Messier 17), Trifid (Messier 20) and Lagoon (Messier 8) nebulas. 

One can spend hours in a comfortable chair scanning the southern summer sky for open star clusters, globular clusters and nebulas. Switch on your app's night mode to preserve your dark adaptation and use the app to identify the objects you find. Keep a record of what you find!

Going beyond: The first-quarter moons and planets

Don't forget about the moon and planets this summer. While binoculars can't reveal details on Jupiter, you can certainly watch the four Galilean moons dance around the planet, changing their positions from night to night. Jupiter is observable during evenings until September, spending the entire summer apparition in the western sky in Virgo, near that constellation's brightest star, Spica. [Photos: The Galilean Moons of Jupiter]

Saturn will spend the summer of 2017 near the rich star fields of the Milky Way. Look for it low in the southern sky in the evening. Binoculars will reveal a hint of the rings and the planet's largest moon, Titan. Use your app to find out where Titan is while you are observing. And extremely bright Venus will be visible all summer in the eastern, predawn sky.

Despite its eye-catching brilliance, a full moon is a rather dull sight in binoculars, because there are no shadows cast on the surface. But on the evenings, after new moon until first quarter, the moon is a spectacular sight in binoculars and telescopes, because the sun's light is striking the hemisphere facing the Earth at a shallow angle. All along the terminator, the boundary that separates the lit and dark sides from pole to pole, the brilliantly lit crater rims and mountain peaks cast long black shadows. Every evening, the terminator shifts farther to the moon's west (east, for Earth observers), highlighting new vistas. 

As a bonus, the first-quarter moon is always conveniently positioned in the western evening sky. This summer's best evenings to observe the moon are June 26-30, July 25-30 and August 24-29. 

Binoculars are also perfect for looking at earthshine, sometimes referred to as "the new moon in the old moon's arms." It occurs on the first few evenings after new moon, when sunlight reflected off the Earth slightly illuminates the dark portion of the moon above the lit evening crescent.

In future columns, we'll talk about controlling your go-to telescope with your phone, tour southern skies not visible from the Northern Hemisphere, discuss galaxy types and do more. Until next time — keep looking up!

Editor's note: Chris Vaughan is an astronomy public outreach and education specialist, and operator of the historic 1.88-meter David Dunlap Observatory telescope. You can reach him via email, and follow him on Twitter @astrogeoguy, as well as on Facebook and Tumblr.

This article was provided by Simulation Curriculum, the leader in space science curriculum solutions and the makers of the SkySafari app for Android and iOS. Follow SkySafari on Twitter @SkySafariAstro. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.