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Celestron 52268 C90 Mak Spotting scope (Black)
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- 90 mm (3.5") Diameter Maksutov spotting scope. Focal Length:1250mm. Focal Ratio:f/13.9. Near Focus:15 feet (4.6m).
- Multi Coated Optics
- Comes with 32 mm Eyepiece, 45° Erect Image Diagonal and 8x21 Erect Image Finderscope
- Compact and Portable Design
- Built-in T-Adapter threads for Ease of Adapting SLR Cameras
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From the manufacturer
C90 Maksutov-Cassegrain Spotting Scope / Telescope Hybrid
An excellent choice for both terrestrial and astronomical usage.
FEATURES AND BENEFITS
The Maksutov-Cassegrain optical design is recognized for being a portable design that is easy to use and has a variety of applications.
Erect Image Finderscope
Locate your subject quicky with the included 8x21 erect image finderscope.
Uses Astronomy Eyepieces
The C90 accepts a wide range of 1.25” mount eyepieces for even more magnification.
Backpack Case Included
An included backpack case is a convenient way to transport your scope.
FEATURES AND BENEFITS
Built-in T-mount adapter threads allow easy connection of DSLR camera bodies to create a 1250 mm lens.
Versatile Mounting Options
Designed with both a dovetail rail and a ¼-20 threaded mounting port, the C90 mounts easily on both astronomical and camera tripods.
Multiple Accessories Included
Custom backpack case, 32 mm eyepiece, 45° erect image diagonal 8x21 mm erect image finderscope, objective cover, cleaning cloth, and instruction manual all included.
|Magnification||39x (with included eyepiece)||50x (with included eyepiece)||25x-75x||20x-60x|
|Optical Design||Maksutov-Cassegrain||Schmidt-Cassegrain||Maksutov-Cassegrain||Porro Prism|
|Eyepiece||32 mm Plossl||50 mm Plossl||10-30 mm||8-24 mm|
|Field of View (degrees)||1.3°||1.0° (with included eyepiece)||1.3°-0.7°||2.1°-1.0°|
|Field of View (feet @ 1000yds)||67 (with included eyepiece)||52 (with included eyepiece)||68-37 (with included eyepiece)||110-52|
|Lens Coatings||Multi-coated||StarBright XLT||Multi-coated||Fully Multi-coated & XLT|
|Close Focus Distance (feet)||15||20||32||21.3|
|Eye Relief (mm)||20||22||16||20|
|Eyecup||Folding (with included eyepiece)||Folding (with included eyepiece)||Folding (with included eyepiece)||Twist|
|Tripod Mount||Dovetail Rail & ¼-20 threaded||Dovetail Rail & ¼-20 threaded||Fixed; ¼-20 threaded||Rotating; ¼-20 threaded|
|Finderscope||8x21 mm Erect Image||6x30 mm Erect Image||No||No|
Perfect for all Types of Viewing Situations! Celestron's C90 Mak is ideal for outdoor and wildlife observing, as well as hunting and celestial viewing. The Maksutov optical design is recognized for being a portable design that is easy to use and has a variety of applications, making it an excellent choice for both terrestrial and astronomical usage. This C90 Mak has excellent optics with razor sharp images over a wide field.
Celestron’s 52268 90mm Maksutov Spotting Scope delivers excellent high power optics in a compact, affordable package. The 52268 package includes a backpack style soft carrying case, an 8x21 erect image finder scope, a 1.25 inch size correct image 45* prism diagonal, and a fully coated 32mm plossl eyepiece for a magnification of 39X.
The Maksutov-Cassegrain design of the C90 uses a combination of mirrors and lenses; this “folded” optical system has a focal length of 1250mm in a body only twelve inches long. The Maksutov design delivers high power views without a trace of the chromatic aberration, also called blue fringing, that can distort high power views in competing refractor style spotting scopes. At 40X magnification where some low cost spotting scopes start to seem fuzzy, the C90 is just getting started. The C90 uses the same 1.25 inch eyepieces used in astronomical telescopes. The standard equipment 32mm plossl eyepiece yields a magnification of 39X, but many other eyepieces can be used to vary the magnification.
The Celestron model 52268 seems very well built, with excellent multi-coatings visible on the front lens. The real beauty of this 90mm Maksutov spotting scope, however, is in the view it offers. When I use an optional 12.5mm eyepiece to look at Jupiter at 100X I can clearly see Jupiter’s major cloud bands as well as its four moons. When I look at the Moon and stars I can easily push the magnification to 200X with an optional 6mm eyepiece. When I look at birds in the backyard, I’m treated to delightful views full of vibrant color and crisp detail. With a close focus distance of only 15 feet, the detail and texture I see is simply amazing.
High magnification viewing requires a solid tripod, of course. Celestron’s Heavy Duty Altazimuth Tripod comes with slow motion controls to allow the scope to be pointed precisely, and I can clamp the dovetail base on my CG5 mount for astronomical use. The other drawback to high magnification viewing is a narrow field of view; high magnification makes it hard to follow moving targets like birds in flight. Overall the Celestron C90 Maksutov Spotting Scope does a fine job as a companion to good pair of binoculars. The C90 also doubles as a portable astronomy scope; it won’t show the flag on the Moon but it will show thousands of craters on the Moon as well as showing the moons of Jupiter and the rings of Saturn. --Jeff Phillips
- Compact and portable
- Excellent high power optics
- Upgradeable with 1.25” eyepieces
- Adaptable for astronomy and photography
- Not waterproof
Top customer reviews
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As of the date I ordered it, this scope no longer comes with the tripod. The tripod kit & scope is still available at a slightly higher cost and the tripod can also be purchased separately from Celestron. Most of the reviews say the included tripod was barely adequate and they seemed inclined to replace it with a sturdier tripod. For accessories you get the nylon backpack carrying case, a 32mm plossl eyepiece (not bad for an included eyepiece & gives you a 39X view), a 45° erecting diagonal, and finally an 8X21 finderscope. The finderscope can be easily replaced as it uses a semi-standard guide mounted dovetail and can be replaced with Celestron, or Orion products such as the 50mm guide scope and other products as well.
With its long focal length of 1,250mm you WILL need a firm steady heavy tripod for any kind of viewing. A photo tripod, even with the legs unextended may still wobble enough where it will make focusing and using this telescope a serious chore. Making focusing a bigger chore, this telescope also has a narrow depth of field. That is, if you aim at a tree a few miles away, you may see the middle of the tree in focus while the further and closer parts may be blurry. I did mount this on my Celestron CG-5 Computerized German Equatorial Mount 91518 and it worked like a charm on the night sky and became really pleasant to focus and work with once on a firm enough mount. It does appear the interior may not be baffled as well as some other scopes. If you are nearing a bright object like Spica, Saturn etc. you will see a stretched out circle pointing towards the object. This however, does make it easier to find the object you are looking for. Adding an aftermarket dew shield will probably help with this if it bothers you. AstroZap Flexible Dew Shield For Meade ETX 90 and Celestron C-90 Telescopes AZ103
As I mentioned the C90 currently comes with one eyepiece, a 32mm plossl which will yield about 39X. This eyepiece will enable to you to see Saturn's rings when properly aimed and focused. I did use a Explore Scientific 6.7mm eyepiece which yielded about 187X which would be considered the 'upper limit' in magnification for this scope. Even though the night was windy and it was a hazy night this scope did a better job that I expected and it was able to easily view Saturn's rings!
While mounted on firmly on the CG5 (the C90 has a dovetail with two standard 1/4X20 holes for use on photo tripods and three holes drilled for use on standard astronomy mounts) was a dream to focus. I actually found it easier than my Explore Scientific 102mm f/7 Air-Spaced Triplet ED Apochromatic Refractor Telescope and didn't even bother to use my Farpoint FP401 Bahtinov Focus Mask for Telescopes with Dew Shield or Front End Diameter from 3.5" to 6.5" when focusing on stars. This was just as easy to focus with an eyepiece or with a Canon 7d DSLR attached. The C90 comes with threads that will fit a standard T ring, so you do not need to order a T-adapter to use this scope at prime focus. When ordering a ring, make sure you don't order an M42 ring as the thread size is the same but one is a finer thread. They will connect up together but will only go on for one or two threads and if you force it, you will be cross threading and ruining one or both of your devices. Note, the 7D when directly attached to this scope for prime focus photography, the moon will just about fill the entire frame of view on the 7D and other camera's with a similar sensor size.
I will be updating this review once I get a steady alt/az mount for bird watching & terrestrial viewing.
All in all, I am pleasantly surprised with this scope as it has exceeded my expectations!
My C90 sits on a Dolica GX600B200 tripod. I only extend the upper (thickest) legs and sit it to my left as I shoot. The combination of the the C90 and Dolica GX600 makes a solid enough platform.
I used the included soft case to transport it. The Dolica tripod I purchased has it's own soft case. Set up and break down is quick enough. The scope is protected enough in the soft case for rolling around in a car, but I wouldn't do any drop tests on concrete. I don't think there's enough protection for a drop from table height to a concrete surface. If that's a concern, look into a separate hard case. I just plan to be careful.
After searching for a good spotting scope for the range and trying similarly price purpose build 60mm and 80mm scopes, I'm glad I purchased the C90. Field of view is better than others I've tried and the useful magnification you can get on this 90mm scope is better than the fixed 50x or 60x spotting scopes you'll see. I'll be testing at 500 yds over the summer and I expect good results. Will follow up on that as well. If you need something out to 1000 yds, by best guess is this may be ok, but a 120mm Maksutov might be a better choice.