Celestron C90 Mak 3.5 inch Spotting Scope Kit
Celestron Maksutov Cassegrain Spotting Scope Product Overview
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Celestron C90 Mak, 3.5" (90mm) Maksutov-Cassegrain Spotting Scope Kit with Eyepiece, Finderscope & Accessories

SKU: CNC90N MFR: 52268
(9)10 questions, 37 answers
$279.95
$363.95
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Key Features

  • Enjoy bright, clear images with this 90mm Maksutov Spotting Scope, perfect for detailed observations.
  • Multi-coated optics provide excellent light transmission for crisp, high-resolution viewing experiences.
  • Achieve 39x magnification with the included eyepiece, great for birdwatching and nature observation.
  • Capture stunning photos by adapting your camera to this versatile and adaptable spotting scope.
  • Durable and weather-resistant, this spotting scope is designed for reliable outdoor adventures.
  • Lightweight & portable design with included backpack makes this spotting scope ideal for travel.
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Questions & Answers

Scott E : Can this scope be modified for solar viewing?MIKE L : I use mine as a spotting scope. Unfortunately I know very little about astronomy.JULIAN E : Only by adding the proper full-aperture solar filter at the front of the telescope. Do Not use this telescope to project an image of the Sun! It could melt the inner mirrors.SHAILESH B : Yes, you need to use a solar filter and it should work well. Do NOT view the Sun without a proper filter... blackened glass, x-ray films, ND filters, etc are unsafe and can damage your equipment and more importantly your eyes permanently. Always use filters designed for solar work such as those from Baader or Thousand Oaks.RONALD H : The internal workings of the scope cannot be modified, but there are 90 mm white light telescope filters that can be attached to the front if you only want to observe sun spots (or a solar eclipse). They vary from $25 to $125.00 in cost. Check Amazon. For solar detail, Daystar has a hydrogen alpha filter, but it will cost you over $1,195.00. WARNING: This hobby, amateur astronomy, can be habit forming and hazardous to your budget! Good Luck!JAMES W. R : Yes, you need a solar filter that fits over the objective lens. Not the eyepiece.JOHN J : Any scope can be modified, all you need is a solar filter on the FRONT of the scope. Never place a solar filter at the eyepiece, it always must be on the front of the scope. Look around the internet, there are even ways one can make a safe, economical solar filter. Good eclipse viewing!DOUG H : Yes, but only with a full-aperature glass or baader-film solar filter pver the corrector. You cannot use a herschel wedge at the rear.
robert d : how doi get 10% off ?RON C : This has nothing to do with the 10% off, but I returned the telescope because of inferior black reflective paint used to "minimize" internal reflections - this lead to poor contrsst images. Be warned!!REINALDO A : I can not answer anything that celestron C90 was returned to you for damage.
Shopper : Can a Digital SLR be attached for picture taking?MIKE L : Yes, but you have to buy adapters.THOMAS H : The 5" scope has a 1.25" and not a 2" eyepiece opening. You could attach a dslr to a Tring and 1.25" adapter, but I think you will get some vignetting.MIKE M : Yes, you need an adapter for your camera.ROBERT P : For some reason the Adorama system truncated my response. Here is another attempt to respond in full: I have not myself tried to hook up any camera to the spotting scope, but here's what the owner's manual says about that : Attaching a Camera --(1) T-Adapter threads are built into the rear of the spotting scope. With a camera-specific T-Ring, a Digital SLR (or SLR) camera can be attached to the spotting scope. (2) Remove the erect image diagonal and eyepiece from the rear cell of the tube (3) Thread the T-Ring onto the rear opening which contains the threads (T-Adapter) (4) Mount your camera body onto the T-Ring the same as you would for any other lens. NOTE: Since digital cameras (not digital SLR cameras) do not use the T-System to mount cameras to lenses, spotting scopes, telescopes, etc. you need a different way to be able to use them to take photos. Celestron offers a Universal Digital Camera Adapter (Model #93626) which makes it easy to attach most digital cameras to your spotting scope. You will need to check with Adorama or Celestron if that Adapter is available for sale. The C90 is a very fine spotting scope, but for that price, obviously, it cannot be confused with a TeleVue productDANTE P : Yes you can. It comes with a T-mount that you screw a T-ring onto, and you attach your camera to the T-ring. Make sure you buy the T-ring that will attach to your camera where the lens goes. I bought a T-ring for my Nikon D3000 and screwed it into the T-mount and then attached my camera, allowing the spotting scope to become my lens.ROBERT P : I have not myself tried to hook up any camera to the spotting scope, but here's what the owner's manual says about that : > You will need to check with Adorama or Celestron if that Adapter is available for sale. The C90 is a very fine spotting scope, but for that price, obviously, it cannot be confused with a TeleVue product.ALISON M : I have not used a camera on the scope. The instruction manual, at best, is ambiguous. It refers to "SLR cameras" , not mentioning DIGITAL SLR cameras. The next section refers to "Digital Cameras (not digital SLR cameras)" and reads, "Since digital cameras (not digital SLR cameras) do not use the T-system to mount cameras to lenses, spotting scopes, telescopes, etc. you need a different way to be able to use them to take photos. Celestron (and many other companies) offer Universal Digital Camera Adapters which makes it easy to attach a digital camera to your Regal F-ED spotting scope. However, many brands of digital cameras cannot obtain a centered image due to their lenses not being able to reach up to the center of the eyepiece. In this case, you cannot use the Universal Camera Adapter but can only use your camera by holding it behind the eyepiece for taking images." (Does this mean that digital SLR cameras DO use the T-system, one wonders?) Purchased for whale watching only, I did experiment and successfully photographed the moon at night by holding my SLR Digital camera up to the eyepiece, if that is of any help to you ...DOUGLAS P : Yes. You must purchase an adapter ring to match you camera to the scope.DOUGLAS J : why are you asking me? I never had one.BRIAN G : a t adaptrr would need to be purchased. i have seen them on ebay for about $20

Reviews about this item

Review Summary

2019-09-03T04:06:08

Rated 5 out of 5

great little scope with backpack

I picked this up to help with my target practice. Now I use it for birding and checking out the wild life around the neighborhood.

PETER G.

2018-10-13T09:41:00

Rated 4 out of 5

Very nice spotting scope for the money

I can't imagine a better scope for the price. Perfect for casual astronomy. One complaint is with the 45 degree diagonal, which could have had a tighter fit into the scope's back (I've subbed a 90 degree diagonal anyway - with a nice snug fit- so it doesn't matter).Also, the backpack/case could have had a foam lining, but, again, it's a scope! I'm very pleased with the optical performance.

Mark L.

2017-07-19T16:51:56

Rated 5 out of 5

Great addition to a growing scope collection.

I think for the price and size, this is a great little scope to have around. I have done a little astrophotography through it and was surprised how well the images of jupiter and saturn came out.

eric e.

2016-06-25T04:34:14

Rated 5 out of 5

Better than I expected

Great grab and go instrument. Able to resolve Saturn's ring in a light polluted urban area with no effort.

RONALD H.

2016-02-06T07:28:28

Rated 5 out of 5

Very satisfied

arrived on time. product exactly as described. very satisfied.

KARL M.

2013-12-18T19:00:00

Rated 5 out of 5

Orion Adapter

Orion sells an adapter for its Maksutov scopes that will fit this Celestron. With the adapter ( about $20) all SCT accessories will work on this Celestron.

DJ

2012-12-12T19:00:00

Rated 3 out of 5

May be more than I needed

Bought for a spotting scope for shooting. 8x21 Erect Image Finderscope was useless in locating target. Had to move scope around alot to find. You definitely need a heavy duty tripod with a solid base to use this. It shakes ALOT on a std camera tripod. I also tried to use it to look at stars, but did not have the proper filters to do so. This scope may be more than I need for spotting targets. Eye piece would be better if it had a rubber cup. Was difficult to look thru.

Andy

2011-09-26T21:00:00

Rated 5 out of 5

VALUE'S WORTH

Returning from France I decided to get a telescope for a friend there. Talked to several people including my friend..i came to same conclusion he did, for the money, you get the best of everything with use of both kinds of lens and a very strong name brand. Though i did not "ck it out" all the reviews, etc. gave this scope very good ratings.

mjm9011

2010-04-10T21:00:00

Rated 5 out of 5

I love this scope, it's a must have.

this scope is awesome..i need to get a sturdier tripod..

carlos s.

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Celestron C90 Specifications

  • Angular Field of View

    1.3

  • Eye Relief (mm)

    20 mm

  • Close Focus

    15 ft (4.6 m)

  • Optical Coatings

    Multi-Coated

  • Camera Adaptable

    Yes

  • Focal Length

    1250mm

  • Focal Ratio

    f/13.89

  • Magnification

    32mm (39x)

  • Objective Lens Diameter

    90mm

  • Size

    Full Size

  • UPC Code

    050234522687

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11 Accessories for Celestron C90 Mak, 3.5" (90mm) Maksutov-Cassegrain Spotting Scope Kit with Eyepiece, Finderscope & Accessories

  • All Accessories (11)
  • Tripods (2)
  • Photography Adapters (1)
  • Eyepieces & Accessories (1)
  • Lens Adapters (3)
  • T-Mounts (4)
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ProOPTIC LNTMLC T-Mount for Leica R
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ProOPTIC T-Mount for Pentax K/Autofocus/DSLR Cameras
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ProOPTIC T-Mount for Olympus 4/3 System Cameras
ProOPTIC T-Mount for Olympus 4/3 System Cameras
$8.95
ProOPTIC 07TM0M43 T-Mount for Micro 4/3 System Cameras
ProOPTIC 07TM0M43 T-Mount for Micro 4/3 System Cameras
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Celestron T-Ring for Nikon
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$16.95

About Celestron C90

FEATURED REVIEWS

I love this scope, it's a must have.

By carlos s.

this scope is awesome..i need to get a sturdier tripod..

VALUE'S WORTH

By mjm9011

Returning from France I decided to get a telescope for a friend there. Talked to several people including my friend..i came to same conclusion he did, for the money, you get the best of everything with use of both kinds of lens and a very strong name brand. Though i did not "ck it out" all the reviews, etc. gave this scope very good ratings.

How can you elevate your viewing experience The Celestron C90 Mak, a 3.5" (90mm) Maksutov-Cassegrain Spotting Scope Kit, is engineered to deliver unparalleled clarity and precision for both amateur astronomers and outdoor enthusiasts. This durable and high-quality scope boasts a powerful 90mm aperture Maksutov-Cassegrain optical design, renowned for its ability to produce razor-sharp images across a wide field of view.

The versatile nature of the C90 Mak makes it an exceptional choice for a multitude of applications, seamlessly transitioning from terrestrial to astronomical observations. Whether you're captivated by the craters of the moon or the nuances of wildlife, this reliable spotting scope kit, complete with a 1.25" universal eyepiece, ensures detailed and bright views of distant subjects.

Additionally, the C90 Mak is equipped with a finderscope to aid in quickly locating objects of interest. The kit's accessories enhance the overall functionality, providing a comprehensive solution for your observational needs. Its weather-resistant construction ensures that changing conditions won't interrupt your pursuit of discovery.

With a high user rating of 4.5 out of 5 stars, the Celestron C90 Mak stands out as a well-regarded instrument in its category. Its robust build and exceptional optical performance make it a preferred choice for those who demand reliability and quality in their equipment. Choose the C90 Mak for a superior spotting scope that promises to enrich your exploration of the skies and beyond.

Celestron C90 Features

  • Multi Coated Optics
  • Maksutov-Cassegrain Optical Design
  • Compact and Portable Design
  • Erect Image System for Terrestrial and Astronomical Use
  • Built-in T-Adapter threads for Ease of Adapting SLR Cameras
  • Comes with 32 mm Eyepiece, 45 Erect Image Diagonal and 8x21 Erect Image Finderscope
  • Backpack Made of Nylon
  • Limited Lifetime Warranty

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

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Key Features

  • Enjoy bright, clear images with this 90mm Maksutov Spotting Scope, perfect for detailed observations.
  • Multi-coated optics provide excellent light transmission for crisp, high-resolution viewing experiences.
  • Achieve 39x magnification with the included eyepiece, great for birdwatching and nature observation.
  • Capture stunning photos by adapting your camera to this versatile and adaptable spotting scope.
  • Durable and weather-resistant, this spotting scope is designed for reliable outdoor adventures.
  • Lightweight & portable design with included backpack makes this spotting scope ideal for travel.

What's in the box:

  • Nylon Backpack
  • Lens Caps
  • Lifetime Limited Warranty

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