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Celestron C90 Mak Spotting Scope
$209.99 $318.95 Save 34%
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(8 reviews)
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Most Helpful Positive Review Quality product for celestial and terrestrial use.
Quality is evident particularly with its Maksutov design. I had owned a ref...
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Most Helpful Negative Review Just got my Celestron 90 Maksutov Spotting Scope / Telescope
I Just got my Celestron 90 Maksutov Spotting Scope / Telescope and set it u...
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Affordable, versatile and portable. Perfect 1st scope for a beginner.

by Cirrus, from United States, CA Written on September 5, 2014
This is a surprisingly small telescope - one that fills only half the nylon backpack it comes with. 90mm of aperture gathers more light than 70 to 80mm scopes that most beginners start out with. And because it comes with a correct image-erect diagonal, it can be used for terrestrial observations as well.

The image quality itself is very sharp and clear, and is ideal for viewing the moon and the brighter planets (Saturn, Jupiter, Venus). This scope is however too small for viewing Mars, which needs magnification in excess of 200x. Magnification with the included eyepiece will be only 39x and this scope works well up to around 150x, so if you would like higher magnification, additional standard eyepiece accessories is recommended.

This scope also comes with a standard T-thread, so you can buy a T-ring for $20 and connect your DSLR directly to it. It acts as a lens for your DSLR, and takes good quality pictures both in the day or at night.

One downside to this scope model. I have seen quite a few with no so good contrast. I guess there may be some variation to its quality. There are mods on the internet for increasing contrast, so you may want to check.

There is another C90 version with a different product package including a small tripod and an additional eyepiece. My recommendation is to skip it and buy this one because the tripod is too shaky and adjusting the direction the scope points to is a pain. That takes the fun out of astronomy for beginners. Instead bu...
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Pros:
  • surprisingly portable
  • Clear sharp views
  • Comes with a T-thread (easy to connect camera)
Cons:
  • Some has not so good contrast (maybe QC issues)
Best Used for:
  • Moon and Brighter planets
  • Terrestrial (Day time use)
Would recommend: Yes
0 of 0 found the following review helpful.
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Best value for money spotting scope.

by jason, from Australia, sydney Written on August 26, 2014
Very bright and clear image with sharp colour free edges at 39X. It is a brilliant spotting scope with the supplied eyepiece. It's not necessary to buy extra eyepieces to increase magnification. I tried to push it to 120X, which resulted in poor definition image. I now have C90 and C6 side by side. I used C90 more often. Only use C6 for occasional high magnification terrestrial view.

Highly recommended...
Pros:
  • Good optics at 39X
Cons:
  • Not stable at high magnificatoin
Best Used for:
  • spotting scope
Would recommend: Yes
0 of 0 found the following review helpful.
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Just got my Celestron 90 Maksutov Spotting Scope / Telescope

by Legacy Reviewer, Written on December 20, 2011
I Just got my Celestron 90 Maksutov Spotting Scope / Telescope and set it up, not impressed with it at all thus far.

So far I've found it unusable because,....

#1. The tripod that came with it is not heavy enough to keep the scope from shaking badly while adjusting it.

#2. I can not get a sharp terrestrial image no matter how I adjust it, it's always blurry and never in focus.

#3. Tried mounting a Canon XSi to the scope and got the same results with the focus, always blurry no matter what.

I will try this scope at night but so far I'm not impressed with it at all as far as it being used as a terrestrial spotting scope or used as a telephoto lens for a camera, it does not exhibit the quality that it is advertised as having.

So far on a scale of one to ten I'd give it a rating of 1, pretty poor indeed and I would NEVER recommend that anyone buy this Celestron 90 Maksutov Spotting Scope / Telescope.


Pros: Very cheap scope
Cons: Unable to get a sharp focus thus far, tripod is far to light duty for the scope, shaking is a problem...
Would recommend: No
1 of 13 found the following review helpful.
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Good telescope

by Legacy Reviewer, Written on March 19, 2011
I'm adding on to the other review, I saw venus and its phase, Mercury seems like a brown star, Jupiter looks like a giant dot with several dots around it; those are its moons, saturn looked like a dot with rings around it and a faint dot; that is its moon titan. Still to small to see cassinis division, The orion nebula looked like a hazy cloud, the ring nebula looked like an eye a liitle but it was gray, still cant find andromeda galaxy. :( Tonight theres a perigee moon:)
Pros: portable good aperture
Cons: not enough magnification...
Would recommend: Yes
0 of 2 found the following review helpful.
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Spotting Scope or Telescope

by Legacy Reviewer, Written on February 27, 2011
I am adding on to the other review. I saw Saturn's rings. They were to small to see the cassini's division. I looked at Jupiter and saw no detail on it but I saw it's four moons. I'd probably buy a filter for this in order to see detail on some planets. I'll try to look at Mars, Venus, and Mercury when I can. I aimed it towards the Orion Nebula. (right below the farthest left star on Orion's belt) I couldn't see any detail because I live in the suburbs of Chicago.It comes with a 32 and a 12.5 mm PLOSSL eyepieces.
Pros: light, portable
Cons: not enough magnification...
Would recommend: Yes
2 of 2 found the following review helpful.
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pretty good

by Legacy Reviewer, from United States, WA Written on February 19, 2011
Is this a spotting scope or a telescope? I think it's a telescope. It is very light compared to the other ones. I took it out one night and I saw Jupiter's four moons and Saturn's rings and one of its moons. Our moon is very clear and you could see mares, and craters very clear. I live in the suburbs of Chicago so I can't really see any detail on the Orion nebula or Andromeda Galaxy or Jupiter.
Pros: easy for travel,
Cons: the tripod is hard to tighten when seeing an object...
Would recommend: Yes
0 of 0 found the following review helpful.
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Quality product for celestial and terrestrial use.

by Legacy Reviewer, Written on April 7, 2010
Quality is evident particularly with its Maksutov design. I had owned a reflector telescope in the past which was suited for astronomical use only. This scope can be used for terrestrial viewing as well as celestial. I viewed several landmarks from our Los Feliz Hills (Griffith Park) home and clearly located cruise ships departing from the Long Beach cruise terminal 32 miles away! Furthermore, the surf in the Pacific ocean is viewed clearly in the Marina Del Rey area as well as aircraft landing into LAX with great detail. As night comes, the planets and the moon are crystal clear. This is a quality product well suited for many purposes.
Leon J. Makasjian
Pros: Dual purpose, portable, stellar quality with room to grow.
Cons: Could use dedicated tripod, some glare in 32mm supplied lens....
Would recommend: Yes
10 of 10 found the following review helpful.
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Excellent scope for city viewing and astronomical use

by Legacy Reviewer, from United States, WA Written on April 4, 2010
I purchased this scope mainly for city viewing and general astronomical use. I have owned a large reflector telescope in the past which was suited only for astronomy. With this scope, I can view over 32 miles into Long Beach from my home in Los Feliz (800 ft. elevation). I clearly located the departing Carnival Splendor Cruise ship as well as many landmarks. Furthermore, I can clearly view aircraft types and airlines making the final touchdown into LAX. If you have a view home, this is the scope to have, the 32mm lens is pretty good. I also got incredible views of the moon and planets with great detail. This is a great scope to have and rivals dedicated astronomy scopes costing few hundred more.
Pros: Quality product and portable
Cons: Can have a dedicated portable tripod, some glare in supplied 32mm lens...
Would recommend: Yes
3 of 3 found the following review helpful.
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Comments on 8 User Reviews of Celestron C90 Mak Spotting Scope