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popular Posted by Namelessme • Dec 15, 2022
popular Posted by Namelessme • Dec 15, 2022

Celestron Omni 102AZ Telescope -- Costco - $160 instore only (YMMV)

$160

$299

46% off
Costco Wholesale
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It's the time of year where people tend to hunt down cheap telescopes. And I've posted on a couple of those threads. Normally anything below $200 is junk, but this scope is an exception.

Now not every Costco may have it, and I have seen it in-store only... and with Xmas coming up, they may sell out fast. So it's a YMMV sort of deal.

But its a 102mm fast refractor, F/6.5, includes a somewhat shaky, but still usable mount. And includes slow motion controls (rare with cheaper scopes) , 2 eyepieces (not the greatest, but okay to start with), and a phone adapter for those who want to take quick shots of the moon.

As for what you can see with this scope:

Major star clusters, Orion Nebula, Bands of Jupiter, Cassini Division w/ Saturn (on a good seeing night), and of course a very cratery moon. Fast scopes like these will have chromatic aberration, which is sort of like a tinge of color where it shouldn't be. But it comes with the territory for achromatic refractors.

Aperture: 102mm (4.01")
Focal Length: 660mm (25.98")
Focal Ratio: f/6.5

https://www.celestron.com/product...ter-remote

And best of all, it's Costco. If you (or your kids) don't like it, super easy to return. I own one as a spare grab and go scope... good for the winter, no cooling or wait times, no collimation, just pick up with one hand and I can view in minutes.

Costco Warehouse Locator [costco.com]
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It's the time of year where people tend to hunt down cheap telescopes. And I've posted on a couple of those threads. Normally anything below $200 is junk, but this scope is an exception.

Now not every Costco may have it, and I have seen it in-store only... and with Xmas coming up, they may sell out fast. So it's a YMMV sort of deal.

But its a 102mm fast refractor, F/6.5, includes a somewhat shaky, but still usable mount. And includes slow motion controls (rare with cheaper scopes) , 2 eyepieces (not the greatest, but okay to start with), and a phone adapter for those who want to take quick shots of the moon.

As for what you can see with this scope:

Major star clusters, Orion Nebula, Bands of Jupiter, Cassini Division w/ Saturn (on a good seeing night), and of course a very cratery moon. Fast scopes like these will have chromatic aberration, which is sort of like a tinge of color where it shouldn't be. But it comes with the territory for achromatic refractors.

Aperture: 102mm (4.01")
Focal Length: 660mm (25.98")
Focal Ratio: f/6.5

https://www.celestron.com/product...ter-remote

And best of all, it's Costco. If you (or your kids) don't like it, super easy to return. I own one as a spare grab and go scope... good for the winter, no cooling or wait times, no collimation, just pick up with one hand and I can view in minutes.

Costco Warehouse Locator [costco.com]

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63 Comments

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Dec 15, 2022
12,304 Posts
Joined Jan 2007
Dec 15, 2022
MadPup
Dec 15, 2022
12,304 Posts
How does this compare to a Hubble or a James Webb?
15
3
Dec 15, 2022
5,709 Posts
Joined Mar 2004
Dec 15, 2022
supernoman
Dec 15, 2022
5,709 Posts
Quote from MadPup :
How does this compare to a Hubble or a James Webb?
A few billion dollars less so image a few billion times worse.
1
Dec 15, 2022
45 Posts
Joined May 2016
Dec 15, 2022
ranjhu
Dec 15, 2022
45 Posts
Quote from MadPup :
How does this compare to a Hubble or a James Webb?
It does not compare to those two
4
Pro
Dec 15, 2022
8,615 Posts
Joined Jun 2005
Dec 15, 2022
komondor
Pro
Dec 15, 2022
8,615 Posts
It is better since it is an optical telescope vs a digital only one.
1
1
Dec 15, 2022
107 Posts
Joined Oct 2004
Dec 15, 2022
alda_armez
Dec 15, 2022
107 Posts
How does this compare to zhumell z100 or orion skyscanner.
Original Poster
Dec 15, 2022
4,320 Posts
Joined Feb 2008
Dec 15, 2022
Namelessme
Original Poster
Dec 15, 2022
4,320 Posts
Quote from alda_armez :
How does this compare to zhumell z100 or orion skyscanner.

I prefer the Omni 102AZ to either of those.

I used to own a Zhummel 100mm ... problem was the view outside of the center was not very good. And by not very good, I mean kind of terrible... coma, or star oddness, not sure what it was... but let's just say stars were not exactly star-like.

In theory they are sort of collimatable, but only with the secondary. I had to center mark my scope and do the best I could, but even then, I was never really pleased with the views.

If you want an upgrade, then the astronomer's without borders scope at $250 would probably be considered better.

It'd still require a solid base, collimation, cooling/wait time, and it's pretty fast at f/5. But assuming you
are okay with finding a place to put it, it'd likely be considered an upgrade. And lots of people like it.

A Starblast is another option at $230, but I'd prefer the refractor over it. F/4 is a little too speedy for me.
Last edited by Namelessme December 14, 2022 at 06:05 PM.
Dec 15, 2022
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Dec 15, 2022
1,193 Posts
Joined May 2016
Dec 15, 2022
dam091
Dec 15, 2022
1,193 Posts
Quote from Don_Mayor :
My question with these telescope has always been what can I see with this. My standard is Saturn, can I see Saturn with this?
Why don't you go ahead and read OP's very well written run down, right at the top of the page, where you scrolled right past to leave this comment?
2
Dec 15, 2022
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Joined May 2011

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Dec 15, 2022
719 Posts
Joined Mar 2010
Dec 15, 2022
searsy
Dec 15, 2022
719 Posts
will we see the inhibitors coming?
1
Original Poster
Dec 15, 2022
4,320 Posts
Joined Feb 2008
Dec 15, 2022
Namelessme
Original Poster
Dec 15, 2022
4,320 Posts
Quote from Don_Mayor :
Can anyone post the Costco item link?

It's not listed for online purchasing (or at least I didn't see it).

Although for Canada people, they do have it online.

Here is the product item link again though, if you just wish to
see specs. If you want it, afraid you'll have to go to the store.

https://www.celestron.com/product...ter-remote


I suggest calling ahead and simply asking them if they have it --
save a trip if they don't. Click the administrator option w/ costco
to get an actual person.
Dec 15, 2022
111 Posts
Joined Apr 2009
Dec 15, 2022
Larroo
Dec 15, 2022
111 Posts
I bought this 2 weeks ago in-store and returned it quickly before the holiday return line starts. Personally found it to be junky, especially at this price. Saturn was a white orb with a hint of ring. Moon was the only clearly visible object to see. Even online reviews were not too favorable, though I figured I would give it a try. Bluetooth remote for taking a picture is a cheap Five and Below type remote, certainly nothing to be impressed by. Perhaps mine was a dud, but seems unlikely. I think it's just overpriced to give the illusion of something better.
Last edited by Larroo December 15, 2022 at 01:04 PM.
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Original Poster
Dec 15, 2022
4,320 Posts
Joined Feb 2008
Dec 15, 2022
Namelessme
Original Poster
Dec 15, 2022
4,320 Posts

Our community has rated this post as helpful. If you agree, why not thank Namelessme

Quote from Don_Mayor :
My question with these telescope has always been what can I see with this. My standard is Saturn, can I see Saturn with this?

I'll mention again:

Major star clusters, Orion Nebula, Bands of Jupiter, Cassini Division w/ Saturn (on a good seeing night), and of course a very cratery moon. Fast scopes like these will have chromatic aberration, which is sort of like a tinge of color where it shouldn't be. But it comes with the territory for achromatic refractors.

Now the determining factor will be your skies. Is Saturn high in the sky, viewing good for the night, and so on?

And admittedly fast refractors like these aren't optimal for planets. Again, it's due to chromatic aberration (false color). But for Saturn you can still get a pretty decent view, assuming the skies are cooperating. Jupiter may be a little problematic since it's so bright, but you can make out its bands. Use a decent mag on the planets too, 25mm won't cut it.

I also say the above with the knowledge that a larger dob will provide a much better view. If new to this, the planets even with a bit of false color can still look quite nice.

Where this scope excels is for wide views, the Pleiades for instance look great in a scope like this.
Last edited by Namelessme December 15, 2022 at 02:45 PM.
1
Original Poster
Dec 15, 2022
4,320 Posts
Joined Feb 2008
Dec 15, 2022
Namelessme
Original Poster
Dec 15, 2022
4,320 Posts
Quote from Larroo :
I bought this 2 weeks ago in-store and returned it quickly before the holiday return line starts. Personally found it to be junky, especially at this price. Saturn was a white orb with a hint of ring. Moon was the only clearly visible object to see, but that was it. Even online reviews were not favorable, though I figured I would give it a try. Bluetooth remote for taking a picture is a cheap Five and Below type remote, certainly nothing to be impressed by. Perhaps mine was a dud, but seems unlikely. I think it's just overpriced to give the illusion of something better.

Reviews are actually quite favorable, and folks over at Cloudy Nights also like it. I can point to youtube reviews that are positive as well.

https://www.youtube.com/watch?v=WdEh4EODjV8

As for Saturn, it'll depend on your sky and if you are using a high enough magnification.

I've seen Saturn with it, and it's certainly much more than just a white orb with a hint of a ring ... unless I use very low magnification that is. But any scope, with low mag on the planets, won't look much more than an orb.
And no clue what you mean in regard to overpriced... $160 is not expensive for a telescope.
Last edited by Namelessme December 15, 2022 at 01:05 PM.

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Dec 15, 2022
111 Posts
Joined Apr 2009
Dec 15, 2022
Larroo
Dec 15, 2022
111 Posts
Quote from Namelessme :
Reviews are actually quite favorable, and folks over at Cloudy Nights also like it. I can point to youtube reviews that are positive as well.

https://www.youtube.com/watch?v=WdEh4EODjV8

As for Saturn, it'll depend on your sky and if you are using a high enough magnification.

I've seen Saturn with it, and it's certainly much more than just a white orb with a hint of a ring ... unless I use very low magnification that is. But any scope, with low mag on the planets, won't look much more than an orb.
And no clue what you mean in regard to overpriced... $160 is not expensive for a telescope.
As with anything, it's possible it was defective, and thankfully Costco took it back without issue. Doesn't hurt to try it out and hopefully you'll have a better experience.
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