Celestron Omni XLT 120 Telescope

Celestron Omni XLT 120 Telescope
Item # CE-21090
  • Want a telescope that is capable of looking at the planets and beyond? The Celestron Omni XLT 120 telescope can do that!
  • With almost 5" of glass and Celestron's patented XLT coatings, you'll get clear, bright images of objects in our solar system as well as brighter deep sky objects.
  • The Celestron CG-4 equatorial mount allows you to track celestial objects as they move across the sky, either with the included slow motion controls or with optional dual-axis motors! In fact, add the motors and you can try your hand at astrophotography!
  • Accessories like a 6x30 finderscope, 25mm eyepiece, planetarium software, and a full size steel -legged tripod round out this package.


Celestron Omni XLT 120 Telescope

At the heart of the Celestron Omni 120 XLT is a high quality refractor telescope with hand chosen lens for absolutely the best optics available in this price range. We're talking about 4.72" aperture with a limiting stellar magnitude of 12.9 and 0.97 arc seconds of resolving power. With superior optics and a stable platform the Celestron Omni XLT refractor is a great choice for astrophotography. Use the optional dual-axis motor drive (#93522) and polar axis finder (#94221) to track objects for long exposure photography. This handsome scope comes backed with a two year Celestron warranty and will endure as long as your fascination with the Cosmos!

Celestron Omni XLT 120 - 4.72" Refractor Telescope on CG-4 Equatorial Mount Features

  • Each lens used in Omni XLT optical systems is hand-selected for best quality.
  • StarBright XLT coatings provide maximized light transmission.
  • Every Omni XLT includes a 25mm multi-coated eyepiece, with 20mm of eye relief and a 50º field of view.
  • This scope comes with a 1.25" star diagonal and 1.25" rack and pinion focuser.
  • The Celestron CG-4 German Equatorial Mount sports setting circles and slow motion controls to accurately locate and track sky objects
  • Ball bearings in both axis of the mount equal smooth performance
  • The heavy-duty pre-assembled stainless steel tripod features 1.75" legs, accessory tray and bubble level for easy, "no too" set up.
  • Comes with The Sky Level 1 planetarium software with a 10,000 object database and enhanced images.
Celestron Product Number: 21090
Additional Information

Additional Information

SKU CE-21090
UPC Code 050234210904
Manufacturer Celestron
Telescope Series Celestron Omni XLT
Optical Design Refractor - Achromatic
Mount Type Equatorial - Manual
Warranty 2 Year Warranty
Telescope Aperture 4.72"
Telescope Focal Ratio f/8.33
Telescope Focal Length 1000mm
Limiting Stellar Magnitude 12.8
Highest Useful Magnification 283x
Optical Coatings Celestron XLT
Tube Color or Finish Celestron Dark Teal
Optical Tube Outer Diameter Not provided by manufacturer
Length of Optical Tube 40"
Optical Tube Weight 12.5 lbs.
Mount Weight 21 lbs.
Dew Shield Included? Yes
Diagonal Included? Yes - 1.25" Star Diagonal
Finder Included 6 x 30 Optical Finder
Eyepiece(s) Included 25mm
Power Adapter Included None - Does Not Require Power
CD ROMs Included The Sky Level 1
Counterweights Included (1) 7 lbs., (1) 4 lbs.
Alignment Procedure Manual Alignment
Tracking Modes N/A
Objects in Database N/A
OTA Mount Type CG-4 Dovetail Bar
Tripod Type Included Adjustable with Steel Legs
Total Telescope Weight 46 lbs.

Customer Reviews 7 item(s)

First Telescope
I dont have much to compare this scope to as its my first, but it provides splendid views of everything in the sky.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Mikhail / (Posted on 3/22/2014)
Omni XLT 120
Great scope with excellant optics and mount. Only negative comment is that the finder scope is poor, a finder with a right-angle eyepiece would be kinder to the neck and back when viewing objects higher in the sky than 45 degrees!
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Terry / (Posted on 2/10/2011)
Omni XLT 120 Refractor
I recieved the scope less than 48 hrs. after I
ordered it. After testing it for several nights
I find that the scope works perfectly. It surpasses my best expectations. Yes I would recommend buying one to anyone intrested.
User level would be anywhere from beginers to
intermediate level. I am very glad that I chose
this scope.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by J.P. Oravec / (Posted on 1/22/2011)
My first telescope
I have had this scope for 21 months. It's my first and only telescope so far. I purchased this scope for the price, xlt coatings, not needing to collimate a refractor, and the other positive reviews. Using a telescope on an EQ mount has been a learning experience. There is much to learn including balancing the telescope,
placement of the scope and weights on the mount, and polar aligning for tracking of planets. Without tracking, a planet will only stay in the viewfinder for a few seconds. Setting up takes about 20 minutes, and a bit of strength and dexterity is needed for set-up, polar
alignment, and finding objects in the finder,
especially when objects are high in the sky and the finder is therefore only a couple of feet off the ground. To date I have purchased and learned to use the following accessories in order to fully realize the viewing, tracking and astrophotography capabilities of this scope: OPT 2 Deluxe Dialectric Mirror diagonal, WO binoviewer and a second Celestron 25mm Omni 1-1/4 plossl, Televue 2x and 3x long 1-1/4 barlows, Celestron Polar finder for CG4, Orion EQ-3M single axis drive, Orion Accu Focus electronic focuser, and an Imaging Source DFK21AU04.AS USB Astronomy Camera with IR-cut filter, as well as a large foam padded hard case to hold all the accessories. I also made my own vibration pads out of sorbothane and furniture leg cups. The above accessories cost twice what the original scope and mount did, but I have a scope and mount that performs extremely well, allows me to view and photograph the moon and planets,and experience astronomy and
astrophotography to my heart's content (the skies and weather allowing.I got into astrophotography after realizing that at 160x, the planets appear to be only about 1/4 inch in diameter in the telescope's eyepiece. I'm very pleased with OPT and with this scope, mount and all of the accessories listed above.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Bob / (Posted on 3/2/2010)
My second and best telescope yet
I've been thinking of buying this telescope for about a week, reading reviews where ever I can find them. Seeing some good reviews, the urge to buy it was too much.
Yeah it took a week to come in 2nd Day Air but it was worth waiting for. I didn't expect the two boxes it came in to be so big. Both boxes showed signs of wear but the bubble wrap and the packing foam held.
When I first took out the telescope from the box, I was stunned by the size of the telescope. It was a little bigger than I had expected it to be but it doesn't bother me.
Set up was easy to understand in the manual, but there were a few typos I believe. No bother there but it needs to be corrected. The mount is nice and sturdy, that's a plus for me. It took me a while to understand the equatorial mount since this is my first move from Alt-Azimuth mount.
The only reason I knocked off 1/2 a star is because of the DEC clamp didn't function for me. By trying to tighten the DEC clamp with no tightening of the DEC axis led to the breakage of the bolt clamp :( I think that Celestron overlook this little detail and now I have to wait until a new bolt clamp comes in.
Other than that little issue for me, this is a great telescope. Optics are super for this price. Thanks Celestron for making such an awesome refractor!
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Jesse / (Posted on 12/13/2007)
Omni XLT 120
Recently I ordered a Celestron Omni XLT 120 refractor telescope and the optional eyepiece set. I received it one week after my internet order. Optcorp must have loaded the scope on a truck as soon as I pressed the send button! Optcorp gets 5 stars. Thanks Optcorp.

My order arrived in three large boxes and the packaging was very sturdy. All the parts were there and labeled well. Everything fit together easily with almost no need to resort to instructions.

The Omni XLT is larger than I had expected. I mean, I knew the exact dimensions from my research into which scope would best serve my needs and budget. I even laid it out with a tape measure on my table to get an idea of size. But, you just don't realize how big it is until it's in your hands.
The size is one of my problems with this scope. The mount, being manually operated, puts the comtrols almost out of reach while looking through the eyepiece, even with the optical tube adjusted as far forward as possible on the mount. I can't take points off for that though, just FYI. What I did take the 1/2 point off for was the size and/or placement of the control knobs. When the mount is rotated the knobs can hit each other. With some alignments I have them against each other so tight that one cannot turn without the other turning. Then I have to stop observing in order to move one knob to the opposite side of the mount. To solve this problem? Slightly smaller knobs.

Other than that, the Omni XLT 120 is great telescope buy. This scope has very good optics and is well made in fit and finish. The tripod and mount is heavy and sturdy. The optional eyepiece set is a very useful addition with the bonus of a great looking aluminum case to keep them safe.

Soon, my Omni will get a dual axis drive to make it even better.

Clear skies!
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Gary / (Posted on 11/18/2007)
My best scope yet
I received my new Omni XLT 120 refractor about 3:00 pm Friday, July 20th. I set it up to get familiar with this scopes features. Everything in the two packages arrived intact. First was the size, wow this is a large scope. The tripod and the mount, especially the mount, are quite heavy. This makes for a really stable platform. Considering the weight once fully assembled, slewing the scope was effortless. Just balance the scope as described in the manual. Note to Celestron: The box with the tripod and the box with the OTA both had manuals and software. The only problem I have to report is that I had to take apart the 1.25 star diagonal as the mirror was not positioned correctly. Two minutes to fix, no big.
That night (last night I took the new Omni out to the dark site to meet several astronomy club members and go for a test viewing. Another WOW! Everybody was impressed by the handling and optics. I have never seen the quarter moon so sharp and clear. Craters inside craters. The patterns of Jupiter were quite clear, after putting the light reduction cap on the lens though, as the light transmission is so strong. I was using eyepieces that are just to much for my 10 Dob 5mm or 9mm on a 2X barlow. 25mm and 38mm really were the best for seeing open clusters.
Even managed to spot that comet between Alkaid and Izar. This was my fifth or sixth viewing session with these new friends of mine and I saw more last night than all other nights put together. The Equatorial mount takes some study but even so try just looking for faint fuzzies through the finder scope and you might find M6, the butterfly cluster, like I did.
All in all an awesome scope for the price with great potential. I already have a wish list started.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Scanner Eric / (Posted on 7/21/2007)
Included Items

Included Items

  • Celestron Omni 120mm Refractor Telescope with XLT Coatings
  • 2" Focuser
  • Heavy Duty Omni CG-4 German Equatorial Mount
  • 7-lb Counterweight
  • 4-lb Counterweight
  • Adjustable Height, 1.75" Steel Leg Tripod
  • Center Brace
  • Accessory Tray
  • 6X30 Finder
  • Bracket
  • 1.25" Star Diagonal
  • 1.25" 25mm Eyepiece
  • The Sky, Level 1 CD-ROM
Questions & Answers

Product Questions

Hi, im looking to buy a telescope. Love the hobby! I was thinking about the Omni xlt 120 or the Omni 150. Why is the 150 more affordable than the 120? I want clear crisp shots of the planets and good views of the galaxies and nebulas. Can anyone help me? 
Is this a GO-TO telescope? If yes is there an AC adapter available for purchase? Thanks. p.s. Do you ship to Canada?
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