Cart 0


Omni XLT 102 Telescope (21088)

  • 50995

This item is out of stock but you can place an order now and we’ll ship when it becomes available.

staff pick right

Our Take

We LOVE the Celestron Omni XLT 102 for beginners. With it’s 4” (102mm aperture) and nice sturdy mount, we think you will be a very happy planet hunter.

FREE Ground Shipping available on the Omni XLT 102 to the Continental US!  Just select "Free Shipping" during checkout.


  • High quality optics start with each lens and(or) mirror being hand selected so only the finest grade of optical glass is used
  • StarBright XLT coatings provide maximized light transmission
  • 25 mm multi-coated eyepiece - 20 mm eye relief, 50° FOV
  • 1.25" star diagonal
  • CG-4 German Equatorial mount with setting circles and slow motion controls - to accurately locate and track sky objects
  • Ball bearings in both axis of the mount for smooth performance
  • Heavy-duty pre-assembled stainless steel tripod featuring 1.75" legs, accessory tray and bubble level
  • Easy no-tool setup


Omni XLT series features the stable platform of the CG-4 mount and high quality optics. Using aspheric shaping technology in conjunction with hand-figuring the optics the Omni XLT presents an image with virtually no spherical aberration. We also added our famous StarBright XLT coating system to further enhance light transmission.


Optical Design Refractor
Aperture (mm) 102 mm (4.02 in)
Focal Length 1000 mm (39 in)
Formula:Focal Ratio 9.8
Focal Length of Eyepiece 1 (mm) 25 mm (0.98 in)
Formula:Magnification of Eyepiece 1 40 x
Finderscope 6x30
Mount Type Omni CG-4 Equatorial
Tripod Leg Diameter 1.75" Stainless
Formula:Highest Useful Magnification 241 x
Formula:Lowest Useful Magnification 15 x
Formula:Limiting Stellar Magnitude 12.5
Formula:Resolution (Rayleigh) 1.37 arc seconds
Formula:Resolution (Dawes) 1.14 arc seconds
Formula:Light Gathering Power (Compared to human eye) 212 x
Apparent Field of View 1.25 °
Linear Field of View (@1000 yds) 66 ft (20 m)
Optical Coatings StarBright XLT
Optical Tube Length 39.5 in (1003 mm)
Optical Tube Weight 9.5 lbs (4.31 kg)
Tripod Weight 12.5 lbs (5.67 kg)
Weight of Counterweights 7 lbs (3.2 kg) and 4 lbs (1.8 kg)
Warranty 2-year Telescope Warranty

Customer Experiences



Our Zero-Risk

Telescope Upgrade Path

For our customers who dream of expanding their horizons and gazing deeper into the night sky, we offer personalized telescope upgrade paths. Learn More> 

Shop For...