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Celestron - Omni XLT 150mm Optical Tube Assembly

Model#: 31057-1

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Manufactured by: Celestron


Omni XLT Series Telescopes


2-year Telescope Warranty


Celestron - Omni XLT 150 OTA  (Optical Tube Assembly)

  • High quality optics start with each lens and mirror being hand selected so only the finest grade of optical glass is used.
  • StarBright XLT coatings provide maximized light transmission. 
  • A great choice for exploring the amazing world of astrophotography.
  • Includes a two year Celestron Warranty


The new Celestron Omni XLT Series features  the latest in hybrid refractor, reflector and Schmidt-Cassegrain optical designs .  Using aspheric shaping technology in conjunction with hand-figuring the optics, the Omni XLT presents an image with virtually no spherical abberation. Celestron has also added their famous StarBright XLT coatings to further enhance light transmission.  The mirrors are fully coated with multiple layers of high reflectivity aluminum. The aluminum coatings are then enhanced with titanium dioxide and overcoated with a protective layer of silicon monoxide for long life. These are the same mirror coatings used on Celestron’s largest and most expensive telescopes.


A 750mm focal length and focal ratio of f/5 presents an image ideal for both visual and astrophotography use .  This baby also comes with a 1.25" star diagonal, 1.25" rack and pinion focuser, and high quality Celestron 25 mm Plossl eyepiece.  The  finderscope is a straight-thru 6 X 30mm achromat.



The Celestron Omni XLT 150 is a 6" Newtonian Reflector telescope with a limiting stellar magnitude of 13.4 and 0.76 arc seconds of resolving power.






 This XLT 150 Optical Tube Assembly can be mounted to most all CGEMs / Tripods via its Vixen style dovetail bar, however, it is best matched to Celestron's CG-4 Equatorial Mount (product #91509).  This mount can be further up-graded to Celestron's Dual-axis Motor Drive/ Drive Corrector  (#93522) - essential for astrophotography.  An optional Polar Axis Finder  (#94223) is also available to increase the accuracy of your alignment.

















Product Series

The new Omni XLT Series features refractor, reflector and Schmidt-Cassegrain optical designs coupled with our new Omni CG-4 heavy-duty German Equatorial mount and sturdy tripod featuring 1.75" stainless steel legs and center tray for superior rigidity and vibration dampening.

Additional Information

Name Celestron - Omni XLT 150mm Optical Tube Assembly
Manufacturer Celestron
Model 31057-1
Custom Stock Status Call for Availability
Angular Field of View 1.67°
Aperture 150mm (5.91")
Eyepieces 1
Eyepiece 1 25mm Plossl
Eyepiece Apparent FOV 50°
Eyepiece Eye Relief 20mm
Finderscope 6 x 30
Focal Length 750mm (30°)
Focal Ratio f/5
Focuser Helical
Highest Useful Magnification 354x
Light Gathering Power 459x
Limiting Stellar Magnitude mag 13.4
Linear Field of View (@1000 yds) 88ft (27m)
Lowest Useful Magnification 21x
Optical Coatings StarBright XLT multicoated
Optical Design Newtonian Reflector
Optical Tube Length 26.5"
Optical Tube Weight 12 lbs
Resolution (Dawes) 0.77 arc seconds
Resolution (Rayleigh) 0.93 arc seconds