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Celestron Omni XLT 150
  • Celestron Omni XLT 150
  • Celestron Omni XLT 150

Celestron Omni XLT 150 Reflector

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.

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  • 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
  • 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
Optical Design Newtonian Reflector
Aperture (mm) 150 mm (5.91 in)
Focal Length 750 mm (30 in)
Focal Ratio 5
Focal Length of Eyepiece 1 (mm) 25 mm (0.98 in)
Magnification of Eyepiece 1 30 x
Finderscope 6x30
Mount Type Omni CG-4 Equatorial
Tripod Leg Diameter 1.75" Stainless
Highest Useful Magnification 354 x
Lowest Useful Magnification 21 x
Limiting Stellar Magnitude 13.4
Resolution (Rayleigh) 0.93 arc seconds
Resolution (Dawes) 0.77 arc seconds
Light Gathering Power (Compared to human eye) 459 x
Apparent Field of View 1.67 °
Linear Field of View (@1000 yds) 88 ft (27 m)
Optical Coatings StarBright XLT
Optical Tube Length 26.5 in (673 mm)
Optical Tube Weight 12 lbs (5.44 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

Our view

The Omni 150 is a 6" f/5 Newtonian and represents the best value for money telescope in the Omni range. It has a parabolic primary mirror to remove the spherical aberration that would be present in an f/5 spherical mirror. This is an excellent all-purpose telescope for those starting out in astronomy, or as a second more portable telescope. Its performance for deep-sky is excellent for a 6" aperture, and it will provide sharp lunar and planetary images. The German equatorial mount is simple to use with smooth slow motion controls, and optional single or dual axis motors can be added for tracking in RA. With a digital SLR camera at the focus of the telescope, it becomes a 750mm f/5 wide-angle lens. It also offers great views of the moon when a webcam is used in place of the eyepiece.


Use an Omni 2X Barlow when using a webcam for imaging the moon and planets. This will give you the larger image scale you require. Also, keep the telescope collimated for consistent optical quality. Contact us here at Northallerton for further advice.


PDF Specification sheet for filters and dew straps


Data sheet

Optical Design
6 inch
Mount Type
CG-4 Equatorial
Focal Length
750 mm
Focal Ratio
Optical Coatings
Starbright XLT Coating
Optical Tube Length (mm)
26.5 inch
What is more important?
Brightness over image resolution
Telescope to navigate for you?
No, I want to find objects myself
Normally on display?
Yes - But Check First If Making A Special Journey!

Specific References

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