Celestron - EdgeHD 925 - 9.25" EdgeHD Optical Tube Assembly (OTA) for CGE/ CGX - 91040-XLT

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  • Experience premium optical performance with Celestron's EdgeHD aplanatic, flat field Schmidt-Cassegrain optics for pinpoint stars all the way to the edge of today’s largest imaging sensors and widest eyepieces

  • Aluminum optical tube with tube vents featuring an integrated 95-micron mesh filter allows hot air to be released from behind the primary mirror. Mirror support knobs hold the mirror in place and reduce image shift during imaging

  • Versatile design accommodates 2 focal ratios: native f/10 or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories

  • Celestron’s premium StarBright XLT coatings provide maximum light transmission

  • A 9x50 finderscope, 2” mirror diagonal for more comfortable viewing, and wide-angle 23 mm Luminos 2" eyepiece are all included

SKU: CEL-91040-XLT
Manufactured by:
Celestron
 

Product Description

CELESTRON  -  9.25"  EdgeHD™  Optical Tube Assembly (OTA) • 91040-XLT

The Celestron EdgeHD 925 is a catadioptric based optical tube assembly with the EdgeHD optical system to reduce coma. This makes it outstanding for both visual astronomy and astrophotography and is capable of imaging a wide variety of celestial objects ranging from planets to distant galaxy clusters. With the addition of the StarBright XLT™ coatings by Celestron, excellent and efficient light transmission is realized. Since most Schmidt-Cassegrain designs normally have a default focal ratio of f/10 but can be reduced by using the Fastar™ system of removable secondary mirrors to create a blazing- fast focal ratio of f/2 for wide field and fast astrophotography with most deep sky objects. This is a step up from the regular Schmidt-Cassegrain design!

  • Catadioptric system
  • EdgeHD optical system to reduce coma on edges of field of view
  • 2500mm focal length
  • 9.25" aperture
  • StarBright XLT Coatings
  • 9x50 Finderscope
  • 23mm Luminos Eyepiece - 2"
  • 2" Star Diagonal
  • 1.25" Visual Back
  • Dovetail slide bar for mounting the CGE mount
  • Fastar compatible to transform f/10 to f/2


 

 

 

 

 

 

 

 

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Specifications

Name Celestron - EdgeHD 925 - 9.25" EdgeHD Optical Tube Assembly (OTA) for CGE/ CGX - 91040-XLT
Manufacturer Celestron
Model CEL-91040-XLT
UPC 050234104098
In The Box Celestron 9.25" EdgeHD Optical Tube CGE Dovetail 9x50 Finderscope with Bracket 2" Star Diagonal 23mm Luminos Eyepiece
Aperture 234.95 mm (9.25 in)
Dovetail Compatibility CGE Mount
Eyepiece 1 23 mm (0.91 in)
Eyepiece 1 Magnification 102 x
Eyepiece Focal Length 23 mm (0.91 in)
Finderscope 9x50
Focal Length 2350 mm (92.52 in)
Focal Ratio 10
Highest Useful Magnification 555 x
Light Gathering Power 1127 x
Lowest Useful Magnification 34 x
Optical Coatings StarBright XLT
Optical Design EdgeHD
Optical Tube Aluminum
Optical Tube Length 22 in (558.8 mm)
Optical Tube Weight 21 lbs (9.53 kg)
Resolution (Dawes) 0.49 arc seconds
Resolution (Rayleigh) 0.59 arc seconds
Secondary Mirror Obstruction 3.35 in (85.09 mm)
Secondary Mirror Obstruction by Area 13.1 %
Secondary Mirror Obstruction by Diameter 36.2 %
Star Diagonal 2" w/ 1.25" adapter

Reviews

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The scope is a definite keeper. Very sharp views, nice flat field for imaging (Posted on 2/21/2017)
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In the Box

Celestron 9.25" EdgeHD Optical Tube
CGE Dovetail
9x50 Finderscope with Bracket
2" Star Diagonal
23mm Luminos Eyepiece

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