EDGEHD 11 Optical Tube Assembly

432,909.00 excl. 18% GST

  • Experience our best Optical performance with EdgeHD’s 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 50-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 3 focal ratios: native f/10, f/7 with the addition of a focal reducer, 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 9×50 finderscope, 2” mirror diagonal for more comfortable viewing, and wide-angle 23 mm Luminos 2″ eyepiece are all included

Available on backorder

Optical Tube INFO:
Optical Design EdgeHD
Aperture 279.4mm (11″)
Focal Length 2800mm (110″)
Focal Ratio f/10
Focal Length of Eyepiece 1 23mm (0.91″)
Magnification of Eyepiece 1 122x
Finderscope 9×50
Star Diagonal 2″ with 1.25″ adapter
Optical Tube Aluminum
Highest Useful Magnification 660x
Lowest Useful Magnification 40x
Limiting Stellar Magnitude 14
Resolution (Rayleigh) 0.5 arc seconds
Resolution (Dawes) 0.42 arc seconds
Light Gathering Power (Compared to human eye) 1593x
Secondary Mirror Obstruction 95mm (3.75″)
Secondary Mirror Obstruction by Diameter 34%
Secondary Mirror Obstruction by Area 12%
Optical Coatings StarBright XLT
Optical Tube Length 610mm (24″)
Optical Tube Diameter 312.42mm (12.3″)
Optical Tube Weight 28 lbs (13 kg)
Dovetail CGE Dovetail Bar

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