EDGEHD 8 Optical Tube Assembly (CG5)

163,558.00 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, 1.25” mirror diagonal for more comfortable viewing, and 40 mm Plössl 1.25” eyepiece are all included

Available on backorder

Optical Tube INFO:
Optical Design EdgeHD
Aperture 203.2mm (8″)
Focal Length 2032mm (80″)
Focal Ratio f/10
Focal Length of Eyepiece 1 40mm (1.57″)
Magnification of Eyepiece 1 51x
Finderscope 9×50
Star Diagonal 1.25″ Star Diagonal
Optical Tube Aluminum
Highest Useful Magnification 480x
Lowest Useful Magnification 29x
Limiting Stellar Magnitude 14
Resolution (Rayleigh) 0.69 arc seconds
Resolution (Dawes) 0.57 arc seconds
Light Gathering Power (Compared to human eye) 843x
Secondary Mirror Obstruction 64mm (2.5″)
Secondary Mirror Obstruction by Diameter 31%
Secondary Mirror Obstruction by Area 9.77%
Optical Coatings StarBright XLT
Optical Tube Length 432mm (17″)
Optical Tube Diameter 238mm (9.37″)
Optical Tube Weight 14 lbs (6.35 kg)
Dovetail CG-5 Dovetail bar

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