EDGEHD 9.25 Optical Tube Assembly

₹310,625.00 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 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 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	234.95mm (9.25″)
Focal Length	2350mm (93″)
Focal Ratio	f/10
Focal Length of Eyepiece 1	23mm (0.91″)
Magnification of Eyepiece 1	102x
Finderscope	9×50
Star Diagonal	2″ with 1.25″ adapter
Optical Tube	Aluminum
Highest Useful Magnification	555x
Lowest Useful Magnification	34x
Limiting Stellar Magnitude	14.4
Resolution (Rayleigh)	0.59 arc seconds
Resolution (Dawes)	0.49 arc seconds
Light Gathering Power (Compared to human eye)	1127x
Secondary Mirror Obstruction	85mm (3.35″)
Secondary Mirror Obstruction by Diameter	36%
Secondary Mirror Obstruction by Area	13%
Optical Coatings	StarBright XLT
Optical Tube Length	559mm (22″)
Optical Tube Diameter	271.78mm (10.7″)
Optical Tube Weight	21 lbs (9.53 kg)
Dovetail	CGE Dovetail Bar