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Celestron EdgeHD 9.25-inch f/10 SCT with Celestron
0.7X focal reducer & Canon SL1 DSLR
Celestron EdgeHD 9.25-inch f/10 Schmidt Cassegrain telescope
Aperture: 9.25 inches (235 mm)
Focal Length at prime f/10: 2350 mm, focal length with Celestron 0.7X
focal reducer (f/7): 1644 mm
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Specifications of Celestron EdgeHD 9.25-inch f/10
telescope
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Celestron EdgeHD 9.25-inch is an Aplanatic (no spherical aberration)
telescope of Schmidt Cassegrain design
9.25" Aplanatic EdgeHD aluminum Optical Tube Assembly
Model number: 91040-XLT
Aperture: 9.25 inches (235 mm)
Prime focal length at f/10: 2350 mm
Focal length with 0.7X focal reducer (f/7): 1644 mm
Resolution, (Rayleigh): 0.59 arc
second (Dawes Limit): 0.49 arc second
Light gathering capacity compared to the human eye: 1127 times
Limiting stellar magnitude: 14.4
Magnification at f/10 prime focus: about 47-times
Highest useful magnification with an eyepiece: about 500X
Secondary mirror central obstruction: about 85 mm or 3.5 inches (36%)
Built in field flattener lenses
Primary mirror support knobs and vented aluminum optical tube
Focus: moving the primary mirror with focus knob
Image circle diameter: 42 mm
Back focus: 146 mm
Includes one orange colored Losmandy-style dovetail plate for
mounting
Telescope length: 22-inches
Telescope diameter: 10.3-inches (262 mm)
Telescope weight: 21 pounds
Mount
iOptron GEM45
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Camera
Canon SL1 DSLR |