Product Description
The Celestron CGEM II 925HD telescope puts unique new 9.25" aperture aplanatic (free from coma andcorrected for spherical aberration) EdgeHD high definition/high contrast Schmidt optics on a precision Celestron CGEM II go-to German equatorial mount. The advanced EdgeHD optical design -Sky & Telescope Hot Product for 2010- has a dual-element field flattener lens made from premium Schott optical glass in its central baffle tube that reduces off-axis coma and produces aberration-free images across a wide 42mm image circle (as large as the diagonal of a 35mm negative or large format CCD chip and ideal for astrophotography). And those images will look superb through the supplied ultra-premium 82 deg; field 23mm 2" Celestron Axiom eyepiece.
In addition to reduced off-axis coma, the EdgeHD optical system delivers an astrograph-quality focal plane more than three times flatter than a standard Schmidt-Cassegrain telescope and dramatically flatter than competing coma-free designs. Stars are smaller and more concentrated, creating brighter images and allowing you to see down to a fainter magnitude than other equally-sized telescopes. You see visibly sharp and point-like stars to the very edges of some of the largest CCD and DSLR chips available today.
Tech Details
Aperture | 9.25" |
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Focal Length | 2350mm |
Focal Ratio | f/10 |
Heaviest Single Component | 21 |
Motorized Controls | Computerized GoTo |
Weight | 80 pounds |
Optical Coatings | XLT |
Resolution | .49 Arc Seconds |
Supplied Eyepiece | 23mm Luminos 2" |
Telescope Type | EdgeHD |
View Finder | 9x50mm |
Visual Limiting Magnitude | 14.4 |