Thread: Celestron's new EdgeHD Optics scopes
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Old 11-05-2010, 04:35 PM
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Moon (James)
This sentence is false

Moon is offline 		 
Join Date: Oct 2008
Location: Melbourne
Posts: 1,158
Maybe you are right.
FOV (degrees) = 57.3 * Sensor Size (mm) / focal length (mm)
= 0.568 degrees / 34.1 arc min

Plate solve of the M51 image says 21.53 x 23.97 arcminutes

James
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