2.5\" Edmund Telescope Newtonian Mirror & Secondary - Great Value Hard to Find For Sale
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2.5\" Edmund Telescope Newtonian Mirror & Secondary - Great Value Hard to Find:
$8.95
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2.5\" Primary & Secondary - Hard to Find!
Slight blem - may have a small scratch or chip that won\'t affect the operation of the mirrorNew old stock from Edmund Corp. 2.5\" f/10 high quality spherical telescope mirror. A 2.5\" mirror at f/10 in a spherical curve is well within the 1/4 wave Dawes limit for optimum resolution, so you get a planetary quality mirror capable of 60x per inch of magnification with clear views! Aluminum first surface coated. Plate glass material, but in a mirror this small, Pyrex is not needed as cool down times are about 5 minutes typically. Secondary mirror of 1/2 minor axis\" x 3/4\" is also included at a great price!
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