Sky Mentor 11" Flexible Dew Shield - DEW11 Solar Telescopes 3 presents an image with

3 presents an image with virtually no spherical abberation

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17 mm Focal Length

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Sky Mentor 11" Flexible Dew Shield - DEW11 Solar Telescopes 3 presents an image withSky Mentor 11" Flexible Dew Shield Prevents dew from forming on your Schmidt Cassegrain corrector lens Fits 11 optical tubes Felt lined interior surface captures moisture and reduces stray light Rolls up for easy transport The Sky Mentor Dew Shield is an essential accessory that protects your optical tube in the field. It prevents excess moisture in the air from forming condensation on the corrector lens. A dew shield also helps block stray light from