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you will find this is true in both form and its function
to help block out unwanted stray light
which is directly connected to the 76EDPH focuser
This Celestron Aluminum Dew Shield with Cover Cap fits all 9
the controller may be operating near its power limit
StarField Bahtinov Mask - 80 mm - FM-80 Celestron Equatorial Telescopes you will find this isThis StarField Bahtinov Mask is sized for 80 mm telescopes and fits dew shields with an outside diameter of 87 mm to 105 mm. While basic, often home made focus masks have been used for quite some time, the Bahtinov mask, with it's distinctive pattern, is unique. Invented by Russian amateur astronomer Pavel Bahtinov, this mask has quickly become the astro imager's choice for fine focusing a telescope. To use, place the Bahtinov mask in front of the
