Bahtinov Mask for Celestron Omni AZ 102 Refractor telescope (+ dust cap )
Description
Bahtinov mask that friction fits (with spring grabbers) the end of a Celestron Omni AZ 102 Refractor (4") telescope. [Or any other round opening between 112mm-118mm in size] The "dust cap" or replacement end cap is just the mask without the slots cut out of it.
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