British Astronomical Association

Supporting amateur astronomers since 1890

Bahtinov mask suitable for 10″ reflector

› Forums › For Sale / Wants / Giveaway › Bahtinov mask suitable for 10″ reflector

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  • 29 December 2020 at 9:49 am #574846
    Roger Dymock
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    Free but please make a donation to the BAA

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