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SKU : ART-TRI-BATHINOV-90
Product Details
Artesky Bahtinov Masks are an excellent choice for astronomers and astrophotographers needing pinpoint focus every time. This mask is fitted for telescopes with apertures no larger than 90 mm
included items
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United StatesI have yet to figure out how to install it on my ETX90 scope. Its diameter is larger than my scope face. So i don’t know how to install it other than using tape temporarily. Any instructions or guidance?
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