{"id":15008575324320,"title":"Astromania Bahtinov Mask Focusing Mask for Telescopes - FM100mm for a Tube Outer Diameter (OD) from 105mm-150mm - can be Mounted with The Brass Screws Inside or Outside The drawtube For Outer Diameter from 105mm-150mm","handle":"astromania-bahtinov-mask-focusing-mask-for-telescopes-fm100mm-for-a-tube-outer-diameter-od-from-105mm-150mm-can-be-mounted-with-the-brass-screws-inside-or-outside-the-drawtube-for-outer-diameter-from-105mm-150mm","description":"\u003ch3\u003eAstromania Bahtinov Mask Focusing Mask for Telescopes - FM100mm for a Tube Outer Diameter (OD) from 105mm-150mm - can be Mounted with The Brass Screws Inside or Outside The drawtube\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eBahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task; the best focus for your telescope quickly and easily\u003c\/li\u003e\n \u003cli\u003eSuitable for use on all types of telescope; they are made from precision laser cut enforced plexiglass that is stiff and long lasting; they will never be brittle in the cold; unlike some other masks which are made from normal plastics\u003c\/li\u003e\n \u003cli\u003eThe masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect valued telescope surface; mask remains centered since 3-post mounting; while fitting a wider range of telescopes\u003c\/li\u003e\n \u003cli\u003eMade from 2mm thick laser cut plexiglass and securing screws are capped with soft plastic so that do not damage telescope; They have adjustment latitude of about 105-150mm that adjustable to fit optical tubes unlike masks which only fit one telescope\u003c\/li\u003e\n \u003cli\u003ePlease be assured these focusing masks will work excellently for both reflectors and refractors with whatever focal length; all you need to do is to measure telescope tube size and choose right size of mask contact us if not sure where to measure\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2025-02-04T11:57:49+11:00","created_at":"2025-01-27T16:55:33+11:00","vendor":"Astromania","type":"Eyepieces","tags":["electronics_best_sellers_Jan2025"],"price":16800,"price_min":16800,"price_max":16800,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":52221489479840,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B01MEGIA85","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Astromania Bahtinov Mask Focusing Mask for Telescopes - 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FM100mm for a Tube Outer Diameter (OD) from 105mm-150mm - can be Mounted with The Brass Screws Inside or Outside The drawtube\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eBahtinov masks take the guesswork out of focusing and even get over the seeing conditions as it is a mathematical type approach to the task; the best focus for your telescope quickly and easily\u003c\/li\u003e\n \u003cli\u003eSuitable for use on all types of telescope; they are made from precision laser cut enforced plexiglass that is stiff and long lasting; they will never be brittle in the cold; unlike some other masks which are made from normal plastics\u003c\/li\u003e\n \u003cli\u003eThe masks grip the telescope tube gently but firmly with three metal posts which have non-scratching silicon sleeves to protect valued telescope surface; mask remains centered since 3-post mounting; while fitting a wider range of telescopes\u003c\/li\u003e\n \u003cli\u003eMade from 2mm thick laser cut plexiglass and securing screws are capped with soft plastic so that do not damage telescope; They have adjustment latitude of about 105-150mm that adjustable to fit optical tubes unlike masks which only fit one telescope\u003c\/li\u003e\n \u003cli\u003ePlease be assured these focusing masks will work excellently for both reflectors and refractors with whatever focal length; all you need to do is to measure telescope tube size and choose right size of mask contact us if not sure where to measure\u003c\/li\u003e\n \u003c\/ul\u003e"}