{"product_id":"120-mm-aluminium-bahtinov-focusing-mask","title":"120 mm Aluminium Bahtinov Focusing Mask","description":"\u003cp\u003eAchieve repeatable focus for astrophotography by using the diffraction pattern from a precisely cut aluminium Bahtinov mask sized for approximately 120 mm observable diameter.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDiffraction-spike pattern makes focus error easy to see\u003c\/li\u003e\n\u003cli\u003eAluminium construction is durable and reusable\u003c\/li\u003e\n\u003cli\u003e120 mm size for compatible telescope apertures\u003c\/li\u003e\n\u003cli\u003eUseful for cameras, planetary imaging and deep-sky setup\u003c\/li\u003e\n\u003cli\u003eQuick visual method reduces focus guesswork\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px;border:1px solid #ddd\"\u003eType\u003c\/th\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd\"\u003eBahtinov focusing mask\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px;border:1px solid #ddd\"\u003eObserved diameter\u003c\/th\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd\"\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px;border:1px solid #ddd\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd\"\u003eAluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px;border:1px solid #ddd\"\u003eApplication\u003c\/th\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd\"\u003eAstronomical telescope focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:6px;border:1px solid #ddd\"\u003eCompatibility\u003c\/th\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd\"\u003eConfirm clear aperture and mounting range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003ePackage includes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOne 120 mm focusing mask\u003c\/li\u003e\n\u003cli\u003eMounting pads or screws shown\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility \u0026amp; safe use\u003c\/h2\u003e\u003cp\u003eMeasure the telescope's usable aperture and mounting location before ordering. This mask is not a solar filter and must never be used for direct Sun observation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFree shipping across Australia is included in the listed price.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Linein Astronomy","offers":[{"title":"Default Title","offer_id":54342146982252,"sku":"CT-526","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/4894\/5772\/files\/S5a77a2551b19494485a11415e1acda1cX.webp?v=1789020018","url":"https:\/\/linein.com.au\/products\/120-mm-aluminium-bahtinov-focusing-mask","provider":"Linein.com.au","version":"1.0","type":"link"}