{"product_id":"daystar-uv-ir-cut-2-dsiuv2","title":"Daystar UV\/IR Cut 2\" (DSIUV2)","description":"\u003ch2\u003eDaystar UV\/IR Cut 2\"\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Daystar UV\/IR Cut 2″ reduces the heat load on your filter assembly by absorbing or reflecting UV and\/or I light and transmitting light in the desired visual spectrum. \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"page\" title=\"Page 1\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"layoutArea\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"column\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTo prevent damage, we recommend using an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. This can be a UV\/IR cut filter mounted before the diagonal, or a full aperture red or yellow glass ERF mounted in front of the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWhen to use a Front Mounted ERF\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTelescopes upon which we do not recommend UV\/IR cut filters:\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSome larger aperture (130mm and higher) and\/or all-day tracking applications where the Quark \/ Quantum are susceptible to overheating.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSCT telescopes\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePetzval refractors (a concentrated beam will fall upon unknown coatings)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCertain older oil spaced triplets prior to adoption of UV resistant oils.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAny instrument for which the owner is not comfortable with the UV\/IR cut solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThese users should consider front mount energy rejection.  This is accomplished using a colored glass optical window before the objective or corrector plate.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA refractor with an aperture of 80mm or less doesn’t require energy rejection.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis is because the amount of energy collected with 80mm of light just isn’t enough to do damage to your system. 80mm is the size of the palm of your hand.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYour hand doesn’t spontaneously ignite in the sun – and it’s not transparent like your refractor’s objective is.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAll of your lenses are transparent and do not absorb energy.  A diagonal and the front elements of the QUARK are \u0026gt;99% reflective and doesn’t either.  All of that energy is reflected back out the front of your telescope unmagnified.  Unless your telescope is made of paper, then it is not at-risk for damage with an aperture of 80mm or less.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan\u003eThread: M48x0.75 (2″)\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003e2″ UV\/IR Cut Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003eFilter Box\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDaystar 1-Years Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cbr\u003e","brand":"Daystar","offers":[{"title":"Default Title","offer_id":43125748465893,"sku":"DAY-DSIUV2","price":175.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/daystar-uvir-cut-2-dsiuv2-astronomy-plus_f2db9bfc-2f06-416f-957c-9d8e040b87e2.jpg?v=1690484517","url":"https:\/\/istronomyplus.com\/products\/daystar-uv-ir-cut-2-dsiuv2","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}