{"product_id":"daystar-filters-sodium-quark-filter","title":"SODIUM Quark filter","description":"\u003cp\u003eThe Sodium D-Line Quark is a compact, all-in-one solar filter designed for refractor telescopes with focal ratios from f\/4 to f\/8. It transforms your telescope into a specialized instrument to explore the Sun's intricate details, including sunspots, granulation, and flare footprints, by isolating the bright Sodium D spectral line at 5890Å.\u003c\/p\u003e\r\n\u003cp\u003eIdeal for amateur astronomers seeking sharp, high-contrast solar views, this device simplifies setup by integrating multiple optical elements into a single eyepiece-sized unit that fits directly into your diagonal. Just add a standard eyepiece, power it up, and enjoy stunning solar observations.\u003c\/p\u003e\r\n\u003ch6\u003eOptimized Optical Design\u003c\/h6\u003e\r\n\u003cp\u003eThis Quark features a custom 4.2x telecentric barlow lens that enhances image flatness and sharpness specifically at the Sodium D wavelength. The integrated blocking filter and baffling system improve contrast, revealing fine solar features with remarkable clarity.\u003c\/p\u003e\r\n\u003ch6\u003eEffortless Integration\u003c\/h6\u003e\r\n\u003cp\u003eIts combined adapter, snout, and filter assembly eliminate the need for additional components, allowing quick insertion into 1.25\" or 2\" diagonals. The brass compression ring safeguards eyepieces, while the lightweight construction maintains optical balance.\u003c\/p\u003e\r\n\u003ch6\u003ePower Efficient and Portable\u003c\/h6\u003e\r\n\u003cp\u003eDesigned for low power consumption, the Quark runs off standard USB 5V power and includes an AC adapter with international plugs. An optional compact battery pack enables extended field use without tethering to mains power.\u003c\/p\u003e\r\n\u003ch6\u003eEnhanced Solar Phenomena Viewing\u003c\/h6\u003e\r\n\u003cp\u003eThe Sodium D-line reveals solar features that are brighter and easier to observe than those seen in Calcium or Hydrogen-alpha light. This includes high-resolution sunspot details and the early signatures of solar flares, providing a unique window into solar activity.\u003c\/p\u003e\r\n\u003ch6\u003eSafety and Compatibility\u003c\/h6\u003e\r\n\u003cp\u003eFor safe operation, the use of a suitable Energy Rejection Filter (ERF) is recommended, especially for larger apertures. This Quark is compatible with yellow glass ERFs but not with red glass variants, ensuring optimal spectral transmission.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable class=\"spec-table\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\r\n\u003ctd\u003eDSZSD\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eFilter Type\u003c\/th\u003e\r\n\u003ctd\u003eNarrowband Sodium D-Line\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eWavelength\u003c\/th\u003e\r\n\u003ctd\u003e5890 Å (D2 line)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eBandpass\u003c\/th\u003e\r\n\u003ctd\u003eApproximately 0.5 Å or narrower\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOptical Configuration\u003c\/th\u003e\r\n\u003ctd\u003eIntegrated 4.2X telecentric barlow lens, fully baffled\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eBlocking Filter Diameter\u003c\/th\u003e\r\n\u003ctd\u003e12 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eClear Filter Aperture\u003c\/th\u003e\r\n\u003ctd\u003e21 mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eInput Size\u003c\/th\u003e\r\n\u003ctd\u003e1.25\" or 2.0\" combo nosepiece with safety indent slot\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOutput Size\u003c\/th\u003e\r\n\u003ctd\u003eStandard 1.25\" eyepiece drawtube (optional 2\" holder available)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003ePower Requirements\u003c\/th\u003e\r\n\u003ctd\u003eUSB 5V, 1.5A; includes 90-240V AC adapter with international plugs\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eOptional Accessories\u003c\/th\u003e\r\n\u003ctd\u003e8-hour battery pack, T-mount and C-mount adapters\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eCompatibility\u003c\/th\u003e\r\n\u003ctd\u003eBest with f\/4 to f\/8 refractors; compatible with yellow glass ERFs\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eWarranty\u003c\/th\u003e\r\n\u003ctd\u003e5 years (US)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003cth\u003eStorage\u003c\/th\u003e\r\n\u003ctd\u003eIncludes twist-case for protection\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\n\n\u003ch2\u003eManuals \u0026amp; Documents\u003c\/h2\u003e\u003ch3\u003eManual\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/1-04-001-0048-01.pdf?v=1766965416\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan class=\"doc-icon\" aria-hidden=\"true\"\u003e📘\u003c\/span\u003e SODIUM Quark filter\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DayStar Filters","offers":[{"title":"Default Title","offer_id":45992305098951,"sku":"1-04-001-0048","price":1295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/9575\/6487\/files\/1-04-001-0048-01.jpg?v=1766965422","url":"https:\/\/snowflakeskies.com\/products\/daystar-filters-sodium-quark-filter","provider":"Snowflake Skies","version":"1.0","type":"link"}