{"title":"Daystar Quark \u0026 Solar Filters | H-Alpha Imaging | Dark Clear Skies UK","description":"\u003ch2\u003eSky Rover Reducers \u0026amp; Flatteners\u003c\/h2\u003e\u003cp\u003eSky Rover reducers and field flatteners are designed to improve image quality by correcting field curvature and optimising focal ratios for astrophotography.\u003c\/p\u003e","products":[{"product_id":"daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence","title":"Daystar Quark Gemini H-alpha Filter (Chromosphere and Prominence)","description":"\u003ch1 data-mce-fragment=\"1\"\u003e\u003c\/h1\u003e\n\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-tldfw-79elbk h-full\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-tldfw-1n7m0yu\"\u003e\n\u003cdiv class=\"flex flex-col text-sm gizmo:pb-9 dark:bg-gray-800 gizmo:dark:bg-transparent\"\u003e\n\u003cdiv data-testid=\"conversation-turn-3\" class=\"w-full text-token-text-primary border-b border-black\/10 gizmo:border-0 dark:border-gray-900\/50 gizmo:dark:border-0 bg-gray-50 gizmo:bg-transparent dark:bg-[#444654] gizmo:dark:bg-transparent\"\u003e\n\u003cdiv class=\"p-4 gizmo:py-2 justify-center text-base md:gap-6 md:py-6 m-auto\"\u003e\n\u003cdiv class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 gizmo:gap-3 gizmo:md:px-5 gizmo:lg:px-1 gizmo:xl:px-5 md:max-w-2xl lg:max-w-[38rem] gizmo:md:max-w-3xl gizmo:lg:max-w-[40rem] gizmo:xl:max-w-[48rem] xl:max-w-3xl } group final-completion\"\u003e\n\u003cdiv class=\"relative flex w-[calc(100%-50px)] flex-col gizmo:w-full lg:w-[calc(100%-115px)] agent-turn\"\u003e\n\u003cdiv class=\"flex-col gap-1 md:gap-3\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col max-w-full gap-3 gizmo:gap-0\"\u003e\n\u003cdiv class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" data-message-id=\"5af1117a-c314-4fda-8579-c4e440ad151b\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\u003cp\u003eIntroducing the Daystar Quark Gemini H Alpha Filter: The Ultimate Solar Observing Tool\u003c\/p\u003e\n\u003cp\u003eUnlock the full potential of your solar observing experience with the Daystar Quark Gemini H Alpha Filter. This revolutionary filter is designed to elevate your solar observations to new heights, offering a seamless transition between the Prominence and Chromosphere views at the slide of a button. Say goodbye to cumbersome equipment swapping and refocusing – this all-in-one tool has you covered.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstant Slide-Action Switching:\u003c\/strong\u003e With the Daystar Quark Gemini, you can effortlessly switch between two distinct views – the broad-stroked prominences of wider bandpass and the high-contrast narrow bandpass. Simply push the slider arm from side to side, just like in an eye exam, to explore the mesmerizing details of our sun.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Usage:\u003c\/strong\u003e Whether you're an avid imager looking to capture comparison images or an outreach astronomer eager to demonstrate surface structures and prominences, this filter is your ideal companion. Dive into the fascinating science of solar wing shift with ease.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eSpecifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety First:\u003c\/strong\u003e The Daystar Quark Gemini is a fully self-contained solar filter, ensuring the safety of both your eyes and imaging equipment. It blocks off-band X-rays up to 2 microns and features a 22mm clear eyepiece aperture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTelescope Compatibility:\u003c\/strong\u003e This versatile filter fits seamlessly into 1.25\" and 2\" telescope drawtubes, making it perfect for use with refractor telescopes ranging from F\/5 to F\/8. It comes standard with a 1.25\" female eyepiece drawtube, and optional T-adapter, C-mount adapter, or 2\" drawtube adapters are available.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Imaging:\u003c\/strong\u003e The Daystar Quark Gemini includes a built-in 4.3X telecentric barlow optimized for the Hydrogen Alpha 656nm wavelength, ensuring stunning image quality. It also boasts TWO separate, independent Fabry Perot etalons with different FWHM bandpass ranges:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne etalon with a 0.5Å FWHM bandpass or narrower.\u003c\/li\u003e\n\u003cli\u003eOne etalon with a 0.6Å FWHM bandpass or wider. Paired etalons are meticulously matched to maximize the effects of wide vs. narrow bandpass observations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePowerful Performance:\u003c\/strong\u003e This filter requires a 2.0Amp 5VDC 10-watt electrical power source for optimal functioning. It includes a wall adapter compatible with 110-240VAC, complete with international power plugs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSecure Storage:\u003c\/strong\u003e Your Daystar Quark Gemini Filter arrives boxed in an environmentally controlled pelican-style case, ensuring its safety during storage and transport.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This versatile filter seamlessly integrates with all visual and imaging adapters in the Quark product line, making it a valuable addition to your astronomy equipment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExperience the sun like never before with the Daystar Quark Gemini H Alpha Filter. Elevate your solar observations and capture the beauty of our nearest star with unparalleled ease and precision. Order yours today and embark on a journey of solar discovery.\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-4.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-4.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-4.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-4.webp\"\u003e\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-5.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-5.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-5.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-5.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eQuark Gemini offers BOTH \"prominence\" or \"chromosphere\" all-in-one.\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e~ Enjoy both Chromosphere and Prominence together\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong data-mce-fragment=\"1\"\u003efor £1995\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFor use on refractors of F\/4 to F\/8**, the user needn't worry about configurations. Just insert in your diagonal, add an eyepiece and view.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/patent_pending.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/patent_pending.webp\"\u003eThe\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cem data-mce-fragment=\"1\"\u003epatent pending\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/em\u003eQUARK* contains a custom Daystar Instruments 4.2X telecentric barlow lens fully optimized in coatings and optical design specifically for the Hydrogen Alpha wavelength. This highly specialized telecentric lens offers superior field flatness.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eExact filter bandpass will vary based on final telescope application, so QUARK* assemblies are qualified with one element to show best prominences and the other to show best surface contrast (chromosphere).  No specific FWHM bandpass is designated.  \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOutreach astronomers can use the prom vs chrom switch to demonstrate each feature with an extra teaching moment about wing shift going on in fast moving prominences.  Imagers can use the same switch to create comparison images without the need to exchange equipment or refocus with short lived features.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe fully optimized design eliminates the need for any adapters.  It's all combined in one lightweight eyepiece sized device. The new, compact design configuration eliminates unnecessary components, weight and associated costs. We even reduced power consumption, so the Quark* can now operate all day off a small, palm-sized optional battery pack. Baffles have been added to increase contrast and AR coatings are optimized for the 656nm wavelength.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cem data-mce-fragment=\"1\"\u003e*The QUARK* assembly is a product of DayStar Instruments, using DayStar Filters' Fabry Perot etalon technology.\u003cbr data-mce-fragment=\"1\"\u003e** QUARK Filters may be used at shorter and longer focal ratios than recommended. F-ratios of F\/9 and higher will offer a dimmer visual view and may only be bright enough for photographic applications. F-ratios of less than F\/4 will be brighter, but also widen the effective FWHM bandpass performance of the QUARK filter.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eContains TWO separate Fabry Perot Etalon elements which may be shifted safely via push-pull into view.  \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eA hand-matched pair of narrower (\u0026lt;0.5Å FWHM) and wider (\u0026gt;0.6Å FWHM) etalons shall be\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.daystarfilters.com\/Quark\/QuarkUniformity.shtml\" data-mce-fragment=\"1\" data-mce-href=\"http:\/\/www.daystarfilters.com\/Quark\/QuarkUniformity.shtml\"\u003eSE grade\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eand independently tuneable.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eShips with male combo 1.25\" or 2.0\" combo eyepiece snouts\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cem data-mce-fragment=\"1\"\u003ewith safety indent\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/em\u003eslot directly into your diagonal\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eShips with standard 1.25 female eyepiece drawtube output. Optional interchangeable 2\" and SCT accessories available.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBrass compression ring to protect eyepiece.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eUses USB power, 5v 2.0amp\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIncludes 90-240VAC wall adapter with international plug adapters.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTwo tuning knobs allow wing shifting +\/- 0.5à with detents at every 0.1Ã\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLED indicator for power, warming, ready, fault\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e5 year warranty,\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOptional 8-hour battery pack available.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIntegrated, fully baffled 2 element telecentric 4.2X barlow optimized for 656nm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eIntegrated 12mm blocking filter\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e22mm clear filter aperture\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBest performance with F\/4 - F\/8 refractors\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFull disk viewing possible on refractors up to ~450mm focal length refractors\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNo aperture limitations. May be used on larger refractors for higher magnification views\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eShips in watertight pelican style equipment case for dust \u0026amp; humidity-free storage.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNot suited for off-axis application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Daystar Quark Gemini comes in a nice, heavy duty carrying case:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0a.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0a.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0a.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0a.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eYou will find a USB cable, multi-country PSU, instruction Manual and free eclipse glasses inside the case\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-0.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-1.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-1.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-1.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-1.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-2.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-2.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-2.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/DSZ4G-daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-2.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Daystar","offers":[{"title":"Default Title","offer_id":43113611329713,"sku":"DSZ4G","price":2399.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/daystar-quark-gemini-h-alpha-filter-chromosphere-and-prominence-628677.webp?v=1718364232"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/collections\/daystar-770971.jpg?v=1718364015","url":"https:\/\/www.darkclearskies.co.uk\/collections\/daystar-quark-solar-filters-h-alpha-imaging-dark-clear-skies-uk.oembed","provider":"Dark Clear Skies ","version":"1.0","type":"link"}