{"product_id":"lunt-50mm-compact-ha-etalon-filter-for-double-stacking-compatible-with-ls50tha","title":"Lunt 50mm Compact Ha Etalon Filters","description":"\u003ch2 data-start=\"0\" data-end=\"43\" style=\"text-align: center;\"\u003eLunt 50mm Compact H-Alpha Etalon Filters\u003c\/h2\u003e\n\u003cul data-start=\"45\" data-end=\"1133\"\u003e\n\u003cli data-start=\"45\" data-end=\"201\"\u003e\n\u003cp data-start=\"47\" data-end=\"201\"\u003eTurn your \u003cstrong data-start=\"57\" data-end=\"78\"\u003eLunt ED refractor\u003c\/strong\u003e into a high-contrast \u003cstrong data-start=\"100\" data-end=\"131\"\u003edaytime H-alpha solar scope\u003c\/strong\u003e, then remove the filter and head back to night observing in minutes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"202\" data-end=\"329\"\u003e\n\u003cp data-start=\"204\" data-end=\"329\"\u003e\u003cstrong data-start=\"204\" data-end=\"234\"\u003e50 mm front-mounted etalon\u003c\/strong\u003e with \u003cstrong data-start=\"240\" data-end=\"266\"\u003eno central obstruction\u003c\/strong\u003e for evenly illuminated full-disk views and crisp limb detail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"330\" data-end=\"486\"\u003e\n\u003cp data-start=\"332\" data-end=\"486\"\u003e\u003cstrong data-start=\"332\" data-end=\"364\"\u003eIntegrally tuned, tilt-tuned\u003c\/strong\u003e design delivers an estimated \u003cstrong data-start=\"394\" data-end=\"405\"\u003e\u0026lt;0.70 Å\u003c\/strong\u003e bandpass—reveals prominences, filaments, plages, and fine photospheric texture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"487\" data-end=\"637\"\u003e\n\u003cp data-start=\"489\" data-end=\"637\"\u003e\u003cstrong data-start=\"489\" data-end=\"512\"\u003eDouble-stack ready:\u003c\/strong\u003e add a second etalon to tighten the bandpass to \u003cstrong data-start=\"560\" data-end=\"572\"\u003e~\u0026lt;0.50 Å\u003c\/strong\u003e (scope-dependent) for even higher contrast and finer structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"638\" data-end=\"806\"\u003e\n\u003cp data-start=\"640\" data-end=\"806\"\u003e\u003cstrong data-start=\"640\" data-end=\"657\"\u003eSafety first:\u003c\/strong\u003e a \u003cstrong data-start=\"660\" data-end=\"705\"\u003ematching Lunt Blocking Filter is required\u003c\/strong\u003e for use—choose the BF that fits your focal length and workflow (larger BF recommended for imaging)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"807\" data-end=\"933\"\u003e\n\u003cp data-start=\"809\" data-end=\"933\"\u003eBuilt for \u003cstrong data-start=\"819\" data-end=\"850\"\u003eLunt ED80 f\/7 and ED102 f\/7\u003c\/strong\u003e platforms; quick \u003cstrong data-start=\"868\" data-end=\"884\"\u003eday-to-night\u003c\/strong\u003e swap keeps your refractor versatile year-round\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"934\" data-end=\"1039\"\u003e\n\u003cp data-start=\"936\" data-end=\"1039\"\u003e\u003cstrong data-start=\"936\" data-end=\"955\"\u003eTravel-friendly\u003c\/strong\u003e: compact, ~\u003cstrong data-start=\"967\" data-end=\"975\"\u003e2 lb\u003c\/strong\u003e assembly ships in a protective aluminum case with fitted foam\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1040\" data-end=\"1133\"\u003e\n\u003cp data-start=\"1042\" data-end=\"1133\"\u003eEngineered by Lunt to deliver \u003cstrong data-start=\"1072\" data-end=\"1095\"\u003eon-band reliability\u003c\/strong\u003e and seamless fit with Lunt refractors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"1135\" data-end=\"1151\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul data-start=\"1152\" data-end=\"2034\"\u003e\n\u003cli data-start=\"1152\" data-end=\"1197\"\u003e\n\u003cp data-start=\"1154\" data-end=\"1197\"\u003e\u003cstrong data-start=\"1154\" data-end=\"1164\"\u003eModel:\u003c\/strong\u003e LS50FHa (front H-alpha etalon)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1198\" data-end=\"1258\"\u003e\n\u003cp data-start=\"1200\" data-end=\"1258\"\u003e\u003cstrong data-start=\"1200\" data-end=\"1221\"\u003eOptical Aperture:\u003c\/strong\u003e \u003cstrong data-start=\"1222\" data-end=\"1231\"\u003e50 mm\u003c\/strong\u003e (no central obstruction)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1259\" data-end=\"1303\"\u003e\n\u003cp data-start=\"1261\" data-end=\"1303\"\u003e\u003cstrong data-start=\"1261\" data-end=\"1289\"\u003eBandpass (single stack):\u003c\/strong\u003e \u003cstrong data-start=\"1290\" data-end=\"1301\"\u003e\u0026lt;0.70 Å\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1304\" data-end=\"1392\"\u003e\n\u003cp data-start=\"1306\" data-end=\"1392\"\u003e\u003cstrong data-start=\"1306\" data-end=\"1334\"\u003eBandpass (double stack):\u003c\/strong\u003e \u003cstrong data-start=\"1335\" data-end=\"1347\"\u003e~\u0026lt;0.50 Å\u003c\/strong\u003e (with additional LS50FHa; scope-dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1393\" data-end=\"1436\"\u003e\n\u003cp data-start=\"1395\" data-end=\"1436\"\u003e\u003cstrong data-start=\"1395\" data-end=\"1406\"\u003eTuning:\u003c\/strong\u003e \u003cstrong data-start=\"1407\" data-end=\"1415\"\u003eTilt\u003c\/strong\u003e (integrally tuned)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1437\" data-end=\"1507\"\u003e\n\u003cp data-start=\"1439\" data-end=\"1507\"\u003e\u003cstrong data-start=\"1439\" data-end=\"1463\"\u003eIntended Telescopes:\u003c\/strong\u003e \u003cstrong data-start=\"1464\" data-end=\"1483\"\u003eLunt ED80 (f\/7)\u003c\/strong\u003e, \u003cstrong data-start=\"1485\" data-end=\"1505\"\u003eLunt ED102 (f\/7)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1508\" data-end=\"1757\"\u003e\n\u003cp data-start=\"1510\" data-end=\"1541\"\u003e\u003cstrong data-start=\"1510\" data-end=\"1539\"\u003eBlocking Filter Guidance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1544\" data-end=\"1757\"\u003e\n\u003cli data-start=\"1544\" data-end=\"1569\"\u003e\n\u003cp data-start=\"1546\" data-end=\"1569\"\u003e\u003cstrong data-start=\"1546\" data-end=\"1554\"\u003eB600\u003c\/strong\u003e – Visual use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1572\" data-end=\"1604\"\u003e\n\u003cp data-start=\"1574\" data-end=\"1604\"\u003e\u003cstrong data-start=\"1574\" data-end=\"1583\"\u003eB1200\u003c\/strong\u003e – Visual \u0026amp; Imaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1607\" data-end=\"1757\"\u003e\n\u003cp data-start=\"1609\" data-end=\"1757\"\u003e\u003cstrong data-start=\"1609\" data-end=\"1618\"\u003eB1800\u003c\/strong\u003e – Imaging \u0026amp; Visual (more field for longer focal lengths)\u003cbr data-start=\"1675\" data-end=\"1678\"\u003e\u003cem data-start=\"1680\" data-end=\"1755\"\u003eLarger BF recommended for imaging due to added in-focus\/back-focus needs.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1758\" data-end=\"1823\"\u003e\n\u003cp data-start=\"1760\" data-end=\"1823\"\u003e\u003cstrong data-start=\"1760\" data-end=\"1772\"\u003eStorage:\u003c\/strong\u003e Aluminum finished \u003cstrong data-start=\"1791\" data-end=\"1804\"\u003ehard case\u003c\/strong\u003e with fitted foam\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1824\" data-end=\"1857\"\u003e\n\u003cp data-start=\"1826\" data-end=\"1857\"\u003e\u003cstrong data-start=\"1826\" data-end=\"1837\"\u003eWeight:\u003c\/strong\u003e \u003cstrong data-start=\"1838\" data-end=\"1855\"\u003e~2 lb (≈1 kg)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1858\" data-end=\"2034\"\u003e\n\u003cp data-start=\"1860\" data-end=\"2034\"\u003e\u003cstrong data-start=\"1860\" data-end=\"1883\"\u003eFit Recommendation:\u003c\/strong\u003e Lunt advises pairing Lunt filters with \u003cstrong data-start=\"1923\" data-end=\"1942\"\u003eLunt telescopes\u003c\/strong\u003e to ensure proper fit and performance; adapter plates for third-party scopes are not offered\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"2036\" data-end=\"2056\"\u003eWhat’s in the Box?\u003c\/h1\u003e\n\u003cul data-start=\"2057\" data-end=\"2187\"\u003e\n\u003cli data-start=\"2057\" data-end=\"2119\"\u003e\n\u003cp data-start=\"2059\" data-end=\"2119\"\u003e\u003cstrong data-start=\"2059\" data-end=\"2103\"\u003eLunt LS50FHa 50 mm H-Alpha Etalon Filter\u003c\/strong\u003e (front-mount)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2120\" data-end=\"2163\"\u003e\n\u003cp data-start=\"2122\" data-end=\"2163\"\u003e\u003cstrong data-start=\"2122\" data-end=\"2144\"\u003eAluminum hard case\u003c\/strong\u003e with fitted foam\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2164\" data-end=\"2187\"\u003e\n\u003cp data-start=\"2166\" data-end=\"2187\"\u003eBasic documentation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2189\" data-end=\"2332\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cem data-start=\"2189\" data-end=\"2332\" data-is-last-node=\"\"\u003eBlocking filter required for operation—\u003cstrong data-start=\"2229\" data-end=\"2248\"\u003esold separately\u003c\/strong\u003e. Choose \u003cstrong data-start=\"2257\" data-end=\"2265\"\u003eB600\u003c\/strong\u003e, \u003cstrong data-start=\"2267\" data-end=\"2276\"\u003eB1200\u003c\/strong\u003e, or \u003cstrong data-start=\"2281\" data-end=\"2290\"\u003eB1800\u003c\/strong\u003e to match your focal length and use case.\u003c\/em\u003e\u003c\/p\u003e","brand":"Lunt Solar Systems","offers":[{"title":"for double stacking Compatible with LS50THa","offer_id":50995225264448,"sku":"LS50C","price":1099.0,"currency_code":"USD","in_stock":true},{"title":"with B600 Blocking Filter and Rack \u0026 Pinion Focuser","offer_id":50995225297216,"sku":"LS50THa\/B600R\u0026P","price":1095.0,"currency_code":"USD","in_stock":true},{"title":"with B600 Blocking Filter Feather Touch Focuser","offer_id":50995225329984,"sku":"LS50THa\/B600PT FT","price":1234.0,"currency_code":"USD","in_stock":true},{"title":"with B600 Blocking Filter Helical Focuser","offer_id":50995225362752,"sku":"LS50THa\/B600PT","price":995.0,"currency_code":"USD","in_stock":true},{"title":"with B400 Blocking Filter and Rack \u0026 Pinion Focuser","offer_id":50995225395520,"sku":"LS50THa\/B400R\u0026P","price":1073.0,"currency_code":"USD","in_stock":true},{"title":"with B400 Blocking Filter Feather Touch Focuser","offer_id":50995225428288,"sku":"LS50C-6","price":1180.0,"currency_code":"USD","in_stock":true},{"title":"with B400 Blocking Filter Helical Focuser","offer_id":50995225461056,"sku":"LS50C-7","price":1007.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/Double-Stack-Filter-50F-Vertical_76b40b01-7cff-46b0-85ae-596b5273910e.png?v=1756160205","url":"https:\/\/astroworldtelescopes.com\/products\/lunt-50mm-compact-ha-etalon-filter-for-double-stacking-compatible-with-ls50tha","provider":"Astroworld Telescopes","version":"1.0","type":"link"}