{"product_id":"lunt-60mm-ha-etalon-filter-with-b3400-for-2-focuser","title":"Lunt 60mm Ha Etalon Filters","description":"\u003ch2 data-start=\"0\" data-end=\"57\" style=\"text-align: center;\"\u003eLunt 60mm H-Alpha Etalon Filters\u003c\/h2\u003e\n\u003ch2 data-start=\"0\" data-end=\"57\" style=\"text-align: center;\"\u003ewith Blocking Filters\u003c\/h2\u003e\n\u003cul data-start=\"59\" data-end=\"1244\"\u003e\n\u003cli data-start=\"59\" data-end=\"199\"\u003e\n\u003cp data-start=\"61\" data-end=\"199\"\u003eTurn your favorite refractor into a \u003cstrong data-start=\"97\" data-end=\"130\"\u003ehigh-contrast solar telescope\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=\"200\" data-end=\"315\"\u003e\n\u003cp data-start=\"202\" data-end=\"315\"\u003e\u003cstrong data-start=\"202\" data-end=\"232\"\u003eFront-mounted 60 mm etalon\u003c\/strong\u003e (no central obstruction) for crisp, even illumination across the full solar disk\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"316\" data-end=\"456\"\u003e\n\u003cp data-start=\"318\" data-end=\"456\"\u003e\u003cstrong data-start=\"318\" data-end=\"350\"\u003eIntegrally tuned, tilt-tuned\u003c\/strong\u003e design delivers an estimated \u003cstrong data-start=\"380\" data-end=\"391\"\u003e\u0026lt;0.70 Å\u003c\/strong\u003e bandpass for rich surface detail and dramatic limb prominences\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"457\" data-end=\"607\"\u003e\n\u003cp data-start=\"459\" data-end=\"607\"\u003e\u003cstrong data-start=\"459\" data-end=\"482\"\u003eDouble-stack ready:\u003c\/strong\u003e add a second etalon to tighten the bandpass to \u003cstrong data-start=\"530\" data-end=\"542\"\u003e~\u0026lt;0.50 Å\u003c\/strong\u003e (scope-dependent) for ultra-fine structure and higher contrast\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"608\" data-end=\"761\"\u003e\n\u003cp data-start=\"610\" data-end=\"761\"\u003ePick the \u003cstrong data-start=\"619\" data-end=\"646\"\u003eblocking filter package\u003c\/strong\u003e that fits your scope and focuser size: from \u003cstrong data-start=\"691\" data-end=\"699\"\u003eB600\u003c\/strong\u003e for short focal lengths to \u003cstrong data-start=\"727\" data-end=\"736\"\u003eB3400\u003c\/strong\u003e for longer instruments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"762\" data-end=\"908\"\u003e\n\u003cp data-start=\"764\" data-end=\"908\"\u003e\u003cstrong data-start=\"764\" data-end=\"785\"\u003eRetrofit-friendly\u003c\/strong\u003e (adapters required): designed for daytime use on customer-supplied refractors and easily removable for nighttime viewing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"909\" data-end=\"1032\"\u003e\n\u003cp data-start=\"911\" data-end=\"1032\"\u003eBuilt for \u003cstrong data-start=\"921\" data-end=\"943\"\u003evisual and imaging\u003c\/strong\u003e—choose a larger blocking filter for longer focal lengths to keep the full disk in-band\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1033\" data-end=\"1144\"\u003e\n\u003cp data-start=\"1035\" data-end=\"1144\"\u003eShips in a rugged \u003cstrong data-start=\"1053\" data-end=\"1092\"\u003ealuminum hard case with fitted foam\u003c\/strong\u003e—protects your investment at home and in the field\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1145\" data-end=\"1244\"\u003e\n\u003cp data-start=\"1147\" data-end=\"1244\"\u003e\u003cstrong data-start=\"1147\" data-end=\"1161\"\u003eImportant:\u003c\/strong\u003e A \u003cstrong data-start=\"1164\" data-end=\"1188\"\u003eLunt blocking filter\u003c\/strong\u003e must be used with all Lunt H-alpha filters at all times\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"1246\" data-end=\"1262\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul data-start=\"1263\" data-end=\"2043\"\u003e\n\u003cli data-start=\"1263\" data-end=\"1307\"\u003e\n\u003cp data-start=\"1265\" data-end=\"1307\"\u003e\u003cstrong data-start=\"1265\" data-end=\"1282\"\u003eFilter Model:\u003c\/strong\u003e LS60FHa H-Alpha Etalon\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1308\" data-end=\"1368\"\u003e\n\u003cp data-start=\"1310\" data-end=\"1368\"\u003e\u003cstrong data-start=\"1310\" data-end=\"1331\"\u003eOptical Aperture:\u003c\/strong\u003e \u003cstrong data-start=\"1332\" data-end=\"1341\"\u003e60 mm\u003c\/strong\u003e (no central obstruction)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1369\" data-end=\"1413\"\u003e\n\u003cp data-start=\"1371\" data-end=\"1413\"\u003e\u003cstrong data-start=\"1371\" data-end=\"1399\"\u003eBandpass (single stack):\u003c\/strong\u003e \u003cstrong data-start=\"1400\" data-end=\"1411\"\u003e\u0026lt;0.70 Å\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1414\" data-end=\"1502\"\u003e\n\u003cp data-start=\"1416\" data-end=\"1502\"\u003e\u003cstrong data-start=\"1416\" data-end=\"1444\"\u003eBandpass (double stack):\u003c\/strong\u003e \u003cstrong data-start=\"1445\" data-end=\"1457\"\u003e~\u0026lt;0.50 Å\u003c\/strong\u003e (with additional LS60FHa; scope-dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1503\" data-end=\"1527\"\u003e\n\u003cp data-start=\"1505\" data-end=\"1527\"\u003e\u003cstrong data-start=\"1505\" data-end=\"1516\"\u003eTuning:\u003c\/strong\u003e \u003cstrong data-start=\"1517\" data-end=\"1525\"\u003eTilt\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1528\" data-end=\"1605\"\u003e\n\u003cp data-start=\"1530\" data-end=\"1605\"\u003e\u003cstrong data-start=\"1530\" data-end=\"1547\"\u003eFocal Length:\u003c\/strong\u003e Customer telescope (select blocking filter accordingly)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1606\" data-end=\"1943\"\u003e\n\u003cp data-start=\"1608\" data-end=\"1649\"\u003e\u003cstrong data-start=\"1608\" data-end=\"1647\"\u003eBlocking Filter Options \u0026amp; Guidance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1652\" data-end=\"1943\"\u003e\n\u003cli data-start=\"1652\" data-end=\"1719\"\u003e\n\u003cp data-start=\"1654\" data-end=\"1719\"\u003e\u003cstrong data-start=\"1654\" data-end=\"1662\"\u003eB600\u003c\/strong\u003e – up to \u003cstrong data-start=\"1671\" data-end=\"1681\"\u003e540 mm\u003c\/strong\u003e focal length (1.25\" or 2\" diagonal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1722\" data-end=\"1791\"\u003e\n\u003cp data-start=\"1724\" data-end=\"1791\"\u003e\u003cstrong data-start=\"1724\" data-end=\"1733\"\u003eB1200\u003c\/strong\u003e – up to \u003cstrong data-start=\"1742\" data-end=\"1753\"\u003e1080 mm\u003c\/strong\u003e focal length (1.25\" or 2\" diagonal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1794\" data-end=\"1863\"\u003e\n\u003cp data-start=\"1796\" data-end=\"1863\"\u003e\u003cstrong data-start=\"1796\" data-end=\"1805\"\u003eB1800\u003c\/strong\u003e – up to \u003cstrong data-start=\"1814\" data-end=\"1825\"\u003e1620 mm\u003c\/strong\u003e focal length (1.25\" or 2\" diagonal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1866\" data-end=\"1943\"\u003e\n\u003cp data-start=\"1868\" data-end=\"1943\"\u003e\u003cstrong data-start=\"1868\" data-end=\"1877\"\u003eB3400\u003c\/strong\u003e – up to \u003cstrong data-start=\"1886\" data-end=\"1897\"\u003e3060 mm\u003c\/strong\u003e focal length (\u003cstrong data-start=\"1912\" data-end=\"1935\"\u003e2\" straight-through\u003c\/strong\u003e tube)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1944\" data-end=\"2009\"\u003e\n\u003cp data-start=\"1946\" data-end=\"2009\"\u003e\u003cstrong data-start=\"1946\" data-end=\"1958\"\u003eStorage:\u003c\/strong\u003e Aluminum finished \u003cstrong data-start=\"1977\" data-end=\"1990\"\u003ehard case\u003c\/strong\u003e with fitted foam\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2010\" data-end=\"2043\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2043\"\u003e\u003cstrong data-start=\"2012\" data-end=\"2023\"\u003eWeight:\u003c\/strong\u003e \u003cstrong data-start=\"2024\" data-end=\"2043\"\u003e~3 lb (≈1.5 kg)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 data-start=\"2045\" data-end=\"2065\"\u003eWhat’s in the Box?\u003c\/h1\u003e\n\u003cul data-start=\"2066\" data-end=\"2304\"\u003e\n\u003cli data-start=\"2066\" data-end=\"2114\"\u003e\n\u003cp data-start=\"2068\" data-end=\"2114\"\u003e\u003cstrong data-start=\"2068\" data-end=\"2112\"\u003eLunt LS60FHa 60 mm H-Alpha Etalon Filter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2115\" data-end=\"2236\"\u003e\n\u003cp data-start=\"2117\" data-end=\"2236\"\u003e\u003cstrong data-start=\"2117\" data-end=\"2150\"\u003eSelected Lunt Blocking Filter\u003c\/strong\u003e (B600 \/ B1200 \/ B1800 in 1.25\" or 2\" diagonal, or \u003cstrong data-start=\"2201\" data-end=\"2210\"\u003eB3400\u003c\/strong\u003e in 2\" straight-through)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2237\" data-end=\"2280\"\u003e\n\u003cp data-start=\"2239\" data-end=\"2280\"\u003e\u003cstrong data-start=\"2239\" data-end=\"2261\"\u003eAluminum hard case\u003c\/strong\u003e with fitted foam\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2281\" data-end=\"2304\"\u003e\n\u003cp data-start=\"2283\" data-end=\"2304\"\u003eBasic documentation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2306\" data-end=\"2409\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cem data-start=\"2306\" data-end=\"2409\" data-is-last-node=\"\"\u003eNote: Adapters are required to fit the etalon to your refractor and are typically ordered separately.\u003c\/em\u003e\u003c\/p\u003e","brand":"Lunt Solar Systems","offers":[{"title":"with B1800 for 1.25\" Focuser","offer_id":50995126042944,"sku":"LS60FHa1\/ B1800","price":2595.0,"currency_code":"USD","in_stock":true},{"title":"with B1800 for 2\" Focuser","offer_id":50995126075712,"sku":"LS60FHa2\/ B1800","price":2595.0,"currency_code":"USD","in_stock":true},{"title":"with B1200 for 1.25\" Focuser","offer_id":50995126108480,"sku":"LS60FHa1\/ B1200","price":2295.0,"currency_code":"USD","in_stock":true},{"title":"with B1200 for 2\" Focuser","offer_id":50995126141248,"sku":"LS60FHa2\/ B1200","price":2295.0,"currency_code":"USD","in_stock":true},{"title":"with B600 for 1.25\" Focuser","offer_id":50995126174016,"sku":"LS60FHa1\/ B600","price":2195.0,"currency_code":"USD","in_stock":true},{"title":"with B600 for 2\" Focuser","offer_id":50995126206784,"sku":"LS60FHa2\/ B600","price":2195.0,"currency_code":"USD","in_stock":true},{"title":"for double stacking all LS60T models including LS60MT","offer_id":50995126239552,"sku":"LS60FHa","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/Double-Stack-Filter-60F-Lunt-Solar-Telescope.jpg?v=1756153877","url":"https:\/\/astroworldtelescopes.com\/products\/lunt-60mm-ha-etalon-filter-with-b3400-for-2-focuser","provider":"Astroworld Telescopes","version":"1.0","type":"link"}