{"product_id":"lunt-ls50tha-50mm-h-alpha-solar-telescope","title":"Lunt LS50THa 50mm H-Alpha Solar Telescope","description":"\u003cdiv class=\"kt-page\"\u003e\n\n\u003cstyle\u003e\n.kt-page{--kt-primary:#030B1C;--kt-accent:#2E7FBF;max-width:1100px;margin:0 auto;font-family:inherit;}\n.kt-page.kt-page--wide{max-width:1600px;}\n.kt-page .kt-hero{display:flex;align-items:center;gap:40px;margin-bottom:40px;}\n.kt-page .kt-hero-copy{flex:1 1 55%;}\n.kt-page .kt-hero-img{flex:1 1 40%;text-align:center;}\n.kt-page .kt-sq{width:100%;max-width:420px;aspect-ratio:1\/1;margin:0 auto;background:#ffffff;border-radius:6px;display:flex;align-items:center;justify-content:center;overflow:hidden;}\n.kt-page .kt-sq img{max-width:92%;max-height:92%;width:auto;height:auto;object-fit:contain;}\n.kt-page .kt-hero-copy h2{font-size:26px;margin-bottom:14px;}\n.kt-page .kt-hero-copy p{font-size:16px;line-height:1.6;margin-bottom:14px;}\n.kt-page .kt-features{display:flex;align-items:flex-start;gap:40px;margin:40px 0;}\n.kt-page .kt-features-copy{flex:1 1 55%;}\n.kt-page .kt-features-img{flex:1 1 40%;text-align:center;}\n.kt-page .kt-section-heading{font-size:21px;display:inline-block;padding-bottom:8px;border-bottom:2px solid var(--kt-accent);margin-bottom:18px;}\n.kt-page .kt-feature-list{list-style:none;margin:0;padding:0;}\n.kt-page .kt-feature-list li{font-size:16px;line-height:1.5;margin-bottom:12px;padding-left:26px;position:relative;}\n.kt-page .kt-feature-list li:before{content:\"\\2713\";color:var(--kt-accent);font-weight:bold;position:absolute;left:0;}\n.kt-page .kt-feature-list b{color:#222;}\n.kt-page .kt-specs-wrap{box-sizing:border-box;}\n.kt-page .kt-specs{display:table !important;width:100% !important;border-collapse:collapse;margin:40px 0;font-size:15px;}\n.kt-page .kt-specs th,.kt-page .kt-specs td{border:2px solid #000;padding:10px 12px;text-align:left;}\n.kt-page .kt-specs th{background:var(--kt-primary) !important;color:#fff !important;font-size:16px;}\n.kt-page .kt-specs tr:nth-child(even){background:#f2f2f2;}\n.kt-page .kt-specs tr:nth-child(odd){background:#ffffff;}\n.kt-page .kt-cta{text-align:center;margin:40px 0;font-size:18px;font-weight:bold;}\n.kt-page .kt-cta-buttons{display:flex;justify-content:center;gap:16px;margin-top:16px;flex-wrap:wrap;}\n.kt-page .kt-cta-buttons a{display:inline-block;padding:12px 26px;border:2px solid var(--kt-primary);border-radius:4px;color:var(--kt-primary);text-decoration:none;font-weight:bold;font-size:15px;transition:all .15s ease;}\n.kt-page .kt-cta-buttons a:hover{background:var(--kt-primary);color:#fff;}\n.kt-page .kt-manuals a{display:block;color:var(--kt-primary);font-weight:bold;font-size:30px;text-align:left;text-decoration:none;margin-bottom:10px;}\n.kt-page .kt-manuals a:hover{color:var(--kt-accent);}\n@media (max-width:768px){\n  .kt-page .kt-hero,.kt-page .kt-features{flex-direction:column;}\n  .kt-page .kt-hero-img img,.kt-page .kt-features-img img{max-width:400px;}\n  .kt-page .kt-hero-copy p,.kt-page .kt-features-copy p{font-size:17px;}\n  .kt-page .kt-cta-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px;}\n  .kt-page .kt-cta-buttons a:nth-child(3){grid-column:1 \/ span 2;}\n  .kt-page .kt-manuals a{font-size:24px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"kt-hero\"\u003e\n  \u003cdiv class=\"kt-hero-copy\"\u003e\n    \u003ch2\u003ePressure Tuned Solar Detail From 50mm\u003c\/h2\u003e\n        \u003cp\u003eThe Lunt LS50THa pairs a 50 mm doublet optimized at 656 nm with an internal dedicated etalon, so it arrives as a complete hydrogen alpha telescope with nothing else to source before first light. A 350 mm focal length at f\/7 keeps the tube short enough to travel with while still resolving prominences on the limb and the larger active regions on the disk.\u003c\/p\u003e\n    \u003cp\u003eTuning uses the Lunt Pressure Tuner, a barometric system that shifts the passband by changing air pressure inside the etalon housing rather than by tilting glass. That keeps the image evenly tuned from one edge of the disk to the other, and the adjustment is fine enough to bring up filaments and surface texture that a coarse tilt would move straight past.\u003c\/p\u003e\n    \u003cp\u003eSingle stack bandpass sits below 0.6 Angstrom, and a double stack module takes it below 0.4 Angstrom when you want the highest surface contrast. A CNC clamshell with a Vixen style dovetail bolts to most small mounts, and the 4 mm blocking filter diagonal with the 1.25 inch mini helical focuser accepts standard eyepieces and small cameras.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kt-hero-img\"\u003e\n    \u003cdiv class=\"kt-sq\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0615\/8273\/7521\/files\/LS50THa_1500_4.jpg?v=1743113333\" alt=\"Lunt LS50THa 50mm hydrogen alpha solar telescope with pressure tuner and clamshell mount\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"kt-features\"\u003e\n  \u003cdiv class=\"kt-features-copy\"\u003e\n    \u003ch3 class=\"kt-section-heading\"\u003eKey Features\u003c\/h3\u003e\n    \u003cul class=\"kt-feature-list\"\u003e\n      \u003cli\u003e\n\u003cb\u003ePressure Tuning\u003c\/b\u003e - the Lunt Pressure Tuner shifts the passband barometrically for even tuning right across the disk.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eDedicated Etalon\u003c\/b\u003e - an internal dedicated etalon in UV grade fused silica, centered on 656.28 nm.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eBandpass\u003c\/b\u003e - under 0.6 Angstrom single stack, dropping under 0.4 Angstrom with a double stack module fitted.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eCompact Focal Ratio\u003c\/b\u003e - f\/7 at 350 mm keeps the tube short and pairs well with short focal length eyepieces.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eClamshell Mounting\u003c\/b\u003e - a CNC clamshell and Vixen style dovetail drop onto most small equatorial or alt-azimuth mounts.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eBlocking Filter Options\u003c\/b\u003e - a 4 mm diagonal ships as standard with a 6 mm diagonal available, both at 6 Angstrom bandpass.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kt-features-img\"\u003e\n    \u003cdiv class=\"kt-sq\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0615\/8273\/7521\/files\/LS50THa_4_2000.jpg?v=1743113333\" alt=\"Close view of the Lunt LS50THa pressure tuner, blocking filter diagonal and helical focuser\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"kt-specs-wrap\"\u003e\n\u003ctable class=\"kt-specs\"\u003e\n  \u003ctr\u003e\u003cth colspan=\"2\"\u003eSpecifications\u003c\/th\u003e\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel \/ SKU\u003c\/td\u003e\n\u003ctd\u003eLS50THa\/B600PT, LS50THa\/B600R\u0026amp;P, LS50THa\/B600R\u0026amp;P10-1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eDedicated H-alpha refractor, custom doublet optimized at 656 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003eLess than 0.6 Angstrom single stack, less than 0.4 Angstrom double stack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003e4 mm and 6 mm diagonal, 6 Angstrom bandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eLunt 1.25 inch mini helical standard, Feather Touch optional\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eLunt Pressure Tuner, Doppler True barometric pressure tuning, instant doppler shifting\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEtalon Wavelength\u003c\/td\u003e\n\u003ctd\u003e656.28 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEtalon Material\u003c\/td\u003e\n\u003ctd\u003eUV grade fused silica\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eObjective Coating\u003c\/td\u003e\n\u003ctd\u003eIon assist ultra-narrowband AR at 656 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eCNC clamshell and Vixen style dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSun Finder\u003c\/td\u003e\n\u003ctd\u003eTeleVue Sol Searcher compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eBox with fitted foam, hard case optional\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.0 lb shipping weight\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWhat's Included\u003c\/td\u003e\n\u003ctd\u003eOptical tube with internal etalon and pressure tuner, 4 mm blocking filter, Lunt 1.25 inch mini helical focuser, box with fitted foam\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years against manufacturing and workmanship defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"kt-manuals\"\u003e\n\u003ch6\u003eManuals\u003c\/h6\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0615\/8273\/7521\/files\/LS50THaPT_Manual_-_REV_04-2016.pdf?v=1748274315\" style=\"display:block;color:var(--kt-primary);font-weight:bold;font-size:30px;text-align:left;text-decoration:none;margin-bottom:10px;\" target=\"_blank\" rel=\"noopener\"\u003eProduct Manual (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cp class=\"kt-cta\"\u003e\n  Talk to a Specialist\n  \u003cspan class=\"kt-cta-buttons\"\u003e\n    \u003ca href=\"\/pages\/contact\" style=\"display:inline-block;padding:12px 26px;border:2px solid var(--kt-primary);border-radius:4px;color:var(--kt-primary);text-decoration:none;font-weight:bold;\"\u003eContact Us\u003c\/a\u003e\n    \u003ca href=\"mailto:sales@telescopedepot.com\" style=\"display:inline-block;padding:12px 26px;border:2px solid var(--kt-primary);border-radius:4px;color:var(--kt-primary);text-decoration:none;font-weight:bold;\"\u003eEmail a Specialist\u003c\/a\u003e\n    \u003ca href=\"\/pages\/shipping\" style=\"display:inline-block;padding:12px 26px;border:2px solid var(--kt-primary);border-radius:4px;color:var(--kt-primary);text-decoration:none;font-weight:bold;\"\u003eShipping Info\u003c\/a\u003e\n  \u003c\/span\u003e\n\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Lunt Solar Systems","offers":[{"title":"B600 Blocking Filter \/ Helical Focuser","offer_id":53917546643567,"sku":"LS50THa\/B600PT","price":995.99,"currency_code":"USD","in_stock":true},{"title":"B600 Blocking Filter \/ Rack and Pinion","offer_id":53917546676335,"sku":"LS50THa\/B600R\u0026P","price":1095.99,"currency_code":"USD","in_stock":true},{"title":"B600 Blocking Filter \/ 10:1 Rack and Pinion","offer_id":53917546709103,"sku":"LS50THa\/B600R\u0026P10-1","price":1195.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/LS50THa_1500_4.jpg?v=1785527446","url":"https:\/\/telescopedepot.com\/products\/lunt-ls50tha-50mm-h-alpha-solar-telescope","provider":"Telescope Depot","version":"1.0","type":"link"}