{"product_id":"lunt-ls40tha-40mm-h-alpha-solar-telescope","title":"Lunt LS40THa 40mm 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\u003eGrab And Go Hydrogen Alpha Solar Viewing\u003c\/h2\u003e\n        \u003cp\u003eThe Lunt LS40THa is the smallest aperture telescope in the Lunt dedicated solar line, built around a 40 mm custom doublet optimized for the 656 nm hydrogen alpha wavelength. At 400 mm focal length and f\/10, it delivers a solar disk of roughly 4.0 mm at prime focus, which suits both relaxed visual sessions and imaging with a small sensor.\u003c\/p\u003e\n    \u003cp\u003eTuning is handled by tilting the internal dedicated etalon, which shifts the passband instantly so you can move between prominences on the limb and structure on the face of the disk. Single stack bandpass sits below 0.45 Angstrom, and adding a double stack module narrows that to below 0.29 Angstrom for higher contrast on filaments and active regions.\u003c\/p\u003e\n    \u003cp\u003eChoose a 5 mm, 6 mm or 12 mm blocking filter and either the 1.25 inch mini helical focuser or a Feather Touch upgrade, depending on the eyepieces and cameras you plan to use. A built in TeleVue Sol Searcher makes acquisition quick, and the mounting foot lets you drop the tube onto a light photo tripod in seconds.\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\/lunt-40mm-s_470a1751-4fd8-4559-a091-d093c00a9178.png?v=1743113328\" alt=\"Lunt LS40THa 40mm dedicated hydrogen alpha solar telescope optical tube with mounting foot\"\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\u003eDedicated Optics\u003c\/b\u003e - a 40 mm custom doublet with ion assist ultra-narrowband AR coating, optimized specifically for 656 nm.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eTilt Tuning\u003c\/b\u003e - an internal dedicated etalon tuned by tilt, giving instant doppler shifting across the solar disk.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eNarrow Bandpass\u003c\/b\u003e - below 0.45 Angstrom single stack, and below 0.29 Angstrom once a double stack module is added.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eBlocking Filter Choice\u003c\/b\u003e - 5 mm, 6 mm and 12 mm diagonal blocking filters are offered, each with a 6 Angstrom bandpass.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eBuilt In Sun Finder\u003c\/b\u003e - a TeleVue Sol Searcher is integrated into the tube, so pointing takes seconds without sighting along the barrel.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eTravel Ready\u003c\/b\u003e - a 6 pound shipping weight, a mounting foot and a fitted foam box make this an easy telescope to carry.\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\/lunt-40mm-1_53771ed5-933a-43a0-ab26-b063d5835843.png?v=1743113327\" alt=\"Rear view of the Lunt LS40THa showing the 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\u003eLS40THa\/B600, LS40THa\/B600R\u0026amp;P, LS40THa\/B600R\u0026amp;P10-1, LS40THa\/B1200, LS40THa\/B1200R\u0026amp;P, LS40THa\/B1200R\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\u003e40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e400 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/10\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003eLess than 0.45 Angstrom single stack, less than 0.29 Angstrom double stack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003e5 mm, 6 mm, 12 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\u003eTilt tuned internal dedicated etalon, 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\u003eMounting foot\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSun Finder\u003c\/td\u003e\n\u003ctd\u003eTeleVue Sol Searcher, built in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSolar Image Size\u003c\/td\u003e\n\u003ctd\u003eApproximately 4.0 mm at prime focus\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\u003e6.0 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, 5 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\/Lunt_40mm_Manual.pdf?v=1748274316\" 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":53917524852847,"sku":"LS40THa\/B600","price":895.99,"currency_code":"USD","in_stock":true},{"title":"B600 Blocking Filter \/ Rack and Pinion","offer_id":53917524885615,"sku":"LS40THa\/B600R\u0026P","price":995.99,"currency_code":"USD","in_stock":true},{"title":"B600 Blocking Filter \/ 10:1 Rack and Pinion","offer_id":53917524918383,"sku":"LS40THa\/B600R\u0026P10-1","price":1095.99,"currency_code":"USD","in_stock":true},{"title":"B1200 Blocking Filter \/ Helical Focuser","offer_id":53917524951151,"sku":"LS40THa\/B1200","price":995.99,"currency_code":"USD","in_stock":true},{"title":"B1200 Blocking Filter \/ Rack and Pinion","offer_id":53917524983919,"sku":"LS40THa\/B1200R\u0026P","price":1095.99,"currency_code":"USD","in_stock":true},{"title":"B1200 Blocking Filter \/ 10:1 Rack and Pinion","offer_id":53917525016687,"sku":"LS40THa\/B1200R\u0026P10-1","price":1195.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/lunt-40mm-s_470a1751-4fd8-4559-a091-d093c00a9178.png?v=1785527445","url":"https:\/\/telescopedepot.com\/products\/lunt-ls40tha-40mm-h-alpha-solar-telescope","provider":"Telescope Depot","version":"1.0","type":"link"}