{"title":"Focusers","description":"\u003c!-- TOP HALF --\u003e\n\u003cdiv style=\"font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;max-width:1200px;margin:18px auto 8px;padding:0 16px;color:#030B1C;line-height:1.6;box-sizing:border-box;\"\u003e\n\u003cdiv style=\"background:#F5F7FA;border:1px solid #ebeef3;border-left:4px solid #030B1C;border-radius:8px;padding:22px 26px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;box-sizing:border-box;\"\u003e\n\u003cdiv style=\"flex:1 1 360px;min-width:0;\"\u003e\n\u003cspan style=\"display:inline-block;background:rgba(114,148,186,0.15);color:#030B1C;font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:4px 10px;border-radius:3px;margin-bottom:10px;\"\u003eFocusers\u003c\/span\u003e\n\u003ch2 style=\"font-size:22px;font-weight:700;margin:0 0 8px;line-height:1.25;color:#030B1C;\"\u003eFocus is where the detail is\u003c\/h2\u003e\n\u003cp style=\"font-size:14.5px;line-height:1.55;color:#555;margin:0 0 14px;\"\u003eLunt focusers for solar telescopes — helical, rack-and-pinion, 10:1 dual-speed and Feather Touch. Not sure which fits? We will check for you.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;\"\u003e\n\u003ca href=\"#pps-focusers\" class=\"pps-top-btn pps-top-btn-primary\" style=\"display:inline-block;padding:9px 16px;border-radius:6px;font-size:13px;text-decoration:none;letter-spacing:0.2px;line-height:1;background:#030B1C;color:#fff;border:1px solid #030B1C;font-weight:700;\"\u003eBrowse the range\u003c\/a\u003e\n\u003ca href=\"\/pages\/contact-us\" class=\"pps-top-btn pps-top-btn-outline\" style=\"display:inline-block;padding:9px 16px;border-radius:6px;font-size:13px;text-decoration:none;letter-spacing:0.2px;line-height:1;background:#fff;color:#030B1C;border:1px solid #030B1C;font-weight:600;\"\u003eAsk a specialist\u003c\/a\u003e\n\u003ca href=\"tel:8555010541\" class=\"pps-top-btn pps-top-btn-outline\" style=\"display:inline-block;padding:9px 16px;border-radius:6px;font-size:13px;text-decoration:none;letter-spacing:0.2px;line-height:1;background:#fff;color:#030B1C;border:1px solid #030B1C;font-weight:600;\"\u003e+1 (855) 501-0541\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;gap:22px;flex-wrap:wrap;justify-content:center;flex-shrink:1;width:100%;max-width:100%;\"\u003e\n\u003cdiv style=\"text-align:center;padding:0 6px;flex:0 1 auto;min-width:90px;\"\u003e\n\u003cstrong style=\"display:block;font-size:22px;font-weight:800;color:#030B1C;line-height:1;margin-bottom:4px;\"\u003e2\u003c\/strong\u003e\u003cspan style=\"font-size:11px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase;color:#555;\"\u003eProducts\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;padding:0 6px;flex:0 1 auto;min-width:90px;\"\u003e\n\u003cstrong style=\"display:block;font-size:22px;font-weight:800;color:#030B1C;line-height:1;margin-bottom:4px;\"\u003e7\u003c\/strong\u003e\u003cspan style=\"font-size:11px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase;color:#555;\"\u003eFitments\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align:center;padding:0 6px;flex:0 1 auto;min-width:90px;\"\u003e\n\u003cstrong style=\"display:block;font-size:22px;font-weight:800;color:#030B1C;line-height:1;margin-bottom:4px;\"\u003e$85.99\u003c\/strong\u003e\u003cspan style=\"font-size:11px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase;color:#555;\"\u003eFrom\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!--PP_SPLIT--\u003e\n\u003cdiv class=\"pps-sf\"\u003e\n\u003cstyle\u003e\n  .pps-sf { --pps-accent:#030B1C; 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border-radius:8px; padding:0; transition:border-color 0.15s ease,box-shadow 0.15s ease; }\n  .pps-sf-faq details[open] { border-color:var(--pps-accent); box-shadow:0 6px 16px rgba(114,148,186,0.08); }\n  .pps-sf-faq summary { font-size:16px; font-weight:700; color:var(--pps-text); padding:16px 22px; cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:12px; }\n  .pps-sf-faq summary::-webkit-details-marker { display:none; }\n  .pps-sf-faq summary::after { content:\"+\"; color:var(--pps-accent); font-size:22px; font-weight:700; line-height:1; }\n  .pps-sf-faq details[open] summary::after { content:\"\\2212\"; }\n  .pps-sf-faq-body { padding:0 22px 18px; font-size:15px; line-height:1.65; }\n  .pps-sf-faq-body p { margin:0 0 12px; }\n  .pps-sf-faq-body p:last-child { margin-bottom:0; }\n  @media (max-width:1024px) {\n    .pps-sf-why { grid-template-columns:repeat(2,1fr); }\n    .pps-sf-peers-grid { grid-template-columns:repeat(2,1fr); }\n    .pps-sf-featured-grid-3 { grid-template-columns:repeat(2,1fr); }\n    .pps-sf-cap-grid { grid-template-columns:repeat(2,1fr); }\n    .pps-sf-types-grid { grid-template-columns:1fr; }\n  }\n  @media (max-width:768px) {\n    .pps-sf { padding:0 8px; }\n    .pps-sf-hero { grid-template-columns:1fr; gap:22px; padding:24px 0; }\n    .pps-sf-hero h2 { font-size:24px; }\n    .pps-sf-hero img { transform:none; margin-top:0; }\n    .pps-sf-why { grid-template-columns:1fr; gap:12px; }\n    .pps-sf-callout { grid-template-columns:1fr; text-align:center; }\n    .pps-sf-callout-badge { margin:0 auto; }\n    .pps-sf-cap { padding:22px; }\n    .pps-sf-cap-grid { grid-template-columns:1fr; }\n    .pps-sf-featured-grid-3 { grid-template-columns:1fr; gap:16px; }\n    .pps-sf-peers-grid { grid-template-columns:1fr; }\n  }\n\u003c\/style\u003e\n\u003csection class=\"pps-sf-hero\"\u003e\u003cdiv\u003e\n\u003cspan class=\"pps-sf-eyebrow\"\u003eFocusers\u003c\/span\u003e\u003ch2\u003eThe Part You Touch Every Single Time\u003c\/h2\u003e\n\u003cp\u003eA focuser is the one component you operate on every target, all night, in the dark, usually with gloves on. It is also the component most often left as whatever the telescope shipped with — which is a shame, because focus is where solar and planetary detail lives or dies.\u003c\/p\u003e\n\u003cp\u003eThese are Lunt's own focusers for their solar telescopes, from the compact 1.25-inch mini helical up to the two-inch Starlight Feather Touch draw tubes, plus the backing plate and focuser assembly for the LS152THa.\u003c\/p\u003e\n\u003cp\u003eIf you are not certain which fits your tube, \u003ca href=\"\/pages\/contact-us\"\u003eask us before you order\u003c\/a\u003e. Focuser fitment is specific and getting it wrong is an avoidable return.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/rack-pinion-focuser.jpg?v=1785527508\" alt=\"Lunt rack and pinion telescope focuser\" loading=\"lazy\"\u003e\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"pps-sf-why\"\u003e\u003cdiv class=\"pps-sf-why-card\"\u003e\n\u003cdiv class=\"pps-sf-why-icon\"\u003e1\u003c\/div\u003e\n\u003ch3\u003eFitment checked first\u003c\/h3\u003e\n\u003cp\u003eTell us your telescope and we will confirm which focuser mounts to it before the order goes out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-why-card\"\u003e\n\u003cdiv class=\"pps-sf-why-icon\"\u003e2\u003c\/div\u003e\n\u003ch3\u003eMade by the telescope builder\u003c\/h3\u003e\n\u003cp\u003eThese are Lunt's own focusers, designed around Lunt tubes rather than adapted to them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-why-card\"\u003e\n\u003cdiv class=\"pps-sf-why-icon\"\u003e3\u003c\/div\u003e\n\u003ch3\u003eCoarse and fine, in one\u003c\/h3\u003e\n\u003cp\u003eThe 10:1 dual-speed and Feather Touch options give you a fine-focus knob, which is what solar detail actually needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-why-card\"\u003e\n\u003cdiv class=\"pps-sf-why-icon\"\u003e4\u003c\/div\u003e\n\u003ch3\u003eFree shipping on all of it\u003c\/h3\u003e\n\u003cp\u003eEvery focuser on this page ships free within the United States.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"pps-sf-featured\"\u003e\u003cdiv class=\"pps-sf-featured-head\"\u003e\n\u003ch2\u003eEvery focuser we stock\u003c\/h2\u003e\n\u003cp\u003eTwo products, several fitments. Prices shown are the lowest variant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-featured-grid-3\"\u003e\n\u003ca class=\"pps-sf-feat-card\" href=\"\/products\/lunt-telescope-focuser\"\u003e\u003cdiv class=\"pps-sf-feat-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/rack-pinion-focuser.jpg?v=1785527508\" alt=\"Lunt Telescope Focuser\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-feat-body\"\u003e\n\u003cdiv class=\"pps-sf-feat-meta\"\u003eLunt Solar Systems\u003c\/div\u003e\n\u003ch3\u003eLunt Telescope Focuser\u003c\/h3\u003e\n\u003cp class=\"pps-sf-feat-desc\"\u003eMini helical, rack-and-pinion, 10:1 dual-speed and Feather Touch draw tube options.\u003c\/p\u003e\n\u003cdiv class=\"pps-sf-feat-price\"\u003eFrom $85.99\u003c\/div\u003e\n\u003cspan class=\"pps-sf-feat-cta\"\u003eView details →\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-feat-card\" href=\"\/products\/lunt-backing-plate-and-focuser-for-ls152tha\"\u003e\u003cdiv class=\"pps-sf-feat-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/LS152THaCakModule-lanczos3.jpg?v=1785529855\" alt=\"Lunt Backing Plate and Focuser for LS152THa\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-feat-body\"\u003e\n\u003cdiv class=\"pps-sf-feat-meta\"\u003eLunt Solar Systems\u003c\/div\u003e\n\u003ch3\u003eLunt Backing Plate and Focuser for LS152THa\u003c\/h3\u003e\n\u003cp class=\"pps-sf-feat-desc\"\u003eBacking plate and focuser assembly for the LS152THa 152mm solar telescope.\u003c\/p\u003e\n\u003cdiv class=\"pps-sf-feat-price\"\u003e$369.99\u003c\/div\u003e\n\u003cspan class=\"pps-sf-feat-cta\"\u003eView details →\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"pps-sf-faq\"\u003e\u003cdiv class=\"pps-sf-faq-head\"\u003e\n\u003ch2\u003eFocuser questions, answered\u003c\/h2\u003e\n\u003cp\u003eWhat we get asked before people order one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pps-sf-faq-list\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this focuser fit my telescope?\u003c\/summary\u003e\u003cdiv class=\"pps-sf-faq-body\"\u003e\u003cp\u003eLunt focusers are designed for Lunt tubes and the fitment is specific to the model and the backing plate on your scope. Send us your telescope model and we will confirm which one mounts to it before you order.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is 10:1 dual-speed and do I need it?\u003c\/summary\u003e\u003cdiv class=\"pps-sf-faq-body\"\u003e\u003cp\u003eA 10:1 focuser adds a second, geared knob that moves the draw tube a tenth as fast as the coarse knob. On the Sun and on planets, where the useful focus range is a fraction of a millimetre, it is the difference between finding focus and hunting past it repeatedly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHelical or rack-and-pinion?\u003c\/summary\u003e\u003cdiv class=\"pps-sf-faq-body\"\u003e\u003cp\u003eA helical focuser is compact, light and has no protruding knobs, which suits a small travel scope. A rack-and-pinion gives you more travel and a smoother feel under the weight of a diagonal and eyepiece.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy do these say Draft on some days?\u003c\/summary\u003e\u003cdiv class=\"pps-sf-faq-body\"\u003e\u003cp\u003eTwo of these are held while we confirm current specification and pricing directly with Lunt. Call us and we can quote and order either one for you in the meantime.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection class=\"pps-sf-peers\"\u003e\u003ch2\u003eWhere to go next\u003c\/h2\u003e\n\u003cp class=\"pps-sf-peers-sub\"\u003eA focuser is one part of the optical train. These pages cover the rest.\u003c\/p\u003e\n\u003cdiv class=\"pps-sf-peers-grid\"\u003e\n\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/solar-telescopes\"\u003e\u003ch3\u003eSolar Telescopes\u003c\/h3\u003e\n\u003cp\u003e13 purpose-built models\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/solar-filters\"\u003e\u003ch3\u003eSolar Filters\u003c\/h3\u003e\n\u003cp\u003e9 Lunt filters and etalons\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/cases-covers-and-shrouds\"\u003e\u003ch3\u003eCases, Covers \u0026amp; Shrouds\u003c\/h3\u003e\n\u003cp\u003e5 cases, soft and hard\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/mounting-hardware\"\u003e\u003ch3\u003eMounting Hardware\u003c\/h3\u003e\n\u003cp\u003eClamshells, dovetails, adapters\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/observation-accessories\"\u003e\u003ch3\u003eObservation Accessories\u003c\/h3\u003e\n\u003cp\u003eBinoviewers, diagonals, finders\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/collections\/power-and-cables\"\u003e\u003ch3\u003ePower \u0026amp; Cables\u003c\/h3\u003e\n\u003cp\u003eField power and controllers\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/pages\/how-to-choose-a-telescope\"\u003e\u003ch3\u003eBuyer's Guide\u003c\/h3\u003e\n\u003cp\u003eHow to choose your first telescope\u003c\/p\u003e\u003c\/a\u003e\u003ca class=\"pps-sf-peer-card\" href=\"\/pages\/contact-us\"\u003e\u003ch3\u003eTalk to us\u003c\/h3\u003e\n\u003cp\u003eWe answer the phone\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","products":[{"product_id":"lunt-telescope-focuser","title":"Lunt Telescope Focuser","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\u003ePrecision Focus Control For Lunt Solar Scopes\u003c\/h2\u003e\n        \u003cp\u003eLunt offers a focuser to match nearly every one of its solar telescopes, from a compact helical unit for small refractors up to a two inch dual speed rack and pinion. Choosing the right one comes down to the thread interface on your blocking filter or rear cell, the weight of the gear you plan to hang off it, and how fine you need the final adjustment to be.\u003c\/p\u003e\n    \u003cp\u003eThe 1.25 inch mini helical focuser threads T2 male to T2 female and gives ten millimeters of non rotating travel with a brass compression ring and a locking collar. The 1.25 inch rack and pinion steps up to a rotatable draw tube, half an inch of travel, positioning accuracy of plus or minus 0.002 inch, and a load rating of six to eight pounds.\u003c\/p\u003e\n    \u003cp\u003eFor imaging, the 10:1 versions matter. The 1.25 inch rack and pinion with 10:1 fine focus suits the LS40THa and LS50THa, while the two inch rack and pinion carries roughly 55 to 60 mm of travel, a 10:1 reduction, and works with ZWO EAF and Optec FocusLynx motor kits. At the top of the range, the SLF1.5 and SLF2.5 two inch draw tube focusers are Starlight Instruments Feather Touch units built in a Lunt specific configuration. Remember that any solar use still requires the telescope's own certified solar filtration.\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\/rack-pinion-focuser.jpg?v=1770221470\" alt=\"Lunt rack and pinion telescope focuser with black anodized body and dual focus knobs\"\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\u003eHelical Option\u003c\/b\u003e - the LSMINI\/1.25 gives ten millimeters of non rotating T2 to T2 travel with a brass compression ring and locking collar.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eRack And Pinion\u003c\/b\u003e - machined from aluminum and brass with a rotatable draw tube and backlash under 0.001 inch when properly adjusted.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eTen To One\u003c\/b\u003e - the 001-148 and the two inch 001-143 add 10:1 dual speed reduction for critical focus at high magnification.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eLoad Capacity\u003c\/b\u003e - six to eight pounds on the 1.25 inch rack and pinion, and 2.5 to 3.0 kg on the two inch version.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eStarlight Feather Touch\u003c\/b\u003e - the SLF1.5 and SLF2.5 two inch draw tube models are Starlight Instruments Feather Touch focusers supplied in a Lunt specific configuration.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eFeather Touch Upgrade\u003c\/b\u003e - the SLF2.5 delivers 2.5 inch of travel, 0.01 mm repeatability, and hardened stainless steel running surfaces.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eMotor Ready\u003c\/b\u003e - the two inch rack and pinion accepts ZWO EAF and Optec FocusLynx or ThirdLynx motor focus systems.\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\/2in-1hf-Feather-Touch-Focuser-Vertical-1.png?v=1743112811\" alt=\"Two inch Starlight Feather Touch focuser shown upright with 10 to 1 fine focus knob\"\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\u003eType\u003c\/td\u003e\n\u003ctd\u003eTelescope focusers, helical and rack and pinion, for Lunt solar and universal tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel \/ SKU\u003c\/td\u003e\n\u003ctd\u003eLSMINI\/1.25, 001-147, 001-148, 001-143, SLF1.5, SLF2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eLunt for the mini helical and rack and pinion models; Starlight Instruments (Feather Touch) in a Lunt specific configuration for SLF1.5 and SLF2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1.25 inch mini helical (LSMINI\/1.25)\u003c\/td\u003e\n\u003ctd\u003eT2 male to T2 female, 10 mm travel, non rotating, brass compression ring, locking collar\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1.25 inch rack and pinion (001-147)\u003c\/td\u003e\n\u003ctd\u003e0.5 inch draw tube travel, rotatable, accuracy plus or minus 0.002 inch, load 6 to 8 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e1.25 inch rack and pinion 10:1 (001-148)\u003c\/td\u003e\n\u003ctd\u003e10:1 dual speed fine focus, listed for LS40THa and LS50THa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e2 inch rack and pinion (001-143)\u003c\/td\u003e\n\u003ctd\u003eapproximately 55 to 60 mm travel, 10:1 reduction, M68 or M90 rear thread\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e2 inch Feather Touch, 1.5 inch travel (SLF1.5)\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e2 inch Feather Touch, 2.5 inch travel (SLF2.5)\u003c\/td\u003e\n\u003ctd\u003e2.5 inch travel, 0.01 mm repeatability, 52 mm threaded draw tube, lifts 2.5 kg or 5.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEyepiece side\u003c\/td\u003e\n\u003ctd\u003e2 inch compression ring with a 1.25 inch adapter included on the 001-143\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eCNC machined aluminum and brass; hardened stainless steel running parts on Feather Touch models\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMotor focus\u003c\/td\u003e\n\u003ctd\u003e001-143 compatible with ZWO EAF and Optec FocusLynx or ThirdLynx\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTelescope fit\u003c\/td\u003e\n\u003ctd\u003eSLF2.5 listed for LS130MT and LS152THa; 001-143 standard on 60MT, 80MT and 100MT\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBacklash\u003c\/td\u003e\n\u003ctd\u003eunder 0.001 inch on the 1.25 inch rack and pinion; 0.0 mm quoted for the Feather Touch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSolar safety\u003c\/td\u003e\n\u003ctd\u003efor solar use only behind the telescope's own certified solar filtration\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShipping weight\u003c\/td\u003e\n\u003ctd\u003e2.0 lb for LSMINI\/1.25, 001-147 and 001-143; 3.0 lb for SLF2.5; others Not published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years from date of purchase, original purchaser, manufacturing and workmanship defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\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":"1.25 inch Mini Focuser","offer_id":53917567025263,"sku":"LSMINI\/1.25","price":85.99,"currency_code":"USD","in_stock":true},{"title":"1.25 inch Rack and Pinion","offer_id":53917567058031,"sku":"001-147","price":169.99,"currency_code":"USD","in_stock":true},{"title":"1.25 inch Rack and Pinion 10:1","offer_id":53917567090799,"sku":"001-148","price":269.99,"currency_code":"USD","in_stock":true},{"title":"2 inch Rack and Pinion","offer_id":53917567123567,"sku":"001-143","price":219.99,"currency_code":"USD","in_stock":true},{"title":"2 inch with 1.5 inch Travel Draw Tube","offer_id":53917567156335,"sku":"SLF1.5","price":649.99,"currency_code":"USD","in_stock":true},{"title":"2 inch with 2.5 inch Travel Draw Tube","offer_id":53917567189103,"sku":"SLF2.5","price":669.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/rack-pinion-focuser.jpg?v=1785527508"},{"product_id":"lunt-backing-plate-and-focuser-for-ls152tha","title":"Lunt Backing Plate and Focuser for LS152THa","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\u003eRear Plate And Focuser For LS152THa Scopes\u003c\/h2\u003e\n        \u003cp\u003eThe LS152T\/BP\u0026amp;F is the backing plate and two inch Crayford focuser assembly for the Lunt LS152THa, the 152 mm hydrogen alpha solar telescope. The backing plate is the rear interface of the optical tube and the focuser mounts to it, so the two are supplied together as one part.\u003c\/p\u003e\n    \u003cp\u003eIts purpose is conversion. Remove the rear pressure tuned etalon section from the LS152THa and fit this plate and focuser in its place, and the same optical tube becomes a night time refractor. The Crayford is dual speed and takes two inch accessories, replacing the rack and pinion focuser the scope ships with.\u003c\/p\u003e\n    \u003cp\u003eThis is a mechanical assembly with no filtering function. The LS152THa is a dedicated solar telescope whose safety comes from its own etalon and blocking filter system, and this plate carries no solar filtration of its own. With the etalon section removed the tube is a night telescope only, so never aim it at the Sun without correct certified solar filtration fitted and verified.\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\/LS152THaCakModule-lanczos3.jpg?v=1743112825\" alt=\"Lunt LS152THa backing plate and two inch Crayford focuser; Lunt notes the frame also shows the optional CaK module, the diagonal and blue eyepiece barrel, which is not included\"\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\u003eMatched Assembly\u003c\/b\u003e - backing plate and focuser supplied together as the rear end unit for the LS152THa.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eSingle Telescope Fit\u003c\/b\u003e - specified for the Lunt LS152THa 152 mm hydrogen alpha solar telescope rather than the wider range.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eRear Interface\u003c\/b\u003e - the plate forms the mounting face at the back of the optical tube that the focuser bolts to.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eDual Speed Crayford\u003c\/b\u003e - a two inch Crayford style focuser with dual speed fine focus in place of the stock rack and pinion.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eMechanical Only\u003c\/b\u003e - no optical elements and no filtering role, so it does not alter the telescope's solar safety chain.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eDay To Night Conversion\u003c\/b\u003e - swaps in where the pressure tuned etalon section comes out, turning the solar scope into a night time refractor.\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\/LS152THaCakModule-lanczos3.jpg?v=1743112825\" alt=\"Backing plate and Crayford focuser assembly for the Lunt LS152THa, shown with the optional CaK module that is sold separately\"\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\u003eType\u003c\/td\u003e\n\u003ctd\u003eBacking plate and focuser assembly for a dedicated solar telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel \/ SKU\u003c\/td\u003e\n\u003ctd\u003eLS152T\/BP\u0026amp;F\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTelescope fit\u003c\/td\u003e\n\u003ctd\u003eLunt LS152THa, 152 mm hydrogen alpha solar telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAssembly contents\u003c\/td\u003e\n\u003ctd\u003ebacking plate and focuser supplied together\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocuser type\u003c\/td\u003e\n\u003ctd\u003eTwo inch Crayford style, dual speed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFocuser travel\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDrawtube size\u003c\/td\u003e\n\u003ctd\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMounting thread\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFine focus ratio\u003c\/td\u003e\n\u003ctd\u003eDual speed fine focus, exact ratio not published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eLoad capacity\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMaterials and finish\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMotor focus compatibility\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSolar safety\u003c\/td\u003e\n\u003ctd\u003eReplaces the rear pressure tuned etalon section, which converts the telescope for night time use; it is a mechanical part only and carries no solar filtration of its own\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShipping weight\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years from date of purchase, original purchaser, manufacturing and workmanship defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\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":"Backing Plate and Focuser","offer_id":53917598941295,"sku":"LS152T\/BP\u0026F","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/LS152THaCakModule-lanczos3.jpg?v=1785529855"}],"url":"https:\/\/telescopedepot.com\/collections\/focusers.oembed","provider":"Telescope Depot","version":"1.0","type":"link"}