{"product_id":"lunt-terrestrial-star-diagonal","title":"Lunt Terrestrial Star Diagonal","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\u003eErect Image Views For Daytime Terrestrial Use\u003c\/h2\u003e\n        \u003cp\u003eThese are 1.25 inch prism diagonals that Lunt supplies for daytime and terrestrial work rather than for solar observing. The 45 degree unit uses a full size Amici prism to give a fully corrected image, left to right and up and down, which is what you want for reading distant signs, watching birds, or scanning a landscape through a refractor.\u003c\/p\u003e\n    \u003cp\u003eThe 45 degree angle also sits at a comfortable head position for horizontal targets, where a 90 degree diagonal forces you to crane your neck. The GSOPD90 covers the other case: a conventional 90 degree prism for night time astronomy and for terrestrial targets high above the horizon, giving an up and down correct, left to right reversed view.\u003c\/p\u003e\n    \u003cp\u003eBoth use full size prisms so the field stays fully illuminated and free of vignetting. Neither of these diagonals is a solar filter and neither makes a telescope safe for the Sun. Point a telescope at the Sun only when the correct certified solar filtration is fitted at the front of the instrument or in a dedicated Lunt solar system.\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\/odia-gs-pd45-2_2_1_2.jpg?v=1743113335\" alt=\"Lunt 1.25 inch 45 degree erect image star diagonal for terrestrial viewing\"\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\u003eFully Corrected Image\u003c\/b\u003e - the GSOPD45 Amici prism returns a left to right and up and down correct view for terrestrial targets.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eComfortable Angle\u003c\/b\u003e - 45 degrees puts your head in a natural position when the target sits near the horizon.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eClassic Ninety Degree\u003c\/b\u003e - the GSOPD90 prism suits night time astronomy and high elevation daytime targets.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eFull Size Prism\u003c\/b\u003e - the prism is large enough to illuminate the whole field, so there is no vignetting at the edges.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eStandard Fitting\u003c\/b\u003e - 1.25 inch barrel and 1.25 inch eyepiece holder work with refractor and Cassegrain telescopes.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eSolar Warning\u003c\/b\u003e - neither diagonal filters sunlight, so the telescope must supply its own certified solar filtration.\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\/90-degree.jpg?v=1743113335\" alt=\"Lunt 1.25 inch 90 degree prism star diagonal shown from the side\"\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\u003e1.25 inch prism star diagonals for terrestrial and night time use\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel \/ SKU\u003c\/td\u003e\n\u003ctd\u003eGSOPD45, GSOPD90\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGSOPD45 angle\u003c\/td\u003e\n\u003ctd\u003e45 degrees, erect image Amici prism\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGSOPD45 image orientation\u003c\/td\u003e\n\u003ctd\u003eleft to right correct and up and down correct\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGSOPD90 angle\u003c\/td\u003e\n\u003ctd\u003e90 degrees, prism\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGSOPD90 image orientation\u003c\/td\u003e\n\u003ctd\u003eup and down correct, left to right reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBarrel and eyepiece fit\u003c\/td\u003e\n\u003ctd\u003e1.25 inch on both models\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrism size\u003c\/td\u003e\n\u003ctd\u003efull size, delivering a fully illuminated field with no vignetting\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTelescope types\u003c\/td\u003e\n\u003ctd\u003erefractor and Cassegrain\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRecommended use\u003c\/td\u003e\n\u003ctd\u003eterrestrial observing; the GSOPD90 is also suited to night time astronomy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrism coatings\u003c\/td\u003e\n\u003ctd\u003eNot published\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eClear aperture\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\u003enot a solar filter; solar viewing requires certified solar filtration on the telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eShipping weight\u003c\/td\u003e\n\u003ctd\u003e2.0 lb each\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 45 Degree Erect Image","offer_id":53917599203439,"sku":"GSOPD45","price":45.99,"currency_code":"USD","in_stock":true},{"title":"1.25 inch 90 Degree Prism","offer_id":53917599236207,"sku":"GSOPD90","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/7968\/0367\/files\/odia-gs-pd45-2_2_1_2.jpg?v=1785527525","url":"https:\/\/telescopedepot.com\/products\/lunt-terrestrial-star-diagonal","provider":"Telescope Depot","version":"1.0","type":"link"}