{"id":16575,"date":"2026-08-28T09:42:11","date_gmt":"2026-08-28T07:42:11","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&#038;p=16575"},"modified":"2026-08-28T09:46:35","modified_gmt":"2026-08-28T07:46:35","slug":"ts-optics-gso-rc-355-mm","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/ts-optics-gso-rc-355-mm\/","title":{"rendered":"TS-Optics GSO RC 355 mm f\/8 RC Telescope \u2013 Gen. II \u2013 Lightweight Truss OTA"},"content":{"rendered":"<h3 style=\"text-align: center;\">TS-Optics GSO RC 355 mm f\/8 Gen. II \u2013 Carbon-Frame Ritchey-Chr\u00e9tien Telescope<\/h3>\n<p>Visit <strong>TS-Optics GSO RC 355 mm f\/8 Gen. II<\/strong> is a 14-inch Ritchey-Chr\u00e9tien telescope designed for demanding astrophotography and visual observation from a fixed location. Its open carbon-fiber lattice structure, lightweight primary mirror, and reinforced optics provide excellent stability while keeping the tube\u2019s weight to approximately 25 kg.<\/p>\n<p>Thanks to its hyperbolic primary and secondary mirrors, this all-reflective optical system provides a well-corrected field of view, free of chromatic aberration. It is also suitable for infrared imaging with a compatible camera. Its 355-mm aperture ensures high light-gathering power, ideal for photographing galaxies, planetary nebulae, globular clusters, and other compact deep-sky objects.<\/p>\n<h3>High-Performance Lenses for Astrophotography<\/h3>\n<p>The mirrors are treated with <strong>94 % with improved reflectivity<\/strong>, producing a bright, high-contrast image. The telescope offers a useful field of view of approximately 70 mm and a naturally well-corrected field of approximately 35 mm in diameter. Sensors up to APS-C format can therefore be used without a corrector. For larger or full-frame sensors, the use of a suitable corrector is recommended to optimize star quality at the edge of the field of view.<\/p>\n<p>The native aspect ratio of <strong>f\/8<\/strong> provides a focal length of 2,845 mm, which is particularly well-suited for high-resolution imaging. Optional focal reducers also make it possible to achieve a brighter system and shorten exposure times.<\/p>\n<h3>Lightweight design and stable collimation<\/h3>\n<p>The quartz glass primary mirror features a honeycomb structure that significantly reduces the instrument\u2019s mass. It is held in place laterally by ten support points and supported by an 18-point optimized barrel. This design limits stress on the mirror and helps maintain collimation, even during significant changes in orientation.<\/p>\n<p>The open carbon-fiber lattice structure improves focus stability as the temperature changes. Three fans located at the rear help the primary mirror reach operating temperature more quickly. Internal diaphragms reduce stray reflections and enhance contrast.<\/p>\n<h3>RAP Gen. II Eyepiece Holder<\/h3>\n<p>The 3-inch RAP eyepiece holder uses a rack-and-pinion drive and stainless steel rail guidance with ball bearings. This mechanism ensures precise movement and high rigidity, even with a heavy camera and accessories.<\/p>\n<ul>\n<li>Stepped adjustment for precise focusing<\/li>\n<li>50 mm sliding tube stroke<\/li>\n<li>Compatible with EAF-type focusing motors<\/li>\n<li>Holders for 2-inch and 1.25-inch accessories<\/li>\n<li>Additional threads for screw connections<\/li>\n<\/ul>\n<h3>Installation and Use<\/h3>\n<p>Two Losmandy-standard dovetails are mounted on the tube. The first allows the telescope to be securely attached to a compatible mount, while the second can accommodate various accessories. With its generous backfocus of 280 mm, the telescope provides ample space to integrate a camera, a corrector, a focal reducer, or a binocular head.<\/p>\n<p>This telescope is primarily intended for observatories and fixed or semi-fixed installations. Due to its long focal length and weight, a sturdy equatorial mount with sufficient load capacity is essential.<\/p>\n<h3>Technical data<\/h3>\n<div style=\"overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<tbody>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Lens type<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Ritchey-Chr\u00e9tien (RC)<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Opening<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">355 mm \/ 14\u2033<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Focal length<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2,845 mm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Focus report<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">f\/8<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Reflectivity<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Processing improved to 94 %<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Lens holder<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">RAP 3\" Gen. II Rack-and-Pinion, Two-Speed<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Eyepiece Holder Travel<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">50 mm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Accessory connection<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2\u2033 and 1.25\u2033 pipes, with additional threads for screw-on adapters<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Backfocus<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">280 mm from the rear of the tube<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Rear thread on the tube<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">M117 \u00d7 1 male<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Tube diameter<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">535 mm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Tube length<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">1,140 mm with eyepiece holder \/ 990 mm without eyepiece holder<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Center of Gravity<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">About 260 mm from the back of the tube<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Tube weight<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\"><strong>25 kg<\/strong><\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Obstruction of the secondary mirror<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">About 170 mm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Dovetails<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">2 \u00d7 standard Losmandy<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Tube structure<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">Carbon lattice<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Ventilation<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">3 rear fans<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Number of packages<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">1<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Package Dimensions<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">127 \u00d7 69 \u00d7 64 cm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Shipping dimensions<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">150 \u00d7 80 \u00d7 120 cm<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 8px; border: 1px solid #ddd; text-align: left;\">Package weight<\/th>\n<td style=\"padding: 8px; border: 1px solid #ddd;\">About 45 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>TS-Optics GSO RC 355 mm f\/8 Gen. II \u2013 T\u00e9lescope Ritchey-Chr\u00e9tien \u00e0 structure carbone Le TS-Optics GSO RC 355 mm f\/8 Gen. II est un t\u00e9lescope Ritchey-Chr\u00e9tien de 14 pouces con\u00e7u pour l\u2019astrophotographie exigeante et l\u2019observation visuelle en poste fixe. Sa structure ouverte en treillis de carbone, son miroir primaire all\u00e9g\u00e9 et sa m\u00e9canique renforc\u00e9e [&hellip;]<\/p>\n","protected":false},"featured_media":16576,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[842],"product_cat":[750],"product_tag":[],"class_list":["post-16575","product","type-product","status-publish","has-post-thumbnail","product_brand-ts-optics","product_cat-ritchey-chretien","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/16575","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=16575"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/16576"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=16575"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=16575"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=16575"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=16575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}