Visit LS40THa Premium Kit<\/strong> represents the most advanced solution in the 40 mm range dedicated to H-Alpha solar observation. Designed to offer the best double-stack performance in an ultra-portable format, this system combines two front-mounted precision standards to achieve a combined bandwidth of less than 0.25 \u00c5.<\/p>\n Each instrument is equipped with new-generation standards, individually measured at 656.28 nm on Lunt precision metrology equipment. All specifications are accurately verified, not simply estimated.<\/p>\n At just 2.6 lbs for the optical tube and around 1 lb more for the double-stack filter, this kit is perfectly transportable, while offering exceptional levels of chromospheric contrast.<\/p>\n The filter LS40FHa Double Stack<\/strong> adds a second 0.35 \u00c5 H-Alpha standard to the optical path. The two standards work in series to achieve a combined bandwidth of less than 0.25 \u00c5, revealing details invisible with a single-stack system.<\/p>\n Thanks to this advanced configuration, the solar chromosphere becomes incredibly detailed:<\/p>\n The Sun no longer appears as a simple luminous texture, but as a dynamic, living landscape.<\/p>\n The Premium kit includes a 7.2-21.5 mm zoom eyepiece, enabling you to switch quickly between full-disc and high-magnification views without changing eyepieces.<\/p>\n This flexibility is particularly useful when solar phenomena evolve rapidly or when atmospheric conditions change.<\/p>\n The LS40THa Premium Kit features a 10:1 double-speed CNC rack-and-pinion eyepiece holder, specially designed for the demands of sub-quarter-angstrom viewing.<\/p>\n Key benefits:<\/p>\n The extended 6\u2033 Vixen dovetail ensures optimum system balance even with the front-mounted double stack filter.<\/p>\n Each LS40THa Premium Kit is individually assembled, optical bench-tested and monochromator-checked before shipment from Tucson. This procedure guarantees consistent performance in line with advertised specifications.<\/p>\n The LS40THa Premium Kit is the ideal solution for astronomers seeking the best possible chromospheric contrast in a compact, transportable format. Thanks to its high-precision double-stack system, double-speed premium eyepiece holder and versatile zoom eyepiece, it offers an exceptional visual and imaging solar observing experience.<\/p>","protected":false},"excerpt":{"rendered":" LS40THa Premium Kit : T\u00e9lescope solaire H-Alpha double stack haute performance Le LS40THa Premium Kit repr\u00e9sente la solution la plus avanc\u00e9e de la gamme 40 mm d\u00e9di\u00e9e \u00e0 l\u2019observation solaire en H-Alpha. Con\u00e7u pour offrir les meilleures performances double stack dans un format ultra-portable, ce syst\u00e8me associe deux \u00e9talons de pr\u00e9cision mont\u00e9s \u00e0 l\u2019avant afin […]<\/p>\n","protected":false},"featured_media":14893,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[880],"product_cat":[643],"product_tag":[],"class_list":["post-14892","product","type-product","status-publish","has-post-thumbnail","product_brand-lunt-solar-systems","product_cat-lunettes-solaires","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/14892","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=14892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/14893"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=14892"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=14892"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=14892"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=14892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Double stack: unrivalled detail<\/h3>\n
\n
Flexible viewing with zoom eyepiece<\/h3>\n
\n
High-quality mechanics and maximum precision<\/h3>\n
\n
Assembly and quality control<\/h3>\n
Complete kit contents<\/h3>\n
\n
Summary table of technical specifications<\/h3>\n
\n\n
\n Features<\/th>\n Detail<\/th>\n<\/tr>\n \n Type<\/td>\n Dedicated H-Alpha solar telescope (daytime use only)<\/td>\n<\/tr>\n \n Opening<\/td>\n 40 mm full aperture without obstruction<\/td>\n<\/tr>\n \n Focal length<\/td>\n 400 mm<\/td>\n<\/tr>\n \n Focus report<\/td>\n f\/10<\/td>\n<\/tr>\n \n Standard type<\/td>\n Double frontal tilt-tuned standard (LS40THa + LS40FHa)<\/td>\n<\/tr>\n \n Single-stack bandwidth<\/td>\n 0.35 \u00c5 (individually verified)<\/td>\n<\/tr>\n \n Double-stack bandwidth<\/td>\n <0.25 \u00c5 combined (two 0.35 \u00c5 standards in series)<\/td>\n<\/tr>\n \n Blocking filter<\/td>\n B600, 6 mm clear aperture<\/td>\n<\/tr>\n \n Lens holder<\/td>\n 1.25\u2033 CNC rack, double speed 10:1, rotary, integrated brake<\/td>\n<\/tr>\n \n Eyepiece holder capacity<\/td>\n 6-8 lbs<\/td>\n<\/tr>\n \n Eyepiece<\/td>\n Zoom 7.2-21.5 mm, magnification 19x-56x<\/td>\n<\/tr>\n \n Optical treatment<\/td>\n Anti-reflective coating 0.1 %<\/td>\n<\/tr>\n \n Apparent field<\/td>\n 53\u00b0-40\u00b0<\/td>\n<\/tr>\n \n Eye relief<\/td>\n 15 mm<\/td>\n<\/tr>\n \n Solar researcher<\/td>\n SunLock, red dot projection, 3-screw adjustment<\/td>\n<\/tr>\n \n Dovetail<\/td>\n Vixen 6\u2033, length 150 mm, 3 threads 1\/4-20<\/td>\n<\/tr>\n \n Briefcase<\/td>\n Aluminum, 18.5\u2033 x 10.5\u2033 x 7\u2033, cut foam<\/td>\n<\/tr>\n \n OTA weight<\/td>\n \u22482.6 lbs<\/td>\n<\/tr>\n \n Double stack filter weight<\/td>\n \u22481 lb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Why choose the LS40THa Premium Kit?<\/h3>\n