{"id":19660,"date":"2026-10-15T22:36:17","date_gmt":"2026-10-15T20:36:17","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=19660"},"modified":"2026-10-16T12:59:32","modified_gmt":"2026-10-16T10:59:32","slug":"touptek-sho-sets","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/touptek-sho-sets\/","title":{"rendered":"ToupTek SHO: Set of H\u03b1, SII, and OIII filters"},"content":{"rendered":"

The ToupTek SHO kit includes three narrowband filters for the H\u03b1, SII, and OIII lines. It allows for the separate acquisition of these channels to create SHO-palette composites.<\/p>\n

The three filters separate the H\u03b1, SII, and OIII emissions for channel-by-channel acquisitions. The indicated spectral lines are 656.3 nm, 671.6 nm, and 500.7 nm, respectively. These data identify the target emissions; they should not be confused with the bandwidth of each filter. This product sheet lists only complete sets and not individual filters sold separately.<\/p>\n

Setup and Use<\/h3>\n

The choice of set is based on two criteria: its mechanical format and its bandwidth. The 1.25-inch and 2-inch sets at 6.5 nm share the same nominal bandwidth but not the same diameter. The 2-inch set at 4 nm is another option. For the 36-mm set, maintain the distinction in the technical table between H\u03b1 at 3.5 nm and SII\/OIII at 4 nm, despite the commercial name \u00ab4 nm.\u00bb.<\/p>\n

The 1.25-inch and 2-inch sizes come with a frame, while the 36-mm filters are unmounted. You should therefore choose the set based on the actual mounting system in the wheel or filter holder. For 36-mm filters, the side with the black inner rim must face the telescope. This orientation guideline should be followed when verifying the size before installation.<\/p>\n

The quartz thickness is specified as 2 mm, with an IAD coating. When preparing the setup, keep this glass, its mount (if any), and all other components of the optical train separate. The filters do not include a camera or a motorized wheel. Choosing an SHO set involves selecting spectral channels; the final image is then determined by the individual acquisitions and their assembly during processing.<\/p>\n

Technical specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n
Contents<\/th>\nH\u03b1, SII, and OIII<\/td>\n<\/tr>\n
H\u03b1 line<\/th>\n656.3 nm<\/td>\n<\/tr>\n
SII Ray<\/th>\n671.6 nm<\/td>\n<\/tr>\n
OIII Line<\/th>\n500.7 nm<\/td>\n<\/tr>\n
FWHM in 1.25 inches<\/th>\n6.5 nm for the three filters<\/td>\n<\/tr>\n
FWHM at 36 mm<\/th>\nH\u03b1 3.5 nm; SII 4 nm; OIII 4 nm<\/td>\n<\/tr>\n
FWHM in 2 inches<\/th>\n6.5 nm or 4 nm, depending on the game<\/td>\n<\/tr>\n
Glass thickness<\/th>\n2 mm<\/td>\n<\/tr>\n
Material<\/th>\nQuartz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

The ToupTek SHO kit includes three narrowband filters for the H\u03b1, SII, and OIII lines. It allows for the separate acquisition of these channels to create SHO-palette composites.<\/p>","protected":false},"featured_media":19656,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[831],"product_cat":[801],"product_tag":[],"class_list":["post-19660","product","type-product","status-publish","has-post-thumbnail","product_brand-touptek","product_cat-filtre-astrophotographie-du-ciel-profond","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/19660","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=19660"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/19656"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=19660"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=19660"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=19660"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=19660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}