{"id":17768,"date":"2026-09-22T23:56:33","date_gmt":"2026-09-22T21:56:33","guid":{"rendered":"https:\/\/deep-space-astronomy.ch\/?post_type=product&p=17768"},"modified":"2026-09-23T11:52:54","modified_gmt":"2026-09-23T09:52:54","slug":"ch4-8nm-1-25-filter-e-series","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/ch4-8nm-1-25-filter-e-series\/","title":{"rendered":"Player One CH4 Series E \u2013 1.25-inch filter"},"content":{"rendered":"

<\/p>\n

CH4 E Series \u2013 1.25-inch filter<\/h3>\n

The E-series CH4 filter blocks a 8-nm band centered at 889 nm for imaging in the methane band.<\/p>\n

Technical specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model Specifications<\/caption>\n
Brand<\/th>\nPlayer One<\/td>\n<\/tr>\n
Manufacturer reference<\/th>\nCH4-125E<\/td>\n<\/tr>\n
Format<\/th>\n1.25 inches<\/td>\n<\/tr>\n
Center wavelength<\/th>\n889 nm<\/td>\n<\/tr>\n
Bandwidth<\/th>\n8 nm<\/td>\n<\/tr>\n
Announced Transmission<\/th>\nApproximately 90 %<\/td>\n<\/tr>\n
Glass thickness<\/th>\n1.85 mm<\/td>\n<\/tr>\n
Thread<\/th>\nM28.5\u00d70.6<\/td>\n<\/tr>\n
Surface accuracy<\/th>\n\u03bb\/4<\/td>\n<\/tr>\n
Announced Blockade<\/th>\nOD4<\/td>\n<\/tr>\n
Mount<\/th>\n5 mm + 2.5 mm thread; total 7.5 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Player One Official Profile<\/a><\/p>\n

Manufacturer's illustration.<\/p>\n

<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

The E-series CH4 filter blocks a 8-nm band centered at 889 nm for imaging in the methane band.<\/p>","protected":false},"featured_media":17767,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[556],"product_cat":[804],"product_tag":[],"class_list":["post-17768","product","type-product","status-publish","has-post-thumbnail","product_brand-player-one","product_cat-filtres-planetaires","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/17768","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=17768"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/17767"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=17768"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=17768"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=17768"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=17768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}