The Skywatchers 0.85x 72 ED Flattener EvoStar shortens the focal length of your telescope. This makes your image brighter and larger pieces of sky fit on your camera. Your stars stay sharp all the way to the edge of your picture.<\/p>\n\n\n\n
![\"Skywatchers](\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatchers-0.85x-72-ED-Flattener-EvoStar-.jpg\" "\\"\\"")
<\/figure>\n<\/figure>\n\n\n\nEasy to assemble<\/strong> Corrected field of view<\/strong> Compact and light<\/strong> Capacity<\/strong><\/p>\n\n\n\n General<\/strong><\/p>\n\n\n\n Skywatcher's 0.85x 72 ED comes with 0.85x reducer\/flattener, M56 telescope connector, M48 camera adapter and multi-coated optics with 55 mm back focus for fast, flat astrophotos with the Skywatcher AP 72\/420 EvoStar ED.<\/p>\n <\/p>","protected":false},"featured_media":98275,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[542],"product_cat":[469,3107,3105,3104,3106],"product_tag":[],"class_list":["post-91135","product","type-product","status-publish","has-post-thumbnail","product_brand-sky-watcher","product_cat-astro-fotografie","product_cat-flatteners","product_cat-optische-accessoires","product_cat-overige-astrofotografie-accessoires","product_cat-reducers","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":91135,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"Smart telescoop met een vierlenzige apochromaat van 50 mm opening en 260 mm brandpunt, een groothoekcamera en twee 4K-sensoren. Gestapelde foto's van nevels en stelsels, een heldere nevel na 10 tot 20 minuten; zon met het magnetische filter; planeten blijven enkele pixels groot; geen oculair.Ook vanuit de stad: het duo-bandfilter\u2026","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/#comments"},"img":{"alt_text":"ZWO Seestar S50 Pro hero","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2026\/08\/zwo-seestar-s50-pro.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/91135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/comments?post=91135"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98275"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=91135"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=91135"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=91135"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=91135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
You screw the corrector onto the focuser of your telescope. On the camera side, you use an M48 adapter. Within minutes you are ready to shoot.<\/p>\n\n\n\n
The flattener eliminates curvature of the image field. Your pictures will therefore be uniformly sharp. Especially with large sensors, you can see the difference immediately.<\/p>\n\n\n\n
The reducer weighs only 260 grams and adds no hassle to your setup. It remains stable during long shots, so you'll always get clear and sharp results.<\/p>\n\n\n\nSpecifications<\/strong><\/h3>\n\n\n\n
Feature<\/th> Value<\/th><\/tr><\/thead> Focal reducer<\/td> 0,85\u00d7<\/td><\/tr> Optics coating<\/td> Multiple<\/td><\/tr> Connection on camera side<\/td> M48<\/td><\/tr> Telescope connection<\/td> M56<\/td><\/tr> Backfocus (mm)<\/td> 55<\/td><\/tr> Optical length (mm)<\/td> 50<\/td><\/tr> Suitable for telescopes<\/td> Skywatcher AP 72\/420 EvoStar ED<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Feature<\/th> Value<\/th><\/tr><\/thead> Type<\/td> Flattener, Corrector, Reducer<\/td><\/tr> Design<\/td> Flattener<\/td><\/tr> Weight (g)<\/td> 260<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"