The Skywatchers Flattener 120 corrects curvature in the field of view of your telescope. Without this correction, stars toward the edge become stretched and out of focus. With the flattener, your images remain sharp, clear and true to nature across the entire field.<\/p>\n\n\n\n
![\"\"](\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatchers-Flattener-120-077x-Esprit-1.jpg\" "\\"\\"")
<\/figure>\n<\/figure>\n\n\n\nIdeal for photography with fast telescopes<\/strong> Easy to assemble<\/strong> Fast and fully corrected shots<\/strong> Solid and durable design<\/strong> Capacity<\/strong><\/p>\n\n\n\n General<\/strong><\/p>\n\n\n\n The Skywatchers Flattener 120 comes with a 0.77x reducer\/flattener, M48 camera adapter, 2\" filter thread, and 55mm backfocus - ideal for razor-sharp astrophotos with the Skywatcher Esprit 120. \u00a0<\/p>","protected":false},"featured_media":98258,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[542],"product_cat":[469,3107,3105,3104,3106,592],"product_tag":[],"class_list":["post-91107","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","product_cat-reducers-flatteners","product_shipping_class-licht","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":91131,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-m48-field-flattener-esprit-120ed\/","url_meta":{"origin":91107,"position":0},"title":"Sky-Watcher M48 Field Flattener for Esprit-120ED Triplet","author":"","date":"04-12-2025","format":false,"excerpt":"Skywatcher's 120 Flattener comes with integrated M48 camera connector and specially designed flattener optics for the Skywatcher Esprit 120, ensuring that stars are captured razor sharp right to the edge of the field of view. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":91140,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-0-77x-reducer-flattener-esprit-120ed\/","url_meta":{"origin":91107,"position":1},"title":"Sky-Watcher 0.77x Focal Reducer & Field Flattener for Esprit-120ED","author":"","date":"04-12-2025","format":false,"excerpt":"Skywatchers 120 EDX 0.85x wordt geleverd met 0,85x reducer\/flattener, M48-cameraaansluiting en passende optiek voor SW EvoStar 120 ED & EDX voor snellere, volledig vlakke astrofoto\u2019s. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":91133,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-0-77x-reducer-flattener-esprit-150ed\/","url_meta":{"origin":91107,"position":2},"title":"Sky-Watcher 0.77x Focal Reducer & Field Flattener for Esprit-150ED","author":"","date":"04-12-2025","format":false,"excerpt":"Skywatcher's M48 Esprit-150ED comes with integrated M48 camera connector and specially designed field flattener for the Skywatcher Esprit 150 - ideal for taking razor-sharp astrophotos across the full field of view.\u00a0\u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":91110,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-0-77x-reducer-flattener-esprit-150ed-2\/","url_meta":{"origin":91107,"position":3},"title":"Sky-Watcher 0.77x Focal Reducer & Field Flattener for Esprit-150ED","author":"","date":"04-12-2025","format":false,"excerpt":"The Skywatcher Flattener 150 comes with a 0.77x reducer\/flattener, M48 camera adaptor, 2\" filter thread, and 55mm back focus \u2013 ideal for tack-sharp astrophotography with the Skywatcher Esprit 150. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatchers-Flattener-150-077x-Esprit-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":91128,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-m48-field-flattener-esprit-100ed\/","url_meta":{"origin":91107,"position":4},"title":"Sky-Watcher M48 Field Flattener for Esprit-100ED Triplet","author":"","date":"04-12-2025","format":false,"excerpt":"Skywatcher's 100 Flattener comes with M65 telescope mount, M48 camera adapter, M74 adapter ring and 55 mm backfocus - ideal for taking flat astrophotos to the image edge with the Skywatcher ESPRIT 100. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatchers-100-Flattener-Esprit-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":91125,"url":"https:\/\/www.telescoop.nl\/en\/skywatcher-m48-field-flattener-esprit-80ed\/","url_meta":{"origin":91107,"position":5},"title":"Sky-Watcher M48 Field Flattener for Esprit-80ED Triplet Super APO","author":"","date":"04-12-2025","format":false,"excerpt":"Skywatcher's M48 Esprit-80ED comes with M48 camera adapter, special-fit Skywatcher ESPRIT 80 telescope mount and high-quality flattener optics for perfectly flat astrophotos all the way to the image edge. \u00a0","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.telescoop.nl\/wp-content\/uploads\/2025\/12\/Skywatchers-M48-Esprit-80ED-Flattener-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product\/91107","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=91107"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media\/98258"}],"wp:attachment":[{"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/media?parent=91107"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_brand?post=91107"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_cat?post=91107"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.telescoop.nl\/en\/wp-json\/wp\/v2\/product_tag?post=91107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
With telescopes with short focal ratios, such as f\/5 to f\/7, and large camera sensors, you see the effect of image field distortion most strongly. The flattener turns your Esprit 120 into a true photographic machine, so your stars are sharp right to the edges of your image.<\/p>\n\n\n\n
You place the flattener between your telescope and camera. It has an M48 threaded connection with 55 mm backfocus, perfect for DSLR cameras with a suitable bayonet adapter. If you remove the adapter, you can use an M71 \u00d7 1 threaded connection with up to 75 mm backfocus for homemade adapters.<\/p>\n\n\n\n
The reducer\/flattener has three lenses and a reduction factor of 0.77\u00d7. This makes your Esprit Apo faster, up to f\/5.4, and creates a fully corrected 36 mm image circle. That's perfect for APS-C and full-frame cameras.<\/p>\n\n\n\n
The flattener has an aluminum body and FMC coating on the lenses. It supports filters up to 2 inches and weighs only 910 grams. This makes it robust, lightweight and easy to use, so you can concentrate on getting the perfect shot.<\/p>\n\n\n\nSpecifications<\/strong><\/h3>\n\n\n\n
Feature<\/th> Value<\/th><\/tr><\/thead> Suitable for telescopes<\/td> Skywatcher Esprit 120<\/td><\/tr> Connection on camera side<\/td> M48<\/td><\/tr> Focal reducer<\/td> 0,77\u00d7<\/td><\/tr> Backfocus (mm)<\/td> 55<\/td><\/tr> Corrected field of view (mm)<\/td> 34<\/td><\/tr> Number of lenses<\/td> 3<\/td><\/tr> Optics coating<\/td> FMC<\/td><\/tr> Filter thread<\/td> yes<\/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> 910<\/td><\/tr> Exterior material<\/td> Aluminum<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"