{"id":1277,"date":"2024-12-18T16:25:40","date_gmt":"2024-12-18T15:25:40","guid":{"rendered":"https:\/\/deep-space-astronomy.geekworkers.dev\/?post_type=product&#038;p=1277"},"modified":"2025-06-03T10:36:15","modified_gmt":"2025-06-03T08:36:15","slug":"reducteur-0-75x-71f","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/reducteur-0-75x-71f\/","title":{"rendered":"Reducer 0.75x 71F"},"content":{"rendered":"<h3>Askar 71F 0.75x gearbox - Specifications and features<\/h3>\n<p>The Askar 71F 0.75x reducer is a high-quality accessory optimized for the Askar 71F telescope, offering new possibilities for use. This reducer is designed to reduce the focal ratio and flatten the field, making it ideal for capturing large areas of nebulae, star clusters and fast-moving celestial objects. It offers the following technical features:<\/p>\n<ul>\n<li><strong>Focal length :<\/strong> 369 mm after installation with 71F<\/li>\n<li><strong>Focal report :<\/strong> f\/5.2 after installation with the 71F<\/li>\n<li><strong>Lens type :<\/strong> Triplet design for improved optical correction<\/li>\n<li><strong>Rear focal length :<\/strong> 55 mm (measured from base of M48 male thread)<\/li>\n<li><strong>Weight :<\/strong> 0.23 kg, ensuring optimum balance for astrophotography setups<\/li>\n<li><strong>Rear thread type :<\/strong> M59*1, facilitating integration with various accessories<\/li>\n<\/ul>\n<p>This reducer's design maintains an image circle compatible with 44mm full-frame sensors, guaranteeing full image coverage and sharp stars right up to the edges. What's more, it includes two adapters: one in M540.75 and the other in M480.75, for enhanced compatibility with existing configurations.<\/p>\n<h3>Dimensions and construction<\/h3>\n<ul>\n<li><strong>Outside diameter :<\/strong> 62 mm<\/li>\n<li><strong>Total length :<\/strong> 48 mm<\/li>\n<li><strong>Thread :<\/strong> M59*1, for a reliable and secure connection<\/li>\n<\/ul>\n<p>Finally, both ends feature CNC-machined, threaded metal caps to protect against dust and dirt when the equipment is not in use, ensuring long life and optimum performance in demanding environments.<\/p>\n<h3>Benefits for users<\/h3>\n<p>By reducing the focal ratio, this reducer enables shorter exposure times, widening the field of view for faster captures and improved visual effect when observing diffuse celestial objects. It is particularly suited to astrophotographers seeking to maximize the quality and width of their field of observation.<\/p>","protected":false},"excerpt":{"rendered":"<p>R\u00e9ducteur Askar 71F 0.75x &#8211; Sp\u00e9cifications et caract\u00e9ristiques Le r\u00e9ducteur Askar 71F 0.75x est un accessoire de haute qualit\u00e9 optimis\u00e9 pour le t\u00e9lescope Askar 71F, offrant de nouvelles possibilit\u00e9s d\u2019utilisation. Ce r\u00e9ducteur est con\u00e7u pour r\u00e9duire le rapport focal et aplatir le champ, ce qui le rend id\u00e9al pour capturer des zones larges de n\u00e9buleuses, [&hellip;]<\/p>\n","protected":false},"featured_media":6766,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[382],"product_cat":[650],"product_tag":[],"class_list":{"0":"post-1277","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-askar","7":"product_cat-rducteurs-correcteurs-ap","9":"first","10":"on_supplier","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/1277","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=1277"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/6766"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=1277"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=1277"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=1277"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=1277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}