{"id":16317,"date":"2025-07-23T15:14:15","date_gmt":"2025-07-23T13:14:15","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=16317"},"modified":"2026-09-10T14:45:29","modified_gmt":"2026-09-10T12:45:29","slug":"omegon-154-1848-cassegrain-ota","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-154-1848-cassegrain-ota\/","title":{"rendered":"Omegon 154\/1848 Cassegrain Newton"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\">Omegon 154\/1848 Cassegrain Newton: planetary contrast in a compact format<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Omegon 154\/1848 Cassegrain<\/strong> delivers a long focal length of 1848 mm (f\/12) in a tube shorter than many 80 mm refractors. The classic Cassegrain design, featuring a parabolic primary mirror with a secondary mirror, provides high magnification and high contrast for planets, double stars, and lunar craters, without chromatic aberration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The long focal length makes high magnifications attainable with standard eyepieces and directly provides a usable image scale for planetary photography.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For balcony and permanent installation<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">With a 7 mm eyepiece you are at 264x, well within the practical maximum of about 300x. The collimation-stable, low-maintenance design and compact size make this tube ideal for balcony use and permanent setups with limited space.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The 2-inch rear connection accepts a focuser and accessories of your choice; a dust cap and Vixen dovetail are included.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Included<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cassegrain optics 154\/1848 with parabolic primary mirror<\/li>\n\n\n<li>2-inch rear connection<\/li>\n\n\n<li>Dust cover<\/li>\n\n\n<li>Vixen-style dovetail<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Featured accessories<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The Omegon Cronus 7 mm eyepiece (79 euros) provides 264x for planetary detail, and the Omegon 7-21 mm zoom eyepiece (69 euros) continuously covers 88x to 264x. An Omegon Premium moon filter (19.90 euros) subdues the bright Moon.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">For whom yes, for whom no<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Pros: planet enthusiasts and beginner planetary photographers who want a long focal length in a small space. Cons: those looking for deep-sky or wide-field; at f\/12 the field of view is too narrow for that. Hesitating between the models? The <a href=\"\/en\/telescope-selection-aid\/\">Choice assistant<\/a> helpt. More Omegon is on the <a href=\"\/en\/brands\/omegon\/\">merk page<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Specifications<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th>Value<\/th><\/tr><\/thead><tbody><tr><td>Opening<\/td><td>154 mm<\/td><\/tr><tr><td>Focal length<\/td><td>1848 mm<\/td><\/tr><tr><td>Opening ratio<\/td><td>f\/12<\/td><\/tr><tr><td>Optical design<\/td><td>Classical Cassegrain (parabolic primary mirror)<\/td><\/tr><tr><td>Rear connection<\/td><td>2 inches<\/td><\/tr><tr><td>Dovetail<\/td><td>Vixen-style<\/td><\/tr><tr><td>Execution<\/td><td>OTA (loose tube)<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>The Omegon 154\/1848 Cassegrain offers a focal length of 1848 mm in a compact, collimation-stable tube with a 2-inch rear connection, dust cover, and Vixen dovetail: planetary contrast for balconies and permanent setups.<\/p>","protected":false},"featured_media":22204,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[126],"product_cat":[51,3261,2972],"product_tag":[],"class_list":["post-16317","product","type-product","status-publish","has-post-thumbnail","product_brand-omegon","product_cat-telescopen","product_cat-reflector-ota-losse-buizen","product_cat-reflector-telescopen","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":[12702,92457,24780],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":16308,"url":"https:\/\/www.telescoop.nl\/en\/omegon-203-2436-cassegrain-ota\/","url_meta":{"origin":16317,"position":0},"title":"Omegon 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