{"id":26282,"date":"2025-08-25T16:19:14","date_gmt":"2025-08-25T14:19:14","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=26282"},"modified":"2026-09-04T14:01:11","modified_gmt":"2026-09-04T12:01:11","slug":"omegon-pro-field-flattener-2-inch","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/omegon-pro-field-flattener-2-inch\/","title":{"rendered":"Omegon Pro Field Flattener 2 inch"},"content":{"rendered":"

Omegon Pro Field Flattener 2-inch: the heavier flattener for longer refractors<\/strong><\/h2>\n\n\n\n

This Pro-flattener is aimed at refractors with 500 to 1000 mm focal lengths and f\/5 to f\/9, the range of most medium APOs. It flatens the curved image field without changing the focal length: the same field of view, but sharp right to the corners.<\/p>\n\n\n\n

The wide M68 telescope side suppresses vignetting on large sensors, where a narrower flattener would already shadow the corners before the optics correct them.<\/p>\n\n\n\n

\"Omegon<\/figure>
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Working distance per focal length<\/h4>\n\n\n\n

The correct sensor distance is between 87 and 106 mm, depending on your refractor's focal length. Shorter focal lengths require the shorter distance; determine yours once with test shots on the corner stars.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\"Omegon<\/figure>\n<\/div>\n\n\n\n
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M68 to M48<\/h4>\n\n\n\n

The telescope side is M68; an adapter to M48 is included, so standard camera adapters and 2-inch filter chains fit directly. The optical length with adapter is approximately 55 mm.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\"Omegon<\/figure>\n<\/div>\n\n\n\n
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Fully multicoated<\/h4>\n\n\n\n

The coating keeps the contrast high and prevents reflections from bright field stars.<\/p>\n<\/div>\n<\/div>\n\n\n\n

Included<\/h3>\n\n\n\n