The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. This curvature causes stars that are imaged at the edge of the field of view to be less sharp. The flattener, also called a field flattener, corrects this effect. Astrophotographers can then enjoy images where the stars remain sharp right out to the edge of the exposure. The flattener is installed between the telescope and the camera.
With this flattener, you can turn compact 72 mm ED APOs into excellent telescopes for astrophotography. The entire connection from the telescope to the camera can also be screwed together as an option, eliminating the risk of tilting.
The Lacerta flattener can be used with all compact 72 mm ED doublets (72/420 or 72/432), such as the models from SkyWatcher, Omegon, Artesky, Lacerta and many more. Thanks to the optional screw connection and an additional M48/M48 extension, the focuser does not have to be extended as far. This reduces tilting even with a less precise focuser.
Features:
- 2-lens flattener without focal length reduction (1x)
- Suitable for many ED doublets with FPL51 or FPL53 glass
- Corrects APS-C to full frame (with full frame, slight distortion of bright stars in the corners of the image cannot be completely ruled out)
- Working distance: 55 mm from the T2 thread (with a telescope focal length of approx. 430 mm)
- 2" filter can be screwed in front of the flattener
