Sky Watcher Evoguide 50ED Flattener Compatible with Evoguide 50ED

Sky Watcher Evoguide 50ED Flattener Compatible with Evoguide 50ED. This Flattener allows the Field Flattener to be retracted in towards the camera which brings the image to a nice round number of degrees (within the limiting sphere of most astroimaging softwares) while ensuring the main image is not truncated. Field Flatteners work best with telephoto lenses that have a similar focal length as they allow the Flattener to be tripped at the same time. For a simple and quick install choose the Sky-