Wanderer Astro flat field mask 150mm V4 IR (85905)
423.71 $
Tax included
A flat field mask provides a white area with consistent brightness. To use it, place the mask on the front of your telescope and take a photo of the illuminated surface. This flat field image reveals the exact brightness distribution of your optical system, allowing you to correct brightness gradients in your astrophotographs during processing. For the most accurate results, use the mask under the same conditions and with the same optical setup as your actual images. The mask is built for portability and can be easily powered in the field.