Pegasus Astro Flat Panel - Flatmaster 250 astronomy gift the bandwidth of H-alpha systems

the bandwidth of H-alpha systems can be reduced which provides much more contrast and detail on the Sun's surface

sealed and filled with nitrogen

Reflectivity: 91%

An optional focal reducer can reduce the aperture ratio to f/5

Pegasus Astro Flat Panel - Flatmaster 250 astronomy gift the bandwidth of H-alpha systemsThe FlatMaster 250 is a Pegasus Astro flatfield electroluminescent panel. It provides a uniform source of illumination for up apertures up to 250mm and produces high quality flat field frames for astrophotography and photometric captures. Dimmable EL Panel: Unlike other EL panels in the market, the FlatMaster can very easily adjust its brightness. Forget sheets of paper between your telescope and the panel. Remotely control the brightness of your