Unlike other panels in the market, the FlatMaster can adjust its brightness from 0 to 100%. Forget sheets of paper between your telescope and the panel. Remote control the brightness of your panel. Store the brightness per filter and immediately retrieve the value you need.
The Flatmaster 250L can go up to very high brightness levels so it can easily support short exposures (2-3 seconds at f/7) with 3nm narrowband imaging filters