Filters on the Hyperstar 4 – L-Extreme

As mentioned earlier, I did try the Optolong L-Extreme filter out on the Hyperstar 4 (on the Gamma Cass nebula) and the result was – no improvement as far as I could see. So as expected, these filters are not suitable at f#2 (no real surprise there) and for an OSC camera you really need to stick with just a UV/IR cut filter for the best results.