Something new.

Found out something new today that I had never thought about until now with the seestars.

I normally run three mono setups, and all my narrowband filters are 3nm. So 3nm is pretty tight. While the seestars LP filter is OIII 30nm / Hα 20nm, that's not great. As a matter of fact, pretty sloppy, but that's ok, we can fix that.

Look up on YouTube Seti Astros Continuum Subtraction. It takes the sloppy Ha image and subtracts all the wavelengths that are above and below 656.3nm. That is the wavelength of Ha. This gives you a pure Ha, not the 646.3nm to 666.3nm image.

For my mono images, I really don't need this function as I have 3nm filters, so my Ha is 654.8nm - 657.8nm. You're not really going to notice the difference between the pure Ha and the 3nm Ha, but with the seestrs you will.

For my S50, I will. I'll really look into this when doing narrowband Nebulae and Galaxies that contain Ha.