Every once in awhile I think of getting a filter slide (Astrocrumb) but don’t they add a whole bunch extra into the light path? Someone I know and respect as a deep sky observer swears by his.
My Astrocrumb cuts the light cone, especially for my fast dob. My other (MoonLite - post # 7) is not. Therefore, I use MoonLite. They are both mine. The first one is unfortunately.
Ps. I consider a situation without a filter. With a filter cuts a 2" filter (for MoonLite slider - install your focuser correctly to minimize the effect). And another refinement. I always use paracorr-2
And another significant nuance. MoonLite slider allows me to use Denk bino (the filter is installed on OCS if necessary).
Edited by a__l, 12 June 2020 - 06:50 AM.