Hey so I’m looking to get into planetary imaging with my 8 inch f/5.9 dobsonian. I have been looking at the asi120mc-s(I know the asi224mc is better but a little out of my budget currently). The camera has a 3.75 pixel size. The rule of thumb being 3.75 x 5 = f/18.75. I already own a 2x Barlow would this work ok or do I need to get a 3x Barlow to get closer to the f/18.75?
Also I’ve entered these things into stellarium to see what kind of views to expect and it’s higher than the 400x max magnification my telescope gets. Does the max magnification still apply when imaging or not? I’m looking to put my order in on Black Friday so any replies before then are appreciated. Thanks!