This is another test of my Orion 100ED, the focuser after tuning is much better, it's just smooth and accurate, and it holds heavier stuff than before!
This is taken with a 3x barlows and DMK 31AF03:
I've pulled out my 7mm Ortho to have a look, the color variation on the globe is very easy to see, and it's just sharp! Now I know why 4" refractor is so common because it's simply a great tool for visual observation.
Seeing is no good, I guess around 3/10, transparency like 2/10... I've to use 1/8s exposure with very high gain.