So, this is a bad example of an astro image 🙁
My DSLR almost slipped out of the focuser during handling on it. Fortunately I holded my 70D in both of my hands as it began to move… a very bad feeling 😉

Maybe I lost the collimation during that action or it was tilted in the focuser afterwards… but there is strong coma in the corners of this image…

And maybe I need to loosen the primary mirror holder pads a bit more, since the stars have an strange shape in the right upper corner.

And I guess I moved the primary mirror upwards in secondary mirror direction while collimating the scope with all 3 collimating knobs…
Does anybody knows what happens if the primary mirror is a bit nearer to the secondary mirror (I’m talking about 2-3mm)???


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