Astrochonum

We are just back from vacation. Astronomically speaking, most of the time was spent in optical alignment of the CN212, backfocus testing and mecanical tweaking.

So we managed to make only one picture, but with an optimized setup. Unfortunatly we were in Auvergne and the sky wasn't optimized at all with wind, full moon and rather poor seeing.

This is NGC6888 crescent nebula and the soap bubble. i spent 7h50 using Bin2 to get the bubble in both OIII and HA.

CN212 + Paracorr on AP900. CCD Sigma2 8300 Bin2, Astrodon 5nm SHO. 
932mm real focal length, 2,39"/pixel, FWHM 4".