M52 Open Cluster and the Bubble Nebula

[Davide Simonetti]

Another night with not enough time to image a faint object so we decided to target M52, an open star cluster in Cassiopeia. I didn't expect to be able to resolve the hydrogen gas clouds in the vicinity of the object with less than an hour and a half of exposure, but much to my surprise the Bubble Nebula (NGC 7635) came out nicely and the two objects together make a much more interesting picture. 

017 x 300 second exposures at Unity Gain (139) cooled to -20°C
030 x dark frames
040 x flat frames
100 x bias/offset frames
Binning 1x1
Total integration time = 1 hours and 25 minutes

Captured with APT
Guided with PHD2
Processed in Nebulosity, Fitsworks, and Photoshop 

Equipment
Telescope:     Sky-Watcher Explorer-150PDS
Mount:         Skywatcher EQ5
Guide Scope:     Orion 50mm Mini
Guiding Camera:     ZWO ASI120MC
Imaging Camera:  ZWO ASI1600MC Pro
Baader Mark-III MPCC Coma Corrector
Light pollution filter

[assouptro]

I like this, great composition and detail for the time allowed.

thanks for sharing 

Bryan