Some more old data off the hard drive – this time from 3rd March 2011 – 47 sub-exposures at 5-minutes per sub using the Sky90 and M25C combo. NGC7788 and NGC7790 a pair of open clusters in Cassiopeia – North is to the right in this image. You can also see a small region of emission nebulosity which I can’t find on The Sky 6. Anybody know what it is?
You will see in the comments below that Tom How identified it correctly as SH2-168. The reference to CTB1 is an “in joke” 🙂