NGC 6946 - The Fireworks Galaxy and NGC 6939 - Open star cluster

NGC 6946 - The Fireworks Galaxy and an open star cluster (NGC 6939) both in the constellation of Cepheus.
The Fireworks Galaxy is about 18 Million light-years away from earth and is a small spiral galaxy at only 40,000 light-years across (about 1/3 the size of our Milky Way Galaxy).
The open star cluster is much closer to us at a distance of only about 6,000 light-years.

Image acquisition and processing information:

Date: July 24th, 2015
Telescope: Celestron C11 telescope using a Hyperstar v3 lens
Mount: Celestron CGE Pro
Camera: QHY 9 M Mono CCD camera equipped with a 2" five position filter wheel
Image acquisition software: Maxim DL
Exposures: 10 two-minute exposures unbinned luminance and 10 one-minute exposures each binned 2x2 using red, green and blue filters
Guiding: Telescope: AstroTech AT72ED, Camera: Starlight Xpress Trius Pro 814 CCD, Software: Maxim DL
Image processing Software: PixInsight v. 1.8.4