UGC10822 Draco dwarf galaxy (neighbor to our milky way)

Last weekend on 2 nights I photographed the UGC10822 Draco dwarf galaxy. It is a neighbour of our own galaxy, the Milky Way. Standing on a distance of 263.000 light years. It has a magnitude of 9.9, but a very low surface brightness of only 17.2!!!
That makes it a very difficult object to photograph. This galaxy has intensively been studied and astronomers believe this galaxy contains large amounts of dark matter.
On the original 5h40min stack the galaxy was almost not visible. On this inverted picture you can see it. The picture also contains many faint galaxies, here are some:
UGC10854 m15.82 (bright left mid), 130 million lightyears distant.
PGC2577314 m16.38 (left top)
PGC2577420 m17.56 (left top)
PGC3136246 m16.20 (mid top), 720 million lightyears distant.
PGC2575568 m17.12 (mid top)
PGC2576050 m17.12 (mid top)
PGC4013667 m18.11 (mid top)
PGC2568758 m16.77 (mid top)
PGC3136201 m18.46 (!!!) (right top)

Used equipment: Skywatcher 200mmF5 Newtonian on NEQ6, fitted with Eos400d. Skywatcher 90mmF10 refractor used as guidescope, fitted with SC3 SPC900 with ICX-424 CCD.