Ru173 is a sparse open cluster located in Cygnus, near epsilon Cygni. See chart 120 of Uranometria 2000, Volume 1.
Taken with my StellarVue SVQ100 astrograph, ZWO 183MM PRO camera (Camera gain of 50),
and AstroDon LRGB filter set. All exposures were of 60 second duration.
Frame count per filter:
Luminance: 70 image frames
Red, Green, Blue: 35 image frames per filter
The full resolution image is at:
Not sure if I am doing a good job saturating the star color. I did use the PixInsight MorphologicalTransformation tool
to reduce the star background, which seems to have worked pretty well.