NGC 6910 is an open star cluster and about the same distance as IC 1318, known as Gamma Cygni Nebula. The core radius of the cluster is 0.8 parsec (2.6 light years), while the tidal radius is 4.2 parsecs (13.7 light years) and represents the average outer limit of NGC 6910, beyond which a star is unlikely to remain gravitationally bound to the cluster core.
Sadr also known as Gamma Cygni is part of the constellation cygnus and the brightest star in the image. The star is about 1'500 light years away and is a F8 spectral type star.
Source:
NGC 6910
Gamma Cygni
Image on Astrobin: https://www.astrobin.com/flews6/
Setup
Main Deep-Sky Setup
Telescope / Camera Lens
UNC Newton 200/1000
Camera
Omegon veTEC571c
Mount
Skywatcher EQ6-R pro
Filter
Bayer matrix
Integration Time
162 x 180 s = 8 h 6 min
Comments
Some Tilt in the top right corner.
Type of Main Object
Emission Nebula, Dark Nebula and Star Cluster
Constellation
Cygnus
Observation Site
Goldau, CH
Bortle Class 4
Date
10. & 14. June 2023
