M71
From the author of Welcome to the Universe in 3D
21:39 EDT Oct 1, 2021.
Starlight Express Trius-SX694 on 10" RC at f/9.
L=210 sec, R=G=B=180 sec (unguided 30 second subexposures).
Nonlinear stretch.
23:40 EDT Aug 24, 2014.
Starlight Express SXV-H9 on 10" RC at f/9.
L=800 sec, R=G=B=400 sec (unguided 20 second subexposures).
Log stretch.
23:40 EDT July 3, 2010.
Starlight Express SXV-H9 on 10" RC at f/9.
R=400 sec, G=400 sec, B=400 sec (unguided 80 second subexposures).
Log stretch, Unsharp Mask.