M46 - Open Cluster with Planetary Nebula (NGC 2438)
From the author of Welcome to the Universe in 3D
21:30--22:25 EDT Apr 22, 2011.
Starlight Express SXV-H9 on 4" Tak FSQ refractor at f/5.
R = 10x15 sec, G = 10x15 sec, B = 10x15 sec,
Hα = 30x15 sec + 5x2 min
O-III = 30x15 sec + 5x2 min
(unguided).
Richardson Lucy deconvolution.