M8 - The Lagoon Nebula
From the author of Sizing Up The Universe
22:40 EDT Jun 18, 2006.
Starlight Express SXV-H9 on Tak FSQ106 at f/5.
Hα = 80 min, OIII = 60 min.
Limiting sky mag:
Hα=16.2, O-III = 17.1.
L = Hα + OIII, R = Hα,
G = B = OIII
(guided 4-minute subexposures under mag. 3 skies).
Lucy-Richardson, Log stretch.