NGC6781
From the author of Sizing Up The Universe
21:49 EDT Aug 26, 2014.
Starlight Express SXV-H9 on 10" RC at f/9.
Hα = 114 min,
O-III = 102 min
(guided 3-minute subexposures).
21:49 EDT Aug 26, 2014.
Starlight Express SXV-H9 on 10" RC at f/9.
Hα = 114 min,
O-III = 102 min
(guided 3-minute subexposures).