NASA, Astronomy Picture Of The Day, part IIhttp://apod.nasa.gov/apod/ap081107.html Imaging data:
Camera, QHY8 - Filters, Baader 7nm H-alpha, Baader 8,5nm O-III and Baader 8nm S-II - Optics, Tokina AT-X 300mm @ f2.8 - Exposures, 4X 1200s H-alpha, 3 X 1200 O-III and 2X1200s S-II + flats and bias - Guiding, LX200 GPS 12" + PHD-guiding and Lodestar
