NGC7635, The Bubble Nebula
big? Try this smaller image: NGC6559
Takahashi FS-152 f/8 fluorite refractor at f/8.
II German Equatorial Mount
Barbara Instrument Group ST-8E NABG CCD camera (1530 x 1020 pixels, 9 x 9mm, monochromatic, 16 bit, 13.8 x 9.2mm array)
color filter wheel with IR-blocking red, green, blue and Hydrogen-Alpha
(deep red) dichroic filters
Friday August 17, 2001
Mt. Pinos, CA
Approx. 8300', OAT +46F
time: 4.2 hours
(Ha+R)GB (100:50:50:50 minutes)
exposures were 10 minutes each.
is to the right.