Nightscapes & Deep Sky
Brian A. Morganti
Western Loop of Veil Nebula
About 10,000 years ago, a supergiant star in the
constellation Cygnus exploded as a supernova. Despite its
distance of about 2,500 light-years, the supernova may have shown as
bright as the moon for weeks, but no records of its observation have
been discovered. The gas expelled by this explosion has been
expanding as a giant bubble, now colliding with hydrogen, oxygen,
and sulfur gases that were previously shed by the dying star.
The collision creates a shock front, exciting the gases similar to
an emission nebula with red hydrogen and teal oxygen.
Date & Location: August 28 &
- Bernville, PA
Weather: 60F & 53F with light winds on
Sky Conditions: Clear with above
average transparency on 28th, average 29th.
Optics: TeleVue NP101is Refractor
w/1.5x extender = 810mm @ f8.1
Filter: Astronomic EOS
clip-in CLS-CCD (Light
Guiding: Tracked, PEC active, no
Camera: Canon T1i (500D) Hap
Griffin Modified - Baader UV/IR
Exposure: 28th = 55min iso 1600 /
19th = 148 min iso 1600 (Total 3 hours 23 min)
Calibration Frames: 16 Darks & 9
Processing: Images Plus 3.82b,
Photoshop CS4, NIK, Noise Ninja, GradientXTerm.
Comments: Photographed on
both nights just as the Veil Nebula had crossed the meridian so
as to avoid a meridian flip. Maximum exposure was 15 min,
but most averaged 10 minutes each.
Nightscapes & Deep Sky Colors