 |
NGC 6992 - The Network Nebula in Cygnus
|
Copyright 2008 Hap Griffin
The Network Nebula
is the eastern portion of the much larger complex known as the Veil Nebula
complex. It is caused by an expanding shockwave from a supernova that
exploded in the area some 10,000 years ago. The Nebula is not part of the
remains of the original supernova star, but the result of the expanding
shockwave interacting with pre-existing gases in the area heating them to
millions of degrees and causing them to glow with their characteristic
colors.
NGC6992 lies at a distance of 1500 light years.
Date/Location:
October 31, 2008 Griffin/Hunter
Observatory Bethune, SC
Instrument: Canon 40D (modified) Digital SLR through Orion
10" Newtonian on an Astro-Physics AP-1200 mount
Focal Ratio: f/4.7
Guiding: Auto through Takahashi FS-102NSV w/ SBIG ST-402
Conditions: Visually clear
Weather: 50 - 32 degrees F, still
Exposure: 303 minutes @ ISO 1600 (101 x 3 min exposures)
Filters: Baader UV/IR block internal to camera
Processing: Focused, captured, RAW conversions, frame
calibrations, alignment, Digital Development with ImagesPlus
v3.50a. Final tweaking with Photoshop CS2.