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Contains:  NGC 6995, Network nebula, NGC 6992, IC 1340, Veil nebula, Lace-work nebula, Filamentary nebula, NGC 6960, The star 52Cyg
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The Veil Nebula in Halpha, 


            Gabe Shaughnessy
The Veil Nebula in Halpha

The Veil Nebula in Halpha

Technical card

Resolution: 5717x4315

Dates:Oct. 10, 2016

Frames:Ha 3nm: 24x900" bin 1x1

Integration: 6.0 hours

Avg. Moon age: 8.64 days

Avg. Moon phase: 63.20% job: 1925250

RA center: 312.917 degrees

DEC center: 30.671 degrees

Pixel scale: 2.727 arcsec/pixel

Orientation: 0.668 degrees

Field radius: 2.713 degrees

Data source: Backyard


The Veil nebula is a supernova remnant in the constellation Cygnus about 1500 ly away. This image shows the Hydrogen alpha (Ha) emission and contains NGC6992 and NGC6995 collectively known as the Network nebula on the left, and the Witch's Broom, NGC6960, which is close to the bright foreground star 52 Cygni on the right.

The progenitor supernova exploded an estimated 5000-8000 years ago and the full diameter is 3 degrees, giving a size of around 50 ly. The remnant emits radio, infrared, visible light and is also a very bright source of X-rays. As with the Western Veil nebula, the emission filaments are thought to be the edge-on view of the thin shell of expanding gas. The entire 3 degree field contains this gas, but it's only in this edge-on view that the shell is visible. The supernova must've been quite a site to our ancestors. For reference, it's about 4.3x closer than the supernova that left the Crab nebula remnant, M1, in 1054 AD, which had an apparent magnitude of -6.5 at it's peak. For supernovae with the same intrinsic brightness, this would give a 18x increase in brightness, or around 3.2 magnitudes.

This is a reprocess of old data in the H-alpha channel only. Here is the HOO version



Gabe Shaughnessy
License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


The Veil Nebula in Halpha, 


            Gabe Shaughnessy