The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.
It constitutes the visible portions of the Cygnus Loop , a large but relatively faint supernova remnant.
The source supernova exploded circa 3,000 BC to 6,000 BC, and the remnants have since expanded to cover an area roughly 3 degrees in diameter (about 6 times the diameter, or 36 times the area, of the full moon).
The distance to the nebula is not precisely known, but Far Ultraviolet Spectroscopic Explorer (FUSE) data supports a distance of about 1,470 light-years.(WIKI)

This is a single frame covering about 3X3 degrees of the sky.

Please look at the "Original" resolution app' 4000X3665 pixels

Ha - 11 hrs @ Bin 1
S2,O3 180 min @ Bin 2
RGB - 30 min each @ Bin2

Total about 18.5 HRS

Some parts were enhanced with previous high resolution older images...

Takahashy FSQ 106 with reducer
ASA DDM 60 mount (NO guiding...)

Moravian G3 16200 camera
Baader filters

Imaged from my home in Gan-Yavne, ISRAEL