ASTRO:
     type=Supernova remnant,
     const=Cygnus,
     mag=7.0,
     dist=2400 ly,
     size=130 ly (all Cygnus Loop)
IMAGE:
     location=EB Driveway, BrtlCls=4;
     moon=70% WxGb;
     exposure=CMOS OSC: 41x300s (3.4h), G100
EQUIPMENT:
​     optics=ES102CF APO / Stellarvue 1.0x fld-fltnr, FL=714mm, f/7.0
     camera=ZWO ASI2600MC-Pro
     filter=Optolong L-eXtreme Duo NB
     mount=Celestron AVX;
     guiding=Orion 60x240mm, ZWO ASi244MC
SOFTWARE:
     acquisition=Stellarium, APT, PHD2,
     processing=PixInsight (RCAstro, SetiAstro), Photoshop (Lumenzia, APF-R), LrC

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus.  It makes up the visible portions of the Cygnus Loop, a supernova remnant (or SNR), many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than our Sun and is believed to have exploded appx 15,000 years ago.  At the time of explosion, the supernova would have appeared brighter than Venus in the sky and been visible in daytime.  The SNR has since expanded to cover an area of the sky roughly 3 arc-degrees in diameter (about 6 times the diameter of the full Moon).  The nebula lies appx 2400 light-years away from Earth.

The Hubble Space Telescope captured several images of the nebula. The analysis of the emissions from the nebula indicates the presence of the elements, oxygen, sulfur, and hydrogen.  The Cygnus Loop is also a strong emitter of radio waves and x-rays.

In this image, only a western portion of the 'Loop' is visible and includes the segment often referred to as, "The Witches Broom".  Another image in this collection, "211105 - C33 Eastern "Veil" nebula" shows an eastern portion.

In modern usage, the names Veil Nebula, and Cygnus Loop generally refer to all the visible structure of the entire nova remnant. The whole structure is so large that several NGC numbers have been assigned to various parts of the nebula.  The image "230522 - Cygnus Loop Cloud Complex" shows the entire remnant.

240715 - C34 Western "Veil" nebula