Hemisphere:  Northern  ·  Contains:  IC 1340  ·  NGC 6960  ·  NGC 6979  ·  NGC 6992  ·  NGC 6995  ·  The star 52Cyg  ·  Veil Nebula
Cygnus Loop - A Stellar Death, 


            Andrei Gusan
Cygnus Loop - A Stellar Death
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Cygnus Loop - A Stellar Death

Technical card

Imaging telescopes or lenses: Williams Optics RedCat 51

Imaging cameras: ZWO 1600mm Cooled Pro

Mounts: HEQ5 Pro

Guiding cameras: ZWO ASI120MM mini

Software: Lightroom  ·  Photoshop  ·  PixInsight

Filters: Astronomik 1.25" Ha 6nm  ·  Astronomik 1.25" OIII 6nm

Accessory: ZWO EFW 1.25" 8 positions

Astronomik 1.25" Ha 6nm: 169x240" (gain: 70.00) -20C bin 1x1
Astronomik 1.25" OIII 6nm: 88x240" (gain: 70.00) -20C bin 1x1

Integration: 17.1 hours

Darks: ~50

Flats: ~25

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 3738132

RA center: 20h 51' 25"

DEC center: +30° 41' 24"

Pixel scale: 3.156 arcsec/pixel

Orientation: 359.310 degrees

Field radius: 2.449 degrees

Resolution: 3310x4502

Data source: Backyard


More than ten thousand years ago a new light would have suddenly have appeared in the night sky announcing one of the most violent cosmic event: death explosion of a massive star, also known as supernova. For a week or so the supernova outshined all of the other stars in our galaxy. Then it quickly faded away and all that was left was a tiny, dense object – a neutron star or a black hole (we don't know yet) surrounded by an expanding cloud of very hot ionized gas and dust. The elements made inside the supergiant (such as oxygen, carbon and iron) are scattered through space. This stardust eventually makes other stars, planets and possibly life, just like you and me. Yes! We, and everything you see around you, are all made of star dust!

This cosmic ghost picture was taken from my backyard during several short summer nights with a wide field lens and a dedicated mono astro-camera used with special narrow band filters. I needed more than 17 hours total exposure and few more hours of post processing to capture all those fine human-eye invisible tiny details.

The object is known as The Veil Nebula and it's located in the constellation Cygnus. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter of the full Moon). Recent direct astrometric measurements concluded that it's located at 2400 light-years away from our planet.



Andrei Gusan
License: None (All rights reserved)

Sky plot

Sky plot


Cygnus Loop - A Stellar Death, 


            Andrei Gusan