Getting plate-solving status, please wait...
NGC 6995 - HaOIII, 


            Thomas Richter

NGC 6995 - HaOIII

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Technical card

Imaging telescopes or lenses: GSO 8" f/5 Newton

Imaging cameras: ZWO ASI 183 MM PRO

Mounts: SkyWatcher NEQ6 Pro Goto

Guiding telescopes or lenses: GSO 8" f/5 Newton

Guiding cameras: Astrolumina Alccd5L-IIc

Focal reducers: Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software: PhotoShop CS5  ·  PHD2 Guiding  ·  FitsWork 4  ·  DeepSky Stacker Deep Sky Stacker 3.3.4  ·  CCDCiel

Filters: Baader Planetarium O3 1.25" 8.5nm  ·  Baader Ha 1.25" 7nm

Accessory: TSOptics TS Off Axis Guider - 9mm

Dates:June 26, 2020

Baader Ha 1.25" 7nm: 7x600" (gain: 200.00) -20C bin 1x1
Baader Planetarium O3 1.25" 8.5nm: 7x600" (gain: 200.00) -20C bin 1x1

Integration: 2.3 hours

Darks: ~37

Flats: ~25

Flat darks: ~100

Avg. Moon age: 5.41 days

Avg. Moon phase: 29.58%

Basic astrometry details job: 3636925

Resolution: 5496x3672

Locations: Nürnberg, Nürnberg, Bayern, Germany

Data source: Backyard


Object description (

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 supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun, and it exploded between 10,000 and 20,000 years ago. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800 light-years, a recent determination of 2400 light-years is based on direct astrometric measurements. (The distance estimates affect also the estimates of size and age.)

The Hubble Space Telescope captured several images of the nebula. The analysis of the emissions from the nebula indicate the presence of oxygen, sulfur, and hydrogen. The Cygnus Loop is also a strong emitter of radio waves and x-rays.
On 24 September 2015 new images and videos of the Veil Nebula were released by the Space Telescope Science Institute, with an explanation of the images.



  • NGC 6995 - HaOIII, 


            Thomas Richter
  • Final
    NGC 6995 - HaOIII, 


            Thomas Richter


NGC 6995 - HaOIII, 


            Thomas Richter