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Contains:  North America nebula, NGC 7000, NGC 6997
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NGC 7000 - North America Nebula (Southern States), 





    
        

            urmymuse
NGC 7000 - North America Nebula (Southern States)

NGC 7000 - North America Nebula (Southern States)

Technical card

Resolution: 10020x6460

Dates:Sept. 6, 2019

Frames: 20x300"

Integration: 1.7 hours

Avg. Moon age: 7.73 days

Avg. Moon phase: 53.73%

Astrometry.net job: 3250963

RA center: 20h 58' 45"

DEC center: +44° 20' 31"

Pixel scale: 0.549 arcsec/pixel

Orientation: 80.547 degrees

Field radius: 0.908

Data source: Backyard

Description

Just less than two hours grabbed between the clouds

Historic event though - my first meridian flip !

Using my modded 7D and duo narrow band filter - bad coma round edges

The North America Nebula is REALLY big so this just a bit of it I think

The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico. It is sometimes incorrectly[citation needed] called the "North American Nebula".
The North America Nebula is large, covering an area of more than four times the size of the full moon; but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3°) will show it as a foggy patch of light under sufficiently dark skies. However, using a UHC filter, which filters out some unwanted wavelengths of light, it can be seen without magnification under dark skies. Its prominent shape and especially its reddish color (from the hydrogen Hα emission line) show up only in photographs of the area.

The portion of the nebula resembling Mexico and Central America is known as the Cygnus Wall. This region exhibits the most concentrated star formation.

The North America Nebula and the nearby Pelican Nebula (IC 5070) are parts of the same interstellar cloud of ionized hydrogen (H II region). Between the Earth and the nebula complex lies a band of interstellar dust that absorbs the light of stars and nebulae behind it, and thereby determines the shape as we see it. The distance of the nebula complex is not precisely known, nor is the star responsible for ionizing the hydrogen so that it emits light. If the star inducing the ionization is Deneb, as some sources say, the nebula complex would be about 1,800 light-years' distance, and its absolute size (6° apparent diameter on the sky) would be 100 light-years.

The nebula was discovered by William Herschel, from Slough, England, on October 24, 1786 or by his son John Herschel before 1833.

Comments

Author

urmymuse
urmymuse
License: None (All rights reserved)
671
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Revisions

  • NGC 7000 - North America Nebula (Southern States), 





    
        

            urmymuse
    Original
  • NGC 7000 - North America Nebula (Southern States), 





    
        

            urmymuse
    C
  • Final
    NGC 7000 - North America Nebula (Southern States), 





    
        

            urmymuse
    D

C

Strengthened blacks and reds to improve contrast on foreground dust Bit more de noise Reduced stars a tad

D

Whilst reloading my images following the great data loss I thought this one could probably be significantly improved on so started from scratch Swapped colour channels round , reduced stars , better noise reduction

Sky plot

Sky plot

Histogram

NGC 7000 - North America Nebula (Southern States), 





    
        

            urmymuse

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