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Contains:  Helix nebula, NGC 7293
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NGC7293 Helix Nebula, 





    
        

            Jerry Macon
NGC7293 Helix Nebula

NGC7293 Helix Nebula

Technical card

Resolution: 3030x2850

Dates:Nov. 2, 2018Nov. 10, 2018

Frames:
Astrodon Gen 2 L 36mm: 160x240" (gain: 99.00) -15C bin 1x1
Astrodon Gen 2 RGB 36mm: 192x240" (gain: 99.00) -20C bin 1x1

Integration: 23.5 hours

Avg. Moon age: 13.43 days

Avg. Moon phase: 19.20%

Bortle Dark-Sky Scale: 4.00

Temperature: 5.00

Astrometry.net job: 2511328

RA center: 337.434 degrees

DEC center: -20.836 degrees

Pixel scale: 0.700 arcsec/pixel

Orientation: 87.751 degrees

Field radius: 0.404 degrees

Locations: Dark Star Observatory, Taos, New Mexico, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Imaged on nights of 2018-11-1, 2018-11-2, 2018-11-2, 2018-11-5, 2018-11-6, 2018-11-8, 2018-11-10, 2018-11-12, 2018-11-13.
The RGB were taken on the AG12+ASI1600MM at .70 asec/pix, the L on TV127is+ASI183MM at .75 asec/pix.

The Helix Nebula, also known as The Helix, NGC 7293, is a large planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding, probably before 1824, this object is one of the closest to the Earth of all the bright planetary nebulae. The estimated distance is about 700 light-years. It is similar in appearance to the Cat's Eye Nebula and the Ring Nebula, whose size, age, and physical characteristics are similar to the Dumbbell Nebula, varying only in its relative proximity and the appearance from the equatorial viewing angle. The Helix Nebula has sometimes been referred to as the "Eye of God" in pop culture, as well as the "Eye of Sauron".

The Helix Nebula is an example of a planetary nebula, formed by an intermediate to low-mass star, which sheds its outer layers near the end of its evolution. Gases from the star in the surrounding space appear, from our vantage point, as if we are looking down a helix structure. The remnant central stellar core, known as a planetary nebula nucleus or PNN, is destined to become a white dwarf star. The observed glow of the central star is so energetic that it causes the previously expelled gases to brightly fluoresce.

Comments

Author

jmacon
Jerry Macon
License: Attribution Creative Commons
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            Jerry Macon
    Original
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    NGC7293 Helix Nebula, 





    
        

            Jerry Macon
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NGC7293 Helix Nebula, 





    
        

            Jerry Macon