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IC 1396 Elephant Trunk Nebula (Starless), 





    
        

            Randal Healey

IC 1396 Elephant Trunk Nebula (Starless)

Technical card

Resolution: 2467x2907

Dates:Sept. 3, 2018Sept. 4, 2018

Frames:
Astrodon LRGB Gen2 E-Series Tru-Balance Filters: 80x300" -10C bin 1x1
Astrodon HA 36mm - 5nm: 20x600" -10C bin 1x1
Astrodon Olll 36mm - 3nm: 22x600" -10C bin 1x1

Integration: 13.7 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 23.08 days

Avg. Moon phase: 40.21%

Astrometry.net job: 2585616

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory

Description

The Elephant's Trunk nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth. The piece of the nebula shown here is the dark, dense globule IC 1396A; it is commonly called the Elephant's Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star (HD 206267) The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays. I hope you enjoy. Removing the stars took some work but I think it was worth the effort.

Randy Healey

Comments

Author

RandalHealey
Randal Healey
License: None (All rights reserved)
1721
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IC 1396 Elephant Trunk Nebula (Starless), 





    
        

            Randal Healey