IC1396: Elephant Trunk Nebula

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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 that is just to the west of IC 1396A. (In the Figure above, the massive star is just to the left of the edge of the image.) 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.

Imaging telescopes or lenses: Takahashi FSQ85-ED, Sky-Watcher 80ED
Imaging cameras: QSI 583 wsg, Starlight Xpress SXVH9
Mounts: Losmandy G11 , Sky-Watcher NEQ6
Guiding telescopes or lenses: Takahashi FSQ85-ED, Sky-Watcher 80ED
Guiding cameras: The Imaging Source DMK21AU618.AS, QSI 583 wsg
Filters: Astrodon OIII 5nm, Astrodon SII 5nm, Astrodon H-alpha 5nm, Custom Scientific H-Alpha 4.5nm
Dates: June 19, 2011
Frames:
Custom Scientific H-Alpha 4.5nm: 6×1800″ bin 1×1
Astrodon H-alpha 5nm: 6×1800″ bin 1×1
Astrodon OIII 5nm: 7×1800″ bin 1×1
Astrodon SII 5nm: 7×1800″ bin 1×1
Integration: 13.0 hours
Autor: Andre van der Hoeven, Daniel Verloop

AstroPhotography of the day by SPONLI

9 January 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.