Elephant’s Trunk Nebula

Posted by on Dec 9, 2018

Elephant’s Trunk Nebula

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.

Raw images:
Ha: 10 x 15min (Tot: 150min) Bin:1x1
OIII: 10 x 10min (Tot: 80min) Bin:2x2
SII: 8 x 10min (Tot: 80min) Bin:2x2
Seeing: 2-3"

Equipment used:
ASA N12 Astrograph F/3.6
3" Wynne Corrector 0.95x
Moravian G3 camera @-28C
No guiding

Filter:
Astrodon Ha 3nm, OIII 5nm, SII 5nm

Location/Date:
Valla Observatory (FROSON, Sweden) Nov 15, 2018

Image processing:
Images calibrated and processed in AstroPix and Photoshop
Curves and levels in AstroPix
Color image with Photoshop
Color from starless Ha,SII and OIII images
Noise removal with the AstroPix Noise removal tool.

Image palette:
Gold and turquoise palette
Luminance - Ha as luminance layer

Image information:
Scale: 1.14 arcsec/pix
FOW: 80x70 arcmin

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