Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  IC 1396  ·  The star Garnet Star (μCep)
IC 1396, 


IC 1396
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IC 1396

IC 1396, 


IC 1396
Powered byPixInsight

IC 1396


Imaging Telescopes Or Lenses
iTelescope.Net T12 (FSQ-106ED)
Imaging Cameras
Software Bisque Paramount GT1100S
AstroDon Tru-Balance E-Series Luminance · AstroDon Tru-Balance E-Series Blue · AstroDon Tru-Balance E-Series Green · AstroDon Tru-Balance E-Series Red · AstroDon Tru-Balance H-alpha 5 nm

Acquisition details

Sept. 10, 2013
AstroDon Tru-Balance E-Series Blue: 5x300" (25') -10°C bin 1x1
AstroDon Tru-Balance E-Series Green: 5x300" (25') -10°C bin 1x1
AstroDon Tru-Balance E-Series Luminance: 17x300" (1h 25') -10°C bin 1x1
AstroDon Tru-Balance E-Series Red: 5x300" (25') -10°C bin 1x1
AstroDon Tru-Balance H-alpha 5 nm: 17x600" (2h 50') -10°C bin 1x1
5h 30'
Avg. Moon age:
5.05 days
Avg. Moon phase:
Bortle Dark-Sky Scale:

Basic astrometry details

Astrometry.net job: 104098

RA center: 21h39m47s.8

DEC center: +57°3458

Pixel scale: 3.483 arcsec/pixel

Orientation: -88.185 degrees

Field radius: 2.265 degrees

Resolution: 3973x2483

Locations: iTelescope.Net - New Mexico, Mayhill, NM, United States


The Elephant's Trunk is a star-forming region 3000 light years away in IC 1396 in Cephus. The Trunk is the vertical structure near the bottom center, while IC 1396 is the entire ring complex. Look for tiny outlying red star forming globules in the fringes. This is an image in standard HaLRGB taken between May and December 2012, and processed tonight by me in PhotoShop. L=17x300 Ha=17x600 RGB=5 x 300 @ bin2. H-Alpha was used to augment both the Luminance and the Red channel. You've probably seen the Elephant's Trunk more commonly imaged in narrowband, such as this NASA APOD:


The bright star in the upper right is Herschel's Garnet Star, a red supergiant that is one of the largest known stars by radius. It has twice the radius of Betelgeuse, and approaches VY Canis Majoris as the largest sized star overall. If it were at the center of our solar system, the surface of the star would extend beyond Jupiter's orbit and about half way to Saturn's. It's *BIG*. It will go supernova and collapse to a black hole soon (in astronomical terms) -- in the next few million years.


Sky plot

Sky plot


IC 1396,