Taken 5-Nov-16
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Dimensions3247 x 2436
Original file size1.37 MB
Image typeJPEG
Color spaceUncalibrated
IC 1396 • Elephant Trunk Nebula

IC 1396 • Elephant Trunk Nebula

Other Names: SH2-131
Optics: Borg 101ED at f/4.1
Mount: Paramount MX using The SkyX Pro
Camera: QSI 683WS-8
Filters: Astrodon Ha 3nm
Exposure: 2000 Mins or 33 1/3 hours Ha, Binned 1x1, 1200s exposures
Accessories: Feathertouch focuser using FocusMax 4.1.0.40
Location: Burlington, ON
Date: Taken over several nights and several months from August 27th, to November 4th, 2016
Notes: This is the longest acquisition time I have put into one image to date. This is also my first Unguided Image using Software Bisque's TPoint & Protrack software. No guiding of any kind was used for any of the full 60 hours of acquisition. Image acquisition was done with TheSkyX Pro CAO using MaxPilote automation software.
Processing: Image calibration, align, and combine in Maxim DL Pro. Levels, curves, cosmetic adjustments and crop/resize completed in Photoshop CS5.
Calibrated w/20 Darks, 100 Bias, 50 Flats using a flat pannel. CCD temperature was -25C. Image was taken from my backyard Observatory.

Link to Narrowband: http://astromarina.zenfolio.com/p52895960/h3a8c28ad#h3a8c28ad

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.[1] 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) that is just to the west of IC 1396A. The entire IC 1396 region is ionized by the massive star, except for dense globules.