Daily Archives: April 22, 2015

IC1396 HA-SHO, Elephant 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. 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.

Imaging telescopes or lenses: TS 90mm F6.6 APO Triplet – 2.5 “focuser
Imaging cameras: SBIG 8300M
Mounts: AZ EQ6 GT SkyWatcher‎
Guiding telescopes or lenses: TS APO65Q 65mm F/6,5 Quadruplet Astrograph
Guiding cameras: Orion Starshoot Autoguider Orion Autoguider
Focal reducers: TS-Flattener 2,5″
Software: PixInsight
Filters: Baader 7nm Ha Ø 36,  Baader SII 8nm Ø36,  Baader OIII 8.5nm Ø36
Accessories: Orion Star Shoot Auto Guider Orion Starshoot Auto-Guider,  SBIG Filter Wheel FW8-8300
Resolution: 1198×1240
Dates: April 10, 2015
Baader 7nm Ha Ø 36: 20×900″ -10C bin 1×1
Baader OIII 8.5nm Ø36: 13×900″ bin 1×1
Baader SII 8nm Ø36: 13×900″ bin 1×1
Integration: 11.5 hours
Avg. Moon age: 19.96 days
Avg. Moon phase: 72.49%
Bortle Dark-Sky Scale: 9.00
RA center: 324.483 degrees
DEC center: 57.480 degrees
Pixel scale: 3.706 arcsec/pixel
Orientation: -93.058 degrees
Field radius: 0.888 degrees
Locations: centre ville, ANTIBES, 06, France

Author: Stéphan & Fils

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