The Elephant’s Trunk Nebula – IC1396 (HST)

IC 1396 is a very large emission nebula in the constellation Cepheus. It is 3,000 light-years from our Earth. The most famous part of the nebula is a huge dark molecular cloud named the Elephant Trunk Nebula. Its shape was created by a stellar wind. The Elephant Trunk object is just a cut-out of an extensive emission nebula, which is popular in astrophotography.

Telescope ASA 10″ F/3.6 10N ASTROGRAPH OTA
Focal length 900 mm
Mount G53f
Imaging camera Atik 460EX mono
Guiding cameras Lodestar X2 -Autoguider
Guiding optics ASA 10″- OAG
Focal reducers ASA 3″ Wynne Corrector 0,85x
Constellations crop of the area the Nebula in Cefeus
Distance 3000 light years
RA center 21h 39′ 23″
DEC center +57°32′ 43″
Location taken Slovakia
Date taken 10/2020
Pixel scale 1.04 arcsec/pixel
Filters Astronomik Ha 6nm ,
Astrodon OIII 5nm,
Astrodon SII 5nm,
Exposure 63x600s BIN1 Ha filter
32x1200s BIN2 OIII filter
39x1200s BIN2 SII filter
Total exposure 34 hours
Processing software PixInsight, CCD Inspector

The processing object IC 1396 was captured using narrowband filters.
(Hydrogen-alpha – H-α 6 nm, Sulfur – SII 6 nm, Oxygen – OIII 5 nm)
Here you see a few hours of individual images, which are processed by joining in Hubble (Narrowband in Hubble Palette). Photos are only gently stretched (CurvesTransformation).
You can see the final product above.