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NGC 1788 in Orion

Astrophotography from Ursa Major Observatory @ ROSA

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Reflection nebula
5’x3’
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Ori
2017-11-17+18+19+20
Astro-Physics 175mm f/8 Starfire EDF with field flattener (f=1452mm)
10micron GM3000 HPS
L 30x6 min, RGB 12x6 min each
6h 36min
Camera:
Moravian G4-16000 with Baader filters
Image acquisition by CEDIC team (Bernhard Hubl, Christoph Kaltseis, Markus Blauensteiner) Image processing by Bernhard Hubl
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NGC 1788 is a reflection nebula in the constellation Orion. NGC 1788 is an unusual reflection nebula (bluish white at the center) surrounded by a glowing red ring of hydrogen gas. The stars inside the nebula are only about a million years old, which is very young compared to most stars. The ring of glowing hydrogen gas is energized by nearby hot, massive stars.