Sunday, September 16, 2018

Cocoon Nebula Wide Field


In this crowded starfield covering over 2 degrees within the high flying constellation Cygnus, the eye is drawn to the Cocoon Nebula. A compact star forming region, the cosmic Cocoon punctuates a long trail of obscuring interstellar dust clouds. Cataloged as IC 5146, the nebula is nearly 15 light-years wide, located some 4,000 light years away. Like other star forming regions, it stands out in red, glowing, hydrogen gas excited by the young, hot stars and blue, dust-reflected starlight at the edge of an otherwise invisible molecular cloud. In fact, the bright star near the center of this nebula is likely only a few hundred thousand years old, powering the nebular glow as it clears out a cavity in the molecular cloud's star forming dust and gas. But the long dusty filaments that appear dark in this visible light image are themselves hiding stars in the process of formation that can be seen seen at infrared wavelengths.

Optics: Vixen ED81s @ f/5.2
Mount: Skywatcher HEQ5 synscan Pro
Guiding: SBIG ST2000XM ST4
Camera: SBIG ST2000XM
Filter Wheel: SBIG CFW9
Filters: Baader Ha, Astronomik LRGB
CCD Temperature: -10 degrees Celsius
Constellation: Cygnus
Date: Aug 19, 2018
Location: Sekoulas - Ileia - Greece - Albireo Observatory 2
Exposure
L: 10x10 min bin 1x1
R:G:B: 10x5 min bin 2x2
Calibration: Darks, Flats, Bias


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