23/12/2023
The Rosette Nebula SH2-275
This nebula can be described as a thin, layered disc of stellar gasses with a central hole blown out by the stellar winds from NGC2244, the central cluster of young stars
I like the look of the hole in this image where you can see through the layer of Oiii (Oxygen) and the plasma bubble to the Ha on the other side. The Oxygen rich layer appears to be sandwiched on both sides by Ha (hydrogen).
Quick factoids:
5000 ly away 130ly across
Found in the constellation Monoceros
Large star in foreground is Mon12 a k class giant star
Three behind are O type hypergiant stars,
burning at 30-50,000K,
With a mass of around 10,000 suns and around 400,000 brighter than our sun
Together their radiation and solar winds are superheating the bright blue plasma bubble to somewhere around 5 million Kelvin in temp
There are over 2500 new stars forming in the top left quadrant alone
Also known as the Skull nebula
The dark dust clouds in the foreground are known as Bok globules
SHO palette
600s subs
Ha for Lum detail and stars
Siii 10hrs40
Ha 11hrs 40
Oii 6hrs 20
total integration 28hrs40
Taken with:
Skywatcher Quattro CF 200 f4
Skywatcher EQ6r-pro Hypertuned by Brendan Mitchell Astronomy Academy Perth / Starpoint Australis
ZWO ASI2600
Antlia 3nm NB filters
Televue parracor II
ZWO EFW, EAF, ASIAIR pro
Full resolution image at
https://www.astrobin.com/onlbq6/
I hope you enjoy it 😊
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