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Rosette Nebula



 

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Rosette Nebula. Click image for full size version.

 


Common Name Rosette Nebula
Formal Name NGC 2237 / Caldwell 49 / Sh2-275
Date 11/29/2014
Constellation Monoceros
Location BrewSky Observatory, Casa Grande, AZ
Equipment Takahashi Sky90 on Paramount MX, SBig 2000XM Camera/Filter Wheel
Temperature −15°C
Exposures
# Exp (sec) Filter Bin Net Time (hr)
15 600 Blue 1x1 2.5
15 600 Red 1x1 2.5
12 600 Green 1x1 2.0
14 600 Lum 1x1 2.4
14 600 OIII 1x1 2.2
Total 13.3 hrs
Processing Calibrated in Maxim during ACP data collection
Processed in PixInsight
Used Gerald's Nebula Enhancement Technique
Notes
  • Unguided exposures using TPoint model on Paramount MX.
  • Distance 5200 ly.
  • Radius 65 ly, much larger than the Orion Nebula (12 ly).
  • Open cluster of stars in the center (NGC 2244) were formed from the nebula’s matter in the last five million years. The gas surrounding these stars has a temperature of 6 million kelvins and as a result the stars emit intense amounts of X-ray radiation.

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2004 Version

Common Name Ring Nebula
Formal Name M 57
Date 2/6/2005
Constellation Monoceros
Location Ionia, NY
Equipment Takahashi Sky90, piggybacked on Nexstar 11GPS, SBig 2000XM Camera/Filter Wheel
Temperature −25°C
Exposures
# Exp (sec) Filter Bin Net Time (hr)
6 180 Blue 1x1
10 180 Red 1x1
9 180 Green 1x1
9
5		 300
180		 Lum 1x1
Total 2.25 hrs
Processing Calibrated, Aligned in CCDSoft
Stacked (Adaptive Addition) in Images Plus
Adjusted Levels and Curves in Photoshop
Notes

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