Here is the Rosette Nebula (Caldwell 49), an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula’s gas and dust. The system lies some 5200 light years from earth.
This is a false color image (although generally accurate), with Hydrogen Alpha mapped to Red, Oxygen III mapped to Green, and Sulfur mapped to Blue. Click the image for a larger version.
This image quality is a significant improvement over the previous version of this target.
Image Info
- Imaged from the KPO field in Saint Cloud, Florida.
- Camera : ZWO ASI1600MM Pro
- Lens: Canon 100-400 f/5.6L lens, set to 400mm
- Mount: iOptron SmartEQ Pro
- Hydrogen Alpha: 24 subframes of 300s = 120 min integration
- Oxygen III: 24 subframes of 300s = 120 min integration
- Sulfur: 23 subframes of 300s = 115 min integration
- Total integration time: 355 min = 5.9 hours.
- Captured via ASIAir Pro automation
- Optical tracking via ASIAir automation, currently using ST4 mount control via the ASI120MM-S guide camera
- Separate channels stacked and SHO integrated in Astro Pixel Processor
- Final processing in Aperture