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Contains:  NGC 2244, Rosette nebula, NGC 2239, The star 12Mon
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The Rosette Nebula, 


            Daniel Caracache
The Rosette Nebula

The Rosette Nebula

Technical card

Resolution: 4641x3520

Dates:Jan. 11, 2018Jan. 20, 2018Jan. 22, 2018

Astrodon H-alpha 5nm: 9x600" (gain: 139.00) -20C bin 1x1
Astrodon O-III 5nm: 11x600" (gain: 139.00) -20C bin 1x1
Astrodon S-II 5nm: 11x600" (gain: 139.00) -20C bin 1x1

Integration: 5.2 hours

Avg. Moon age: 10.87 days

Avg. Moon phase: 20.58% job: 2303859

RA center: 97.983 degrees

DEC center: 4.957 degrees

Pixel scale: 0.910 arcsec/pixel

Orientation: 144.212 degrees

Field radius: 0.736 degrees

Locations: Home Red Zone, Cornet Chehwan, Lebanon

Data source: Backyard


The Rosette Nebula is an emission nebula, a large star forming region located in the constellation Monoceros, the Unicorn. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's center, insulated by a layer of dust and hot gas. Ultraviolet light from the hot cluster stars causes the surrounding nebula to glow. The Rosette Nebula spans about 100 light-years across, lies about 5000 light-years away.

Technical Details:
Telescope: Skywatcher Esprit 120 ED
Camera: ZWO ASI 1600MM
Filters: Astrodon Hydrogen-Alpha 5nm, Oxygen-III 5nm and Sulphur-II 5nm
Mount: Skywatcher AZ-EQ6
Guidescope: Orion 80mm OTA
Guider: ZWO ASI 290M
Processed using PixInsight, PS and LR
Capture Software: Astroimager and PHD2
HA = 9 x 600s
OIII = 11 x 600s
SII = 11 x 600s
(Total of 5 hours and 10 minutes)
Used the Hubble palette for processing
Location: Beit el Kiko, Lebanon
Date: Captured over 3 nights: 11, 20 and 22 January



Daniel Caracache
License: None (All rights reserved)

Sky plot

Sky plot


The Rosette Nebula, 


            Daniel Caracache