The Rosette Nebula

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The Rosette Nebula (also known as Caldwell 49) is a large, circular 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 (Caldwell 50) is closely associated with the nebulosity, the starsof the cluster having been formed from the nebula’s matter.

Telescope / lens shooting: Takahashi FSQ106ED
Camera to capture: QSI 683 wsg-8
Guides telescope / lens: Takahashi FSQ106ED
Camera guide: Starlight Xpress Loadstar
Focal reducers: Takahashi Extender-Q 1.6x
Program: Diffraction Limited MaximDL 5 Pro, CCDWare CCDStack 2+, Photoshop CS5
Filters: Astrodon Tru-Balance E-Series G, Astrodon Tru-Balance E-Series R, AstroDon Tru-Balance E-Series Blue, AstroDon Tru-Balance E-Series Luminance
Resolution: 3217×2425
Dates: October 24, 2014
AstroDon Tru-Balance E-Series Blue: 4×300 “-20C bin 1×1
Astrodon Tru-Balance E-Series G: 4×300 “-20C bin 1×1
AstroDon Tru-Balance E-Series Luminance: 15×300 “-20C bin 1×1
Astrodon Tru-Balance E-Series R: 4×300 “-20C bin 1×1
Accumulation: 2.2 hours
Dark frame: ~ 50
Flat-field frames: ~ 12
Frames offset: ~ 300
Avg. Age of the Moon: 0.08 days
Avg. Phase of the Moon: 0.01%
The average FWHM: 2.25
Temperature: 5.00
RA Centre: 97.967 degrees
DEC Center: 4,947 degrees
Pixel scale: 1,310 coal. sec / pixel
Direction: 90.151 degrees
Radius field: 0.733 degrees
Locations: New Mexico skies, Rodeo, New Mexico, United States

Author: Benoit Gagnon

Astrofoto of the day from SPONLI, 09.12.2014