Contains: NGC 2244, Rosette nebula, NGC 2239, The star 12Mon
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NGC2244 (Rosette Nebula) LHaRGB - Jan/Feb 2018

Technical card

Resolution: 2953x2224

Dates: Jan. 29, 2018Feb. 7, 2018Feb. 11, 2018

Astronomik B 1.25" Type IIc: 6x600" bin 1x1
Astronomik G 1.25" Type IIc: 6x600" -10C bin 1x1
Astronomik Ha 1.25" 6nm: 23x600" -10C bin 1x1
Astronomik L 1.25" Type IIc: 13x600" -10C bin 1x1
Astronomik R 1.25" Type IIc: 6x600" -10C bin 1x1

Integration: 9.0 hours

Darks: ~20

Flats: ~20

Flat darks: ~20

Avg. Moon age: 19.98 days

Avg. Moon phase: 54.07%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.62 job: 1927242

RA center: 97.951 degrees

DEC center: 4.988 degrees

Pixel scale: 1.995 arcsec/pixel

Orientation: 264.536 degrees

Field radius: 1.025 degrees


This is an L-Ha-RGB image where I'm still learning how best to combine the channels - really I was making this up as I went along until I got something that I liked....



Geof Lewis

Sky plot

Sky plot


NGC2244 (Rosette Nebula) LHaRGB - Jan/Feb 2018, 


        Geof Lewis