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Dimensions2320 x 1547
Original file size1.34 MB
Image typeJPEG
M81 - "Hydrogen Enhanced" Collaboration

M81 - "Hydrogen Enhanced" Collaboration

RGB Data:
Canon 350D Hap Griffin Baader Mod
70x180sec at iso 1600
30 Darks/Flats/Bias
Celestron 9.25 reduced 0.63

February 22, 2009

Hydrogen Alpha Data:
Meade DSI Pro 2 Mono
12x480sec
Darks/Flats Applied
Meade SN8 Reflector
Baader 1.25" 7nm H alpha filter
February 20, 2009

Astronomy Magazine Picture of the Day July 7, 2009

Collaboration with Ted Rafferty, using his Ha data and my RGB data to better show the HII regions of M81. The Ha data adds quite a bit, but it's somewhat subtle in appearance as M81 is quite "nodular" anyway.