NGC4631:
Canes Venatici
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NGC4631: Galaxie, CVn,
Distance: 28 Mal
Instrument: Meade 10"/11 STL11000M sur AP900
Temps de pose: LRGB: (5,3,3,2)*20 minutes, binning: 1*1, Tc= -20°C, FWHM
au centre: 4.3 à 5.4 pixel
Sky Brightness/arc sec**2: 20.2
Date: 22/03/09
Lieu: SMU