New comet C/2017 O1 ASASSN imaged on July 28th 2017, was discovered during an abrupt increase of brightness until the magnitude 10 at present. As seen in this image has developed a green gassy coma of diatomic carbon, with an appearent size of 10 arcminutes. This comet can reach a maximum brightness around 7th magnitude on next october when be observable from northern hemisphere passing near celestial zenit. There are some galaxies in this field, at right NGC 1084 and at bottom-left NGC 1110 edgeways.
GSO 8 f/3.7 & Atik 383L+ (L:5×240s Bin1 + RGB:3x120s Bin2) from Hoya Redonda, Valencia (Spain)
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