Comet Lovjoy moving through Taurus, as seen from central France on the evening of 12 January 2015.
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This is a stack of 382 light frames (2.5s, iso 6400) at f/2.8 and 125 mm, using 40 dark frames, 33 flat frames, and 45 bias frames. The total exposure time is thus 12 min 44 s, and this was spread out over a 31 minute interval. The image was stacked on the stars in DeepSkyStacker, leading to some streaking of the comet as it moved relative to the stars.