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This large picture is the sum of eight 120s and one 180s exposure using a narrow band filter centered at 618 nm. It was taken from 5:27 to 5:43 UT and from 6:20 to 6:34 UT. The field size is 8.9×10.4 degrees. A nearly 10 degrees gas tail is recorded. Because of the solar wind, this tail follows an irregular line. The proper motion of the comet and the two so separate time intervals used to sum the pictures, make stars double. |
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This picture is the sum of six 5s exposures without filters. It was taken at 4:53 UT the same day. The field size of this small picture is 96×92 arcminutes. |