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This picture is the sum of four 120s exposures using a narrow band filter centered at 618 nanometers. It's 11.2×11.4 degrees and it was taken from 20:33 UT. Note how the dust tail is curved. |
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Inner coma without filters. This picture is the sum of five 1s exposures, taken from 21:24 UT. The field size is 44×34 arcminutes. |
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This picture is the sum of six 120s exposures using a narrow band filter centered at 625 nanometers. Field size is 3.67×7.96 degrees and it was taken at 20:50, 21:35 and 21:47 UT. The stars are curious trails because during the exposures the tracking wasn't too good. Anyway, this picture is worthy because three ion filaments are visible. |
This picture is the sum of four 120s exposures using a narrow band filter centered at 555 nanometers. Field size is 8.3×9.1 degrees and it was taken from 20:16 UT. The ion tail isn't visible because the 555nm filter is used to observe the molecules. | [jpg,43k] |
This picture is the second one but showing a field of view of 4.73×7.94 degrees. Now the ion tail isn't obvious as many naked-eye and astrophotographers have reported. |