The sub-frames taken for the image below are put together in a movie accessible here! What you will see in the movie are two, 9-minute periods with about a 20-minute break in between them (during which 20-minute break the comet shifts position noticeably). This is time lapse: the whole movie is only 1 minute long---40 minutes crammed into 1 minute.
Pay careful attention please to the position of the comet relative to the background stars. The movement is easiest to see against those stars' positions.
The first 9-minute set of sub-frames was taken at 800 ISO and is 20 frames of 20 seconds each with 3-second intervals in between. The second is the same only taken at 1600 ISO.
Enjoy!
Astronomy and astrophotography by Val Ricks for the love of the sky and its Creator. For a better view, toggle F11 and turn off the lights.
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