Flintstone Stargazing

November 15, 2007

Comet 17P/Holmes on 11/15/07

Filed under: astronomy, Astrophotography, comet, Observation Journal — Tags: — Ed @ 9:28 pm

Comet 17P/Holmes on 11/15/07

The comet’s tail is really starting to stretch out now. This is a composite of 3 images in order to get the whole thing. One other thing – this is a composite of 30 second images (I used to use 2 second, then 8, then 15). This brings out more detail in the comet and also shows a lot more of the stars behind the comet. It’s getting quite easy to see the large number of stars behind the comet.



  1. dusts from the outbursts of comet holmes will reach earths atmosphere by december, so, no need for chinese fireworks. december nights will be spectacularly brighter than any other.

    Comment by marlon — November 16, 2007 @ 3:22 am

  2. I’m somewhat doubtful about that. It’s roughly 200 million miles away and the outburst started on October 23, so it’s had 24 days to grow so far and is somewhere south of 1.6 million miles in diameter, indicating a growth rate of around 33000 miles per day. at that rate, assuming the solar wind wouldn’t push the comet’s particles away (which they would) the first particles wouldn’t reach Earth’s atmosphere until about 10 years from now. Realistically, I don’t think that more than a handful of particles will ever reach Earth. Now these are rough calculations done quickly and with estimates. If there’s evidence otherwise, I’d be glad to look at it, but even if my numbers are off by a factor of 10 in both directions, I still don’t see how any particles could get here anytime soon.

    Comment by Ed — November 16, 2007 @ 7:45 am

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