Flintstone Stargazing

October 29, 2007

Comet Holmes continues to expand

Filed under: astronomy, Astrophotography, Comets, Observation Journal — Tags: — Ed @ 9:16 pm

Comet 17P/Holmes time lapse from 10/26/07 and 10/29/07

Comet 17P/Holmes continues to move through the constellation Perseus in this time lapse image. My first image was taken on Friday the 26th then the next two were last night and tonight (Unfortunately, I missed on Saturday). Each of the images that make up this composite is made up of 100 2second images that have been stacked.

You can see that the ejected material continues to fan out around the comet. Also, I think I may have solved part of the mystery surrounding the two bright areas in last night’s view. I believe that the other bright area is a star shining from behind the comet – there is a star in the image I took tonight that overlays that other bright spot perfectly. But the other single bright area is continuing to stand out quite clearly. Below is a very long exposure of the comet that I took tonight. It was made from 100 stacked 11.3 second images for a total time of over 18 minutes.

Comet 17P/Holmes (1130s) on 10/29/07
Comet 17P/Holmes (1130s) on 10/29/07
(note the star to the upper right of the comet – that may be the extra light area I saw yesterday.)

This is a 300 second image (20 x 15s exposures) using my 3X Barlow lens which shows a bit more of the detail of the comet.

Comet 17P/Holmes Detail (300s) on 10/28/07
Comet 17P/Holmes 3X Barlow Detail (300s) on 10/28/07



  1. Very nice pictures, Ed. I would really like to know what brought about the explosion.

    Comment by pollyann — October 30, 2007 @ 7:39 pm

  2. The photo you linked is spectacular.

    What brought about the dramatic changes in the comet is the big question right now. I haven’t seen anything definitive yet. I’m suggesting aliens.

    Comment by Ed — October 30, 2007 @ 10:29 pm

  3. It very well could be.

    Comment by pollyann — October 31, 2007 @ 9:55 am

  4. Your Messier photos are astounding – I’d love to know how you do it!
    Regarding 17PHolmes? Maybe NASA is practising again – they’ve soft landed on one asteroid and clobbered Swift-Tittle with a copper ball! ???????????

    Comment by Paul — November 1, 2007 @ 8:42 pm

  5. Thanks – if you have the time, I try to outline exactly what I do on the blog so you’re welcome to search the archives. Really, I do some reading, take advice from whoever will provide it, try a lot of trial and error and try to remember what works best and continue doing that. I’m still very much in the learning stages and hope to continue in the hobby for a long time.

    Comment by Ed — November 1, 2007 @ 9:52 pm

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