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  #21  
Old 10-01-2015, 06:37 PM
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Originally Posted by gaa_ian View Post
Awesome image Greg. It really gives the impression of the Comet receding from as at Phenomenal speed.
Thanks Ian.

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Originally Posted by RickS View Post
Great catch, Greg. The detail in the tail is spectacular.

Cheers,
Rick.
Cheers Rick.

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Originally Posted by multiweb View Post
Did you guide on the stars or on the comet? It moves really fast, even on 30s exposures. I would expect the tail to blur quite a bit on 180s.
On the stars.

Greg.
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  #22  
Old 10-01-2015, 06:47 PM
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Great photo Greg; excellent detail.
I am fascinated by the movements within the tail of comets given what I presume is an environment free of turbulence.
Or does the 'rock' create a turbulance in the immediate environment in the solar wind? Or is it an electrical phenomena?
Must head over to the Comet Watch FB page and ask.
Anyhoo, another cracker of an image mate.
Trev
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  #23  
Old 10-01-2015, 07:04 PM
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fantastic..
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  #24  
Old 10-01-2015, 07:46 PM
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Originally Posted by Regulus View Post
Great photo Greg; excellent detail.
I am fascinated by the movements within the tail of comets given what I presume is an environment free of turbulence.
Or does the 'rock' create a turbulance in the immediate environment in the solar wind? Or is it an electrical phenomena?
Must head over to the Comet Watch FB page and ask.
Anyhoo, another cracker of an image mate.
Trev
Thanks Trev. I suppose there could be a few factors that create that uneven tail. Perhaps the comet is rotating. I imagine its a very uneven surface as well. Perhaps the surface varies in composition. All of these factors would make it uneven.


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fantastic..
Thanks John.

Greg.
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  #25  
Old 10-01-2015, 08:03 PM
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Originally Posted by gregbradley View Post

On the stars.
Cool - I was a little worried about subs duration but will definitely give it a crack next week under dark skies with a cooled CCD.
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  #26  
Old 11-01-2015, 08:01 AM
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Cool - I was a little worried about subs duration but will definitely give it a crack next week under dark skies with a cooled CCD.
I tried a few sub lengths. 2 minutes would be minimum to get enough signal, 3 minutes starts to show the core slightly elongated which becomes noticeable at 5 minutes.

Greg.
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  #27  
Old 11-01-2015, 12:34 PM
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Nice one, Greg .. Not sure if you know, but this was the start of a major disconnection event - https://www.youtube.com/watch?v=PX3nf53sNu0
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  #28  
Old 11-01-2015, 02:56 PM
Star Catcher (Ted Dobosz)
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Very nice image indeed Greg!
Ted
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  #29  
Old 12-01-2015, 12:12 AM
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Nice one, Greg .. Not sure if you know, but this was the start of a major disconnection event - https://www.youtube.com/watch?v=PX3nf53sNu0
Amazing. I suppose every now and then a big chunk breaks off.

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Very nice image indeed Greg!
Ted
Thanks Ted. If the weather clears this week I'll attempt some more images of it.

Greg.
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  #30  
Old 12-01-2015, 04:10 PM
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Originally Posted by gregbradley View Post
I tried a few sub lengths. 2 minutes would be minimum to get enough signal, 3 minutes starts to show the core slightly elongated which becomes noticeable at 5 minutes.

Greg.
Thanks for the info. I'll try that. Planning on OSC at prime on FSQ and Mono with 200mm piggy back.
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  #31  
Old 12-01-2015, 06:33 PM
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That's one great image Greg!

Something about comets in BW that makes them look even better sometimes than in colour.

Perhaps is makes us all reminisce about images from BW photography days and comets.
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  #32  
Old 12-01-2015, 10:01 PM
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I asked about Disconnects on the Comet Watch FB forum and this was one of the referrals. It's NASA Space Science and shows a CME removing the tail of Comet Enke on April 20, 2007 from the STEREO-A probe. There are 7MB AVI and a 1MB animated GIF links under the static picture.

http://science.nasa.gov/science-news...7/01oct_encke/
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  #33  
Old 12-01-2015, 10:55 PM
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Originally Posted by John K View Post
That's one great image Greg!

Something about comets in BW that makes them look even better sometimes than in colour.

Perhaps is makes us all reminisce about images from BW photography days and comets.
Thanks John.

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Originally Posted by multiweb View Post
Thanks for the info. I'll try that. Planning on OSC at prime on FSQ and Mono with 200mm piggy back.
That sounds like a badass combo!

Quote:
Originally Posted by Regulus View Post
I asked about Disconnects on the Comet Watch FB forum and this was one of the referrals. It's NASA Space Science and shows a CME removing the tail of Comet Enke on April 20, 2007 from the STEREO-A probe. There are 7MB AVI and a 1MB animated GIF links under the static picture.

http://science.nasa.gov/science-news...7/01oct_encke/
Thanks for that link.

Greg.
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  #34  
Old 13-01-2015, 08:48 AM
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Cool detail Greg and a nice field of view.
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  #35  
Old 13-01-2015, 04:08 PM
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Cool detail Greg and a nice field of view.

Thanks Paul. I'd like to have another go when the weather finally clears again.

Greg.
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  #36  
Old 14-01-2015, 09:01 AM
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A great looking photo Greg.

One of the best I have seen of this comet.

Ross.
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  #37  
Old 17-01-2015, 06:08 PM
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A great looking photo Greg.

One of the best I have seen of this comet.

Ross.
Thanks Ross.

I took an 8 image mosaic last night plus a 2 panel longer exposure mosaic.

I'll be taking more tonight. Probably with a lens as the tail is now too long for scopes.

Greg.
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