New Naked Eye Comet - 17/P Holmes
- ftodonoghue
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Replied by ftodonoghue on topic Re: New Naked Eye Comet - 17/P Holmes
The view through the dob tonight is spectacular and the pic below does not do it justice at all.
Canon Eos 300D,
90mm short tube refractor
iso 800
4seconds
26october 21.20pm
and a widefield one. This is 10 seconds iso 800
Canon Eos 300D,
90mm short tube refractor
iso 800
4seconds
26october 21.20pm
and a widefield one. This is 10 seconds iso 800
Cheers
Trevor
Trevor
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- mjs
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Replied by mjs on topic Re: New Naked Eye Comet - 17/P Holmes
Nice images there Trevor. Just to complete the set from Kerry here is an image close up showing the nucleus and the coma. Taken with a webcam through the 222mm Dob. Just 156 frames processed in Registax 4
Michael Scully
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- JohnMurphy
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Replied by JohnMurphy on topic Re: New Naked Eye Comet - 17/P Holmes
Here's the latest from tonight at 00:18UT 27/10/2007.
My estimate is a mag of slightly greater than mag 2.0. It's still getting brighter. What caused it? My guess is an impact with an asteroid.
We (IAS) have asked for Cassini and Hubble to be trained on this unique event but the response is slow.
Canon 350D 30sec @ISO100 3 image composite. Celestron 102SLT. Conditions were horrible, these shots were taken through cloud and full moonlight.
My estimate is a mag of slightly greater than mag 2.0. It's still getting brighter. What caused it? My guess is an impact with an asteroid.
We (IAS) have asked for Cassini and Hubble to be trained on this unique event but the response is slow.
Canon 350D 30sec @ISO100 3 image composite. Celestron 102SLT. Conditions were horrible, these shots were taken through cloud and full moonlight.
Clear Skies,
John Murphy
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John Murphy
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Replied by dave_lillis on topic Re: New Naked Eye Comet - 17/P Holmes
Dave L. on facebook , See my images in flickr
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Carrying around my 20" obsession is going to kill me,
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Replied by dave_lillis on topic Re: New Naked Eye Comet - 17/P Holmes
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
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Replied by DeirdreKelleghan on topic post
Comet 17/P Holmes
26 October 2007/ 1200mm/8mm/150X/ Watercolor / Pastels/ Conte
barlows did nothing for the image
I had a 30 minute window in between clouds, to catch this icy visitor in my telescope. I had to shield my scope and my eyes form the moon light by hiding behind my house.
First I looked in my 15X70 binos, and I could see a halo around the comet, a very different view to October 24th, I reckoned this had brightned to around Mag 2.
I popped my 8mmTVP into the scope and oh yes this was a sketch I had to have. So here it is,cloud and rain here in Bray at the moment so most likely not look this evening.
I am thinking up new ways of getting this comet, it is a challenge to sketch as it has so many properties to deal with. Hope it's there for a while longer.
Deirdre Kelleghan
Irish Astronomical Society
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Replied by johnflannery on topic Re: New Naked Eye Comet - 17/P Holmes
Hi Mia and everyone,
Legendary comet expert John Bortle has a message on the comet mail list speculating on the possibility of a partial collapse of a section of the comet on itself. Read more at tech.groups.yahoo.com/group/comets-ml/message/12908
On the point of the dark band seen by observers we were speculating today that the band could be the shadow(s) of the bright jet of material from the nucleus projected on the expanding shell -- similar to seeing the shadow of a jet aircraft contrail against the underside of a cloudbank. A way to confirm would be to determine if the shadows rotate at a rate that might be consistent with the bright jet, as the nucleus spins.
Another idea I was mulling over was whether more recent eruptions of material are "shocking" earlier shells of dust puffed off from the nucleus/site of outgassing. I'd lean more towards the former idea but could be way off the mark here on all theories :roll:
8-)
Clear skies!
John
Legendary comet expert John Bortle has a message on the comet mail list speculating on the possibility of a partial collapse of a section of the comet on itself. Read more at tech.groups.yahoo.com/group/comets-ml/message/12908
On the point of the dark band seen by observers we were speculating today that the band could be the shadow(s) of the bright jet of material from the nucleus projected on the expanding shell -- similar to seeing the shadow of a jet aircraft contrail against the underside of a cloudbank. A way to confirm would be to determine if the shadows rotate at a rate that might be consistent with the bright jet, as the nucleus spins.
Another idea I was mulling over was whether more recent eruptions of material are "shocking" earlier shells of dust puffed off from the nucleus/site of outgassing. I'd lean more towards the former idea but could be way off the mark here on all theories :roll:
8-)Clear skies!
John
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Replied by dave_lillis on topic Re: New Naked Eye Comet - 17/P Holmes
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
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Replied by mjs on topic Re: New Naked Eye Comet - 17/P Holmes
Well, I always thought those that left a warm bed to go observing were a little bit odd, but when I saw the Moon shining through the window at 5:45 this morning I had to go and get up. The sky was already brightening but the comet was still bright.
This is the result of some attempt at imaging.
This is the same equipment, settings and processing, as the earlier image taken on the 27th below so the difference in size from the image taken earlier is Real! I also think I can see a hint of a jet at the 7 o'clock position??
Both images were taken through my Dobsonisan so up is up and not north, if you know what I mean, so with 9 hours rotation... 135 degrees??? it is too early for those calculations.
Now is there any way I can sneak back to bed...
This is the result of some attempt at imaging.
This is the same equipment, settings and processing, as the earlier image taken on the 27th below so the difference in size from the image taken earlier is Real! I also think I can see a hint of a jet at the 7 o'clock position??
Both images were taken through my Dobsonisan so up is up and not north, if you know what I mean, so with 9 hours rotation... 135 degrees??? it is too early for those calculations.
Now is there any way I can sneak back to bed...
Michael Scully
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Replied by paulevans on topic Re: New Naked Eye Comet - 17/P Holmes
Yes, it is obviously not point like even in the twilight sky. Took this quick snap - this is real pixels cropped down showing the DSLR view through a 210mm lens at 1750 GMT this evening
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