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Messages 20612 - 20641 of 21277   Oldest  |  < Older  |  Newer >  |  Newest
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20612
Here is a picture of Comet Holmes showing a very faint ion tail. Taken at 01:11 UT on 31 Oct 2007. http://www.astropix.com/HTML/SHOW_DIG/064.HTM Has anyone...
Jerry Lodriguss
lodrigj
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Nov 1, 2007
8:46 am
20613
Jerry, Very nice image. The tail structure is similar to what I observed last Sunday night/Monday morning using a TMB 175mm f/8. Clear Skies, Eric...
ericj@...
ej1847
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Nov 1, 2007
11:04 am
20614
Great capture of the ion tail, Jerry! I suspect it visually as a brighter patch of the outer halo. After a couple days off from observing the comet, I was...
Jeremy Perez
jperez1690
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Nov 1, 2007
11:33 am
20615
Here is another image of the tail of Comet Holmes taken last night (10/31/2007) with my AP160 at f/5.9 from New Mexico Skies. This image is a single 20 minute...
Ray Gralak
raygralak
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Nov 1, 2007
1:58 pm
20616
The pictures of Comet Holmes are starting to look more interesting, and more like a comet. I suspected seeing that tail Tuesday night with my 25" but oddly I...
kentblackwell
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Nov 1, 2007
2:35 pm
20617
... In short yes. If you look at your image it shows the tail faning to well above west. I did this sketch on the evening of Oct 30 when observing with an f/5...
billweir110
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Nov 1, 2007
3:06 pm
20618
Very nice image Jerry. In an image I took at almost the same time, false color gradient mapping shows the offset central brightness of the comet runs along the...
W. H. Dickinson
whd001
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Nov 1, 2007
3:07 pm
20619
... I agree about the misleading, but as it is, the core is actually slightly offset as far as I can tell. In Photoshop, when I make a circular selection from...
Mikkel Steine
mikkelsteine
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Nov 1, 2007
6:01 pm
20620
This image shows what I mean: http://mikkel.messier45.com/gallery/test2/CombineFilesWgtMed.jpg The circle is exactly centered on the core. -- Best regards, /...
Mikkel Steine
mikkelsteine
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Nov 1, 2007
6:09 pm
20621
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 I looked at it with my 13-inch with no moon and in the hole between scattered high, thin clouds last...
Wayne (aka Mr. Galaxy)
mr_gxy
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Nov 1, 2007
7:21 pm
20622
Hi Kent, At about the 7pm orientation in my image there appears to be a possible anti-tail. I don't know enough about comets to be sure about that but there is...
Ray Gralak
raygralak
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Nov 1, 2007
7:22 pm
20623
That sounds about right, but I'm not sure if it was the tail or an anti-tail. My notes that night say that very same thing! Kent Blackwell ... possible ... but...
kentblackwell
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Nov 1, 2007
7:41 pm
20624
After a nice walk home from work, I was good and dark adapted, so I got the 100mm f/6 refractor back out again. The comet was still quite an easy naked-eye...
David Knisely
KA0CZC@...
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Nov 2, 2007
6:10 am
20625
Using the picture on the link below I'm trying to estimate the diameter of the nucleus and can't get this to scale correctly, without making the comet...
gnowellsct
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Nov 2, 2007
2:53 pm
20626
Put the prefix "pseudo" in front of nucleus, then you've got it. We are not seeing the actual nucleus. We never do with our backyard scopes. After suffering...
billweir110
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Nov 2, 2007
4:28 pm
20627
Hi! I'm sorry this is not a visual report. I hope I'm forgiven. I was just so positively surprised by the details in the coma that I managed to extract from...
Mikkel Steine
mikkelsteine
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Nov 3, 2007
10:33 am
20628
Mikkel, Your unmodified image captured clearly what I saw last night, Nov. 2, in an 80mm refractor, an 11-inch cat and a 15-inch Newt from Visalia, Calif. The...
Dave Adalian
lord_chiggy
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Nov 3, 2007
8:57 pm
20629
I got a chance to view Holmes last night (before we were clouded out by the hurricane moving up the East Coast) in an NP101 and again found, as with the Star...
gnowellsct
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Nov 3, 2007
9:03 pm
20630
Hi Greg, At Okt. 28, I could see the nucleus with my 4" Newton (110x) as a very faint stellar point, much fainter than the 9,2 mag HD 23676 near the nucleus. ...
Uwe Glahn
uwe_glahn
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Nov 3, 2007
9:34 pm
20631
Aren't true cometary nuclei only visible from spacecraft? John Cheng Pittsburgh PA...
john_a_cheng
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Nov 3, 2007
11:54 pm
20632
May I suggest some clafication in the nomenclare used to describe features in regard to P/Holmes. As time passes, I see the descriptions of the structures...
cnj999
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Nov 4, 2007
2:28 am
20633
The pseudonucleus has also sometimes been referred to as the "nuclear condensation". I recall being introduced to that term prior to participating in the...
David Knisely
KA0CZC@...
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Nov 4, 2007
4:47 am
20634
The pseudo-nucleus has faded during the last couple of nights. I was able to see the pseudo-nucleus from within the city of Vasteras (population 130 000) with...
timokarhula
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Nov 4, 2007
9:26 am
20635
Today the comets nucleus (pseudocore) was not visible at all in the binocolars, while it was easly visible only two days ago. Through larger telescopes the...
Mikkel Steine
mikkelsteine
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Nov 4, 2007
6:49 pm
20636
Howdy all; After observing Holmes last night we got to wondering just how large the coma of this comet is, considering it is beyond the orbit of Mars. Does ...
Steve Coe
stevecoeaz2001
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Nov 4, 2007
8:45 pm
20637
Hmmmmm...one source I saw indicated that it is now 70% the size of the sun. Neal ... From: Steve Coe To: amastro@yahoogroups.com Sent: Sunday, November 04,...
Neal Galt
nealgalt
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Nov 4, 2007
9:12 pm
20638
Hi Steve, here's my rough estimate. According to the ESA website ( http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=41491 ), the comet is 1.62 AU...
Jeremy Perez
jperez1690
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Nov 4, 2007
10:03 pm
20639
Hi! I just came in from having a quick look at the comet, and it's still beautiful :) Like earlier, it is now very difficult to see the pseudonucleus, in fact...
Mikkel Steine
mikkelsteine
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Nov 4, 2007
11:34 pm
20640
A friend and I were out last night using the FS128 under fairly adverse conditions (winds up to 30 mph, maybe more) so he didn't set up his 15" dob, but the...
gnowellsct
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Nov 4, 2007
11:39 pm
20641
Hi Steve ! Here are my calculations. The comet was at 1,6207 AU from Earth last night (1 AU = 149,598,000 km) and the diameter of the Coma was about 12 min...
Michel Nicole
mnicole01ca
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Nov 4, 2007
11:39 pm
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