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Forum » SpaceEngine » Science and Astronomy Discussions » Comets thread (Anything and everything to do with comets)
Comets thread
midtskogenDate: Monday, 15.04.2013, 12:42 | Message # 136
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The path of the Mars flyby of C/2013 A1 gets narrowed down putting it slightly closer to Mars, but the impact probability continues its drop from the first estimates.




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PlanetExplorer12Date: Monday, 15.04.2013, 19:42 | Message # 137
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I sadly have never seen a comet, but i've seen a meteor shower before.




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midtskogenDate: Thursday, 18.04.2013, 14:30 | Message # 138
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Quote (PlanetExplorer12)
I sadly have never seen a comet, but i've seen a meteor shower before.

Which was the last naked eye comet, it wasn't very long ago? McNaught? That was in 2007. This is an f/8 ISO200 2 sec exposure using 500mm:



Edit: There was another comet in 2007, Holmes. Less spectacular, I think. Here's a dual exposure (moon for size comparison - in reality they were far apart):


Same focal length used for both exposures (1500 mm). f/11 and 2.5" for the comet and 1/200" for the Moon.





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Edited by midtskogen - Thursday, 18.04.2013, 14:36
 
HarbingerDawnDate: Thursday, 18.04.2013, 15:54 | Message # 139
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Quote (midtskogen)
McNaught

I never saw it sad

Quote (midtskogen)
Holmes

That one I saw. Looked pretty cool through binocs or a small scope.





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midtskogenDate: Thursday, 18.04.2013, 16:52 | Message # 140
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Hale-Bopp in the mid 90's was epic. Possibly once in a lifetime (but lets give Ison a chance). I don't think I photographed it, though. My scans before 1998 are incomplete.

Shoemaker-Levy was a big event as well. And a big internet event.





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HarbingerDawnDate: Thursday, 18.04.2013, 17:32 | Message # 141
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a big internet event.

I wasn't aware of the existence of the internet until 1995 biggrin





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midtskogenDate: Thursday, 18.04.2013, 17:59 | Message # 142
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I wasn't aware of the existence of the internet until 1995

You belong to the September generation, then. biggrin

I began at the university in 1992. The internet was ftp, telnet, gopher, archie, MUD, etc, but in 1993 the Mosaic web browser appeared and so did a lot of web sites and soon a few search engines (well, in the beginning there were just index sites, mostly manually updated), which transformed everything. Events like Shoemaker-Levy certainly raised awareness.





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Edited by midtskogen - Thursday, 18.04.2013, 18:22
 
HarbingerDawnDate: Thursday, 18.04.2013, 20:16 | Message # 143
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You belong to the September generation, then.

Well in Sept 1993 I was 3 years old, so obviously not old enough to be online (or even know what teh interwebs wur).





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DisasterpieceDate: Thursday, 18.04.2013, 23:26 | Message # 144
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Sept 1993 I was 3 years old

I now have a picture of a little 3 year old body with your head as his head playing SE.





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DoctorOfSpaceDate: Thursday, 18.04.2013, 23:35 | Message # 145
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I now have a picture of a little 3 year old body with your head as his head playing SE.


Terrifying





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HarbingerDawnDate: Tuesday, 23.04.2013, 21:28 | Message # 146
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Hubble has snapped a photo of ISON







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Edited by HarbingerDawn - Tuesday, 23.04.2013, 21:42
 
midtskogenDate: Wednesday, 01.05.2013, 14:27 | Message # 147
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ISON seems to fizzle out somewhat: http://www.aerith.net/comet/catalog/2012S1/2012S1.html




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WatsisnameDate: Thursday, 02.05.2013, 03:11 | Message # 148
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Yeah, it seems like it hasn't dropped a magnitude for the last 3 months. sad I've been hoping some comet experts would say something about what they expect from this, but it's probable that it's still just too early to tell.




 
midtskogenDate: Thursday, 02.05.2013, 07:39 | Message # 149
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They're probably only going to say that comets are unpredictable.




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HarbingerDawnDate: Saturday, 04.05.2013, 00:00 | Message # 150
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Cool new image of Hartley 2

NASA / JPL / UMD / processed by Emily Lakdawalla





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