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  #1  
Old 20-08-2008, 03:19 PM
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6P/ d'Arrest OUTBURST!

There has been a bit of discussion on comets-ml about 6P's outburst, the comet has brightened rapidly to mag 7.8 at last report.
Observations are encouraged, visual and photographic.

The comet should be able to be seen in binoculars from a dark sky.

Good luck!
Cheers!
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  #2  
Old 20-08-2008, 03:22 PM
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iceman (Mike)
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Thanks Chris - where is it located? Got a finder chart?
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  #3  
Old 20-08-2008, 03:29 PM
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Hi Chris & All,

Thanks mate -- will take a look tonight though the Moon will be problematic!

Best,

Les D
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  #4  
Old 20-08-2008, 03:38 PM
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d'Arrest

Hi Mike, Chris & All,

Doh!!

The map I uploaded earlier in this post was wrong -- transposed some elements while entering them into Megastar. Specifically the figure for orbital inclination was wrong. The map supplied by Liz (below) is correct.

Sorry for the dopey mistake!

Les D

Last edited by ngcles; 20-08-2008 at 08:52 PM. Reason: Error
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  #5  
Old 20-08-2008, 04:08 PM
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Sounds great, fingers crossed. Here is another chart from skyhound.com
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  #6  
Old 21-08-2008, 11:34 AM
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Cheers for the heads-up.
CDC shows location if elements are updated.
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  #7  
Old 21-08-2008, 11:41 AM
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Thanks for the heads up Chris.

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  #8  
Old 21-08-2008, 12:33 PM
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Thanks Chris for the heads up and Liz for the chart. Will try to have a look tonight, if these clouds go away.
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  #9  
Old 21-08-2008, 01:00 PM
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Socked in hare now, and the next few days weather forecasts look bad. Will get the scope put if it clears. It is well placed for observation in Saggitarius and moving SE.
Scott
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  #10  
Old 21-08-2008, 01:02 PM
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Yep same here too, weather's gone 'pear shaped', shame I was hoping to have a squiz tonight.

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  #11  
Old 21-08-2008, 01:43 PM
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Hi Guys!
I observed 6P last night, made it out at mag 7.6, DC= 5-6 and Dia= 16'.
The observations were not affected by moonlight, i made the obs at 7:28pm EST, limiting mag 6.5, from Kirby Observatory grounds in Armidale, i used my 10" f/5 dob and 40mm Plossl.
I didn't see a tail visually, other reports have the coma at 7' dia, i observed quite a large coma and strong central condensation, it filled 1/6th FOV of the 40mm (x31) eyepiece.

I also saw C/2008 A1 McNaught, which is quite bright and strongly condensed as well, i made it out at mag 6.4, and dia= 6.8', slight coma extension to the SE. I could almost make out a tail but the comet being 12 degrees above the SW horizon i wouldn't like to think it was anything worth noting until i get a better look at it!


Cheers!
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  #12  
Old 21-08-2008, 01:44 PM
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mmm I woke up today and it was pair shaped... I dont think I've got anything waiting for me at the post office?
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  #13  
Old 21-08-2008, 01:59 PM
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I took 6x 5 min frames of it last night from home. It is certainly much brighter than my last look. Hopefully I will get to process them tonight.
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  #14  
Old 21-08-2008, 10:33 PM
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Pic from last night. Lots of moon by the time I got to take these and it is cloudy tonight. For what it is worth it is a stack of 5 x 5 min exposures through my VC200L with a 40D at 1800mm. Processed and stacked with Iris
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  #15  
Old 22-08-2008, 03:50 PM
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Wow, top pick Terry. I had a look at this comet last night, didn't do any magnitude estimates, but could see the coma and brightenning towards the centre. The coma showed a slight elongation to the SE as previously mentioned. No tail was visible. I used the 12" Dobs and a 17mm LVW (88x) for the best view. Tried a UHC filter at a whim, but no extra detail was achieved.
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  #16  
Old 22-08-2008, 06:25 PM
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Nice Pic Terry.
You've also captured signs of intelligent life, seems every
star has mounted a synchronised attempt to send us a message in Morse Code..... I wonder what '5' means...
If there were 6 dot's they'd be saying 'HI'
Yes I'm going crazy....
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  #17  
Old 22-08-2008, 09:03 PM
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Quote:
Originally Posted by AlexN View Post
mmm I woke up today and it was pair shaped... I dont think I've got anything waiting for me at the post office?
I'm waiting for a cable to be delivered, so it's probably me.

Thanks for the heads up Chris.
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  #18  
Old 22-08-2008, 09:06 PM
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Quote:
Originally Posted by MrB View Post
Nice Pic Terry.
You've also captured signs of intelligent life, seems every
star has mounted a synchronised attempt to send us a message in Morse Code..... I wonder what '5' means...
If there were 6 dot's they'd be saying 'HI'
Yes I'm going crazy....

6 dots would mean that I had more patience and would have kept taking more frames and not been as p'd off with the moon.
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  #19  
Old 23-08-2008, 11:31 AM
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Not in Terry's class, but here's my shot from last night, hand-guided with slo-mo knobs on EQ1.

Visually, it was pretty faint in my scope - averted vision helped. However, C/2008 A1 McNaught was quite bright, like a smallish, bright, centrally-condensed globular cluster. Well worth a look, but get it early before it sets!

Cheers -
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  #20  
Old 23-08-2008, 11:47 AM
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Great images Terry and Rob, well done to you both.

I might try to image this comet myself tonight, weather permitting of course.

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