Comet C/2009 P1 Garradd

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rwilkinson
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Comet C/2009 P1 Garradd

#1 Post by rwilkinson » Thu Aug 04, 2011 7:45 pm

News from the British Astronomical Association & Society for Popular Astronomy Comet Section:
2009 P1 (Garradd) is brightening rather slowly but is now observable from much of the UK. Most of the recent increase in brightness has been due to its decreasing distance from the Earth. The comet is well condensed and an easy target with large binoculars or a telescope, even from suburban locations. Enif is a good star-hopping start point, but don't get confused with the nearby M15 which is much brighter than the comet.
Heavens-Above can help you to locate it:
http://www.heavens-above.com/comet.aspx ... F2009%20P1

I hope to have some pictures (and maybe even a video) of this in time for my talk on 20-Sep...

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Re: Comet C/2009 P1 Garradd

#2 Post by cstone » Sun Aug 07, 2011 4:07 pm

Hi Ross

Do you know anywhere where we can receive email alerts for this sort of stuff. Be it ISS in vicinity of Manchester or Comets passing within viewing distance!

Regards

Carl
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I choose to image with an 11" SCT Celestron in this decade and do the other things, not because they are easy, but because they are hard......

dean_kos

Re: Comet C/2009 P1 Garradd

#3 Post by dean_kos » Sun Aug 07, 2011 11:35 pm

just spent the last hour trying to find this comet ...... no luck. so decided to image m15 instead (will post image once processed) ...... and then came the rain !!!! I think I was expecting to see something that was obvious as a comet, unless I just completley missed it with scope, which is highly probable....

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Re: Comet C/2009 P1 Garradd

#4 Post by rwilkinson » Mon Aug 08, 2011 6:46 am

It's only 7th magnitude, which means that you'd need binoculars and a dark sky to see it visually - but it should show up in a CCD image.
There's another comet (C/2010 X1 Elenin) which should be quite a bit brighter in September and October.

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Re: Comet C/2009 P1 Garradd

#5 Post by rwilkinson » Wed Aug 17, 2011 12:05 pm

If it's clear over the next few nights, the comet is close to the distinctive constellation of Delphinus:
garradd.jpg
The comet's positon on 17-Aug
garradd.jpg (57.86 KiB) Viewed 6922 times
and the Moon is on the wane, so the skyglow will be reducing.

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Re: Comet C/2009 P1 Garradd

#6 Post by rwilkinson » Wed Aug 17, 2011 3:24 pm

Here's a great picture of the comet taken from Germany last week:
http://kometen.fg-vds.de/pix/2009P1/2009P1_02082011.htm
nicely juxtaposed with a Messier object! :D

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Re: Comet C/2009 P1 Garradd

#7 Post by rwilkinson » Wed Aug 17, 2011 10:29 pm

Yes, I've just managed to see it through my 15x70 binoculars. :)
It's very faint and diffuse - I only found it by star-hopping with a close-up finder chart (the CdC program running on my netbook). And whilst waiting for my eyes to dark-adapt I saw a bright Perseid meteor too! 8-)

I'd only got home at 10:40, so didn't have time to set up any imaging equipment myself, but I got a 'phone call from Carl to say that he was imaging it with an LX webcam on his 11" scope - so look out for his pictures in the Gallery soon!
There's still a lot of Moon-glow tonight, but that should improve over the next couple of weeks.

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Re: Comet C/2009 P1 Garradd

#8 Post by rwilkinson » Mon Aug 22, 2011 2:47 pm

If it's clear on Friday night, look out for the comet passing very close to M71 in Sagitta:
gar2.png
The comet's position on 26-Aug
gar2.png (6.56 KiB) Viewed 6885 times

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Re: Comet C/2009 P1 Garradd

#9 Post by rwilkinson » Thu Aug 25, 2011 1:28 pm

Last night I spent around an hour imaging the comet: there was some wispy cloud around, but I took advantage of the periods of thicker cloud to do my dark-frames.
As well as the stacked single image which I posted in our Gallery:
http://www.boltonastro.org.uk/Gallery/d ... fullsize=1
I've also managed to convert the 48 frames into an animated GIF - but it's too large a file to upload to the Gallery, so I've put it on my own web-site:
http://homepage.ntlworld.com/rossjwilki ... _24aug.gif

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