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Comet C/2012 K5 is ready for chasing

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#126 Special Ed

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Posted 13 January 2013 - 12:18 AM

Hi Everyone,

I've been off the boards for a month and when I looked at this thread there were 104 unread posts! Some great sketches, images, and observations which I just got caught up on. :bow:

My last observation of C/2012 K5 was November 22nd when it was in Bootes with almost daily solid cloud cover since then so when it cleared off the evening of the 7th (8th UT), I was anxious to get another look at the comet. By now it was in Taurus very near Aldebaran.

I was surprised how bright it was. My GoTo is a little off and put the comet core just outside the field of view but I could see the glow of the coma on the edge of the FOV.

The tail wasn't uniformly diffuse--it appeared to have streamers in it.

As others have noted, this is a fast mover--probably the fastest I have ever observed. I placed the comet just below the center of the FOV so I could include the tail in my sketch and in a half hour it had moved completely out of view.

@ Mike Phillips--you must have imaged the comet shortly after I sketched it. The starfield behind the comet trailing behind the tail to the left is the starfield in my sketch. :cool:

I'll tell you what people--it's getting crowded up there in space. A meteor went through my FOV during this observation followed shortly thereafter by a satellite.

Best to all,

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#127 Tonk

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Posted 13 January 2013 - 04:53 AM

Continuing clouds in north central UK are still preventing me observing since 01/02 Jan 2013. I'm probably going to loose it now in the Leeds city (intense) glow to my south. So next up - 30 month PhD report :( and then ..... PANSTARRS :) ...

#128 canukLX90

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Posted 15 January 2013 - 04:00 AM

Sorry to hear that you are not getting any clear nights.
Not too many here either as it has been a warm cloudy and
wet winter in the PNW.

Here is a calibrated image stack of the comet taken
on 02 January. Unfortunately I forgot to take some
guided star field subs so the stars are trailing in this
stack. But it was nice to see that SH 2-235, a faint
nebula, was just in the frame which makes for a nice
contrast subject for the comet.

PJ

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#129 John Wunderlin

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Posted 15 January 2013 - 04:02 AM

Another clear night with almost no moon tonight.

Here is a bit over 2 hours same procedure as earlier- 30 frames per second/30 second exposures. I had to stretch quite a bit more. Magnitude has dropped significantly.

https://www.youtube....h?v=1WH6M2Q5b-k

Here is my stacked data.

Also captured some ISON tonight, but I'm ready for bed.

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#130 Rich (RLTYS)

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Posted 15 January 2013 - 06:17 AM

Beautiful images. Thanks for the views.

Rich (RLTYS)

#131 MessiToM

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Posted 15 January 2013 - 05:56 PM

neat vid John Wunderlin

#132 Special Ed

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Posted 15 January 2013 - 09:28 PM

PJ, nice catch on the comet.

John, very cool video--the comet is really zipping along.

Tony, good luck winding up your PhD--we'll keep an eye on things for you while you are otherwise occupied. ;)

#133 azure1961p

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Posted 15 January 2013 - 10:03 PM

What cam was used?

Pete

#134 John Wunderlin

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Posted 15 January 2013 - 11:47 PM

What cam was used?



ST8300M. Scope is 10" LX50 @ F/6.3 riding on Losmandy G11.

#135 canukLX90

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Posted 17 January 2013 - 02:48 AM

Thanks for the appreciation Special Ed. I must say your
sketch is a very good observational capture of the comet.
Thanks for posting your effort for us to appreciate.

On 02 January SkyTools reported a comet motion of 12.9 arc
seconds per minute and on 10 Jan a motion of 6.34 arc
seconds per minute. It was really moving along!

Attached is probably my last image of the comet due to it
moving rapidly lower in altitude and the continual cloudy
night skies. It is 22 X 3 minutes guided on the comet taken
on the 10th of January.

Cheers

PJ

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#136 Rich (RLTYS)

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Posted 17 January 2013 - 06:12 AM

Impressive image. K5's tail has a definite curve to it, thanks for the view.

Rich (RLTYS)

#137 John Wunderlin

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Posted 17 January 2013 - 10:15 AM

Nice cap, PJ!

#138 canukLX90

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Posted 19 January 2013 - 01:32 PM

John / RLYTS thanks for the thumbs up on my latest image.

As this one heads out I guess it is on to the next one -
PANNSTARS then ISON. Hopefully their expected brightness
will give us more of a visual sky show !

Cheers

PJ

#139 Tonk

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Posted 19 January 2013 - 03:19 PM

Hopefully their expected brightness will give us more of a visual sky show


Go to the PANSTARRS thread for latest brightness predictions and links to graphs - no longer a great comet candidate

#140 Special Ed

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Posted 19 January 2013 - 06:03 PM

PJ,

Thanks for the compliment on my sketch. The latest images by you and John W are quite nice--that curving dust tail is something to see!

With Luna making her presence known and K5 fading, I guess I'm done with this comet--only two observations. :p

#141 Tonk

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Posted 20 January 2013 - 05:29 AM

With Luna making her presence known and K5 fading, I guess I'm done with this comet--only two observations.


Short, very fast and sweet. I got in one observation since 1st Jan. Weather was the problem. But then again I did get some obs in back in October and November!

#142 Tonk

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Posted 16 February 2013 - 06:12 PM

Never too late I guess - but here is the image I got 1st Jan 2013. Click the image below to see details and click image again for a full screen version

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#143 Special Ed

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Posted 16 February 2013 - 08:58 PM

Hey,

Great shot, Tony. The fan tail is what most of us saw. It just blew through so fast that we didn't really get much of a chance to really look at it.

#144 Dave M

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Posted 17 February 2013 - 04:39 AM

Ide agree, thats a Great shot Tony. I wish i had attempted to image this one.

#145 Rich (RLTYS)

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Posted 17 February 2013 - 06:17 PM

Tonk, a most impressive image. Thanks for the view.

Rich (RLTYS)

#146 nytecam

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Posted 20 February 2013 - 06:32 PM

Nice one Tony for Jan 1 :bow: My final brief shot last night Feb 19 very low in Eridinus under moonlight :grin:

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