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C2012 K5 (LINEAR)

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#26 daniel_h

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Posted 03 January 2013 - 07:30 AM

finally caught this one in my 25x100 - the nucleus wasn't totally clear - i used to averted vision to ascertain it pointed toward 5 o'clock in my sketch -other than that fairly un-remarkable, my sketch shows what i saw
taken 3 Oct 1200 UT, N is up on my sketch (should be rotated to the right a little)

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#27 Man in a Tub

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Posted 03 January 2013 - 08:44 AM

Great sketch, Daniel!

When I got a meager, dim view around 03:00 PST, the nucleus was inside that lower triangle of stars in your sketch. I tried a rough estimate of size seen — less than 10', perhaps about 7'. I decided it would be better to see the comet free of the triangle. So I took an hour break.

Well, a second glimpse didn't happen with my GO Signature 15x70. The comet was wiped out by moonglow and light pollution bouncing around in the particulate haze of a windless night. Even M 36 and M 38 were almost obliterated.

Dreck happens!

#28 ronharper

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Posted 03 January 2013 - 10:07 AM

Last night was super clear, but when I looked the view was confused by stars. I could see it but couldn't tell diddly.
Ron

#29 BobinKy

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Posted 03 January 2013 - 12:49 PM

:waytogo: Nice sketch, Dan! Thank you for sharing.

#30 daniel_h

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Posted 03 January 2013 - 02:45 PM

I'll try for another go tonight, Auriga is fairly low for me
It's going to be hot in my part o the world, over 100 F today

#31 hallelujah

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Posted 03 January 2013 - 03:12 PM

http://www.cloudynig...5603071/Main...

#32 Mr. Bill

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Posted 03 January 2013 - 04:06 PM

Here's another chart....

http://cometchasing....ets/2012_K5.pdf

Will try with 5 inch BinoBox...

:cool:

#33 Rich V.

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Posted 03 January 2013 - 04:29 PM

Bill, in your BinoBox it should be in the same FOV as M36 until about 10PM tonight PST. They will be 2.33° apart at that time.

Really hazy down here today; will see how it is tonight...

Rich

#34 Mr. Bill

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Posted 03 January 2013 - 05:05 PM

Bill, in your BinoBox it should be in the same FOV as M36 until about 10PM tonight PST. They will be 2.33° apart at that time.

Really hazy down here today; will see how it is tonight...

Rich


OK Rich, give it a shot.

:waytogo:

#35 ianatcn

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Posted 03 January 2013 - 06:18 PM

Managed to grab a 15 minute gap in the clouds at 2230 here. I lay on my driveway armed with Zeiss 20x60s Auriga high overhead. Lovely view of the comet and M36 in same 3 degree field of view. I then compared comet to M1. I would say they were roughly the same integrated brightness given that the comet was much larger and more diffuse than the crab. That was an unexpected pleasure.

#36 Mr. Bill

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Posted 03 January 2013 - 08:17 PM

12 degrees F out there....

:coldday:

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#37 BobinKy

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Posted 03 January 2013 - 09:05 PM

:gotpopcorn: This is a wonderful thread! Thanks everybody.

#38 Mr. Bill

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Posted 03 January 2013 - 10:51 PM

OK...saw it as a diffused halo (for about 30 seconds before everything frosted over.) 9 degrees and falling...

Big Bang coming on shortly and a Jack Daniels egg nog is in my immediate future.

:p

#39 ronharper

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Posted 04 January 2013 - 12:17 AM

Very hard to see it at all tonight, smack on top of a 6.5 magnitude star when I looked.
Ron

#40 Tamiji Homma

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Posted 04 January 2013 - 12:32 AM

Hi Ron,

I agree with you.
Tonight was harder than last night.

I spent half an hour between 20:30 and 21:00 PST with Kowa at 21x. I thought that transparency was getting worse here.
Perhaps, X Aur was too bright so that it was hard to see C/2012 K5 as you said.

Last night, I observed in cyclops mode (TMB 92SS/Nagler 31), at 16x, 4.8 degree TFOV. M36, M37 and C/2012 K5 were in the same view :)

Here is the chart (SkySafari Pro generated, 5 degree circle):
Posted Image

Tammy

#41 SMark

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Posted 04 January 2013 - 02:41 AM

I spent about a half hour observing from 1:45 to 2:15 EST from my suburban location with my 10x70 and my 16x80, and I failed to see it with the 10x70. However, using averted vision with the 16x80 I did find it already past X Aur. Very faint but an obvious elongated fan-like shape. Difficult to see with direct vision, unfortunately. I thought of going back and getting my 25x100 but the moon was already becoming a problem so I just went in. May try it tomorrow. M36, M37 & M38 showed well in both binoculars, but especially in the 16x80.

I actually used both binoculars hand-held from my reclined anti-gravity chair. The 16x80 would work better like that if I had some higher elbow rests. I may just have to make myself a set of those...

#42 daniel_h

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Posted 04 January 2013 - 07:23 AM

nabbed it again tonight -i was surprised how much the comet had moved away from M36 from my previous obs last night, i thought initially i couldn't see t but it as sitting at the top of my fov (towards my Sth)

i would have to say it is more distinctive tonight as a comet, the coma easily visible outline wise, the nucleus appeared definitively tonight whereas a last night i as using averted & giving my best guess of where it was
sketch attached, instrument 25x100
bright star at top of view is X/Chi Aurigae

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#43 Mike Lynch

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Posted 04 January 2013 - 07:57 AM

Tried LINEAR last night (Jan. 3) with my 20x80's in my suburban back yard. Saw M36 with no problem, but couldn't see the comet. Better location (away from lights) likely would have made a difference!

Mike Lynch
Frankfort KY USA

#44 ngc 9999

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Posted 04 January 2013 - 09:40 AM

Does Stellarium shows the right position?

#45 Riddick

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Posted 04 January 2013 - 11:52 AM

Does Stellarium shows the right position?


Yes, press F2 (configuration), click on Plug-ins, Solar System Editor, check the box Load at startup and then click on configure. Click on the tab Solar System and then click again on Import orbital elements in MPC format.
Select type: comet, select source: a list of objects from the internet: MPC's list of observable comets. Finally click on Get orbital elements.

Seems more complicated than it is, once inside stellarium it's very easy.

To quickly locate the comet I usually press F3 and type C/2012 K5. It goes directly to it.

Another great two Plug-ins in Stellarium to star hopping through binoculars are angle measure and ocular view. I've located many elusive objects with these.

#46 John_G

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Posted 04 January 2013 - 03:49 PM

Chart attached is for tonight. Cloudy here and likely the rest of the week but good luck.

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#47 Rich V.

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Posted 04 January 2013 - 04:18 PM

Last night was a wash out for me; the comet was very near Chi Aur (mag 4.71) but the glare it and the three other stars in that area prevented me from seeing the comet in 16x70s. Transparency was worse than the other night; even the bright OCs in the area looked washed out.

It was hard on the neck as well; I ended up tilting my tripod back on two legs to make it less painful. :p Too cold to setup more gear for an easier shot on my neck.

If this comet was more spectacular, I'd feel better about braving the elements! It's certainly no Comet Machholz; that was a proper winter comet! ;)

Rich

#48 daniel_h

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Posted 04 January 2013 - 04:58 PM

For Mike & ngc999 the comet wasn't so near M36 last night as some charts predicted, but was closer to Taurus

Rich opposite conditions for me, most of my state reached close to 105F yesterday, & it was stinking hot all night...the comet is also close o my northern horizon, no neck craning necessary, but slightly higher would be better. (the Aur clusters never get high enough for me to be at their best)

Hopefully it will still be good next Tuesday, I am going to 1700+ M for a mountain top outreach night

#49 John_G

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Posted 04 January 2013 - 06:30 PM

With my 12x50s, I didn't see the nucleus but the coma was quite noticeable. Faint and fuzzy but visible, especially with averted vision. My 4th comet since 2009.

#50 rydberg

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Posted 04 January 2013 - 11:36 PM

I was able to see it in Richmond KY, on December 3rd around 10:15 PM (UTC-5), but only with averted vision. Did not see a bright core, so probably I was seeing the tail. The sketch by Daniel seem to depict what I was seeing (if I look at his sketch by rotating my head 90 degrees left). My FOV was bigger as I saw the comet with my Canon 15x50 (I found it with these) and then I saw it again with my Fujinon 16x70. By the way, stars have much more "punch" in the 16x70. Looks like my eyes still open beyond 4.3 mm.
Marco






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