[BAA Comets] 2013US10 from Southend Essex

[Nick James]

I've processed my 200mm, f/2.8L frames and can convince myself that the 
ion tail extends for at least 3 deg. It is very low contrast though.

http://www.nickdjames.com/2013US10/2013us10_20151209_0547_ndj.jpg

Using the green channel of the DSLR image and UCAC-4 V references I get 
a total magnitude of 6.4 at 0547 on 2015-12-09.

Nick.


> Here's the resulting image from yesterday mornings efforts. http://www.astromania.co.uk/2013US10_20151209_0603_PCarson.jpg  The tail has got several strands and waves in it.
> It was a lovely morning yesterday, if a little misty. This is the general view of the thin crescent moon rising with Venus and Spica up to the right.  http://www.astromania.co.uk/20151209-Dawn.jpg
>
> Peter
>
> -----Original Message-----
> From: Nick James
> Sent: Wednesday, December 09, 2015 7:24 AM
> To: BAA Comets discussion list
> Subject: Re: [BAA Comets] 2013US10 from Southend Essex
>
> Peter,
>
> A really nice clear night last night with lots of comet images, a couple
> of NEOs and some other stuff. I managed to get a couple of hours of
> sleep but I too have a long day ahead at work...
>
> Since C/2013 US10 is now much higher I stayed in Chelmsford but I did
> screw up in my planning. With one exception the comet is now well above
> my local horizon so I was hoping to get some good shots using my
> widefield camera on the main mount (SXVR-H18 + WO Megrez 72, f/6).
> Unfortunately, the exception was a large tree which blocks the view to
> my SW and US10 disappeared into that at around 0535 so I don't have many
> frames to stack.
>
> In a hurry I set up my 200mm f/2.8L lens on another mount down the
> garden and do have a long run on the comet using that.
>
> I could see the comet clearly in 11x80s from my light-polluted back
> garden but just as a fuzzy ball with a starlike centre. No sign of any
> tails but that is not surprising from here.
>
> A beautiful thin crescent Moon and Venus in a brightening sky as I set
> up to take the flats rounded off a very nice night.
>
> Lots of coffee now then off to work.
>
> Nick.
>
>
>
>> The additional altitude of 2013US10 made for a much better view. I could detect the comet in my 7x50’s from the urban observing site (SQM-L 18.66 in the direction of the comet). In the 11x80’s the star like nucleus surrounded by a hazy coma was obvious. I thought I could detect extensions to the south and west but I did know what to expect so maybe my imagination was helping.
>> I imaged 2013US10 with my 100mm refractor and it appears I’ve got some useful data. However the processing will have to wait until tomorrow...I’ve got a full day to day.
>> What are others seeing?
>> Peter
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>
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