[BAA Comets] 2013US10 from Southend Essex

[Peter Carson]

Blimey, steady on Andrew!! It will be a night to remember when I have to
complain about the light pollution caused by " imager" Robertson.
Peter
On 11 Dec 2015 07:03, "Andrew Robertson" <alphacentauri at tesco.net> wrote:

> Excellent images, both yourself Nick and Peter. You've both got me
> thinking about a camera again but ONLY for transient objects such as comets.
>
> Andrew
>
> -----Original Message-----
> From: Comets-disc [mailto:comets-disc-bounces at britastro.org] On Behalf Of
> Nick James
> Sent: 10 December 2015 23:06
> To: BAA Comets discussion list <comets-disc at britastro.org>
> Subject: Re: [BAA Comets] 2013US10 from Southend Essex
>
> 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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