[vsnet-alert 14368] Re: Magnitude 9 nova in Centarus?

[Mike Simonsen]

Hi Josch,

 "as there seem to be no sequence of the AAVSO available"

There has been an AAVSO sequence available since last night, shortly
after Arne confirmed the possible nova.

Go to the AAVSO Chart Plotter http://www.aavso.org/vsp, and enter PNV
J13410800-5815470 as the name for the star.

Choose an F or E scale and the chart orientation you prefer. You will
see a few nearby comp stars labeled, which means they have magnitude
and color information available.

On the result page there is a link "Photometry Table for this Chart"
that will take you to the sequence information.

Or you can skip the chart altogether and just get the sequence
information by selecting Photometry table under DO YOU WANT A CHART OR
A LIST OF FIELD PHOTOMETRY? The table will give you all the comp stars
that would fall on a chart the scale you have asked for.

Regards,
Mike




On Sat, Mar 24, 2012 at 1:38 PM, Josch Hambsch <hambsch at telenet.be> wrote:
> Hi,
>
> as there seem to be no sequence of the AAVSO available, I tried to use the
> photometry tool of MAXIM. Attached is the image based on a time series of
> the field over about 4h30.
> (UT  2h30-7h) on March, 24. I used TYC 8675 0599 as comp star Its mag is
> 9.528 (based on GUIDE8).
> So the magnitude in V band of the nova is around 9.37 mag at the beginning
> dropping about 0.08 mag towards the end of the run.
>
>
>
> Regards,
> Groeten,
> Grüße,
>
> Josch
>
> www.astronomie.be/hambsch
> -----Original Message----- From: walcom77
> Sent: Saturday, March 24, 2012 5:11 PM
> To: pasc1312-aavso at yahoo.de
> Cc: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp ; Roger Sinnott ; Alan
> MacRobert ; Taichi Kato ; baavss-alert at yahoogroups.com ;
> cvnet-outburst at yahoogroups.com ; Kelly Beatty
> Subject: [vsnet-alert 14362] Re: Magnitude 9 nova in Centarus?
>
>
> Hi All
>
> We just updated our blog with info and our confirmation image of the
> possible new nova in Cen.
>
> http://bit.ly/H1lYJo
>
> An animation showing a comparison between our confirmation image and
> the archive POSS2/UKSTU plate (R Filter - 1994):
>
> http://bit.ly/GNmPAT
>
> Kind Regards,
>
> Ernesto Guido, Alison Tripp, Nick Howes and Giovanni Sostero
> http://remanzacco.blogspot.com
> http://twitter.com/comets77



-- 
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Mike Simonsen
Membership Director/Development Officer
American Association of Variable Star Observers
http://www.aavso.org/

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