[vsnet-alert 14372] Re: [AAVSO-DIS] Re: Magnitude 9 nova in Centarus?

[Mike Linnolt]

Ok, thanks for getting the name into VSX so quickly! I entered my obs
from last night. It was about 9.6 visually using Tycho2+Bessell comp
stars. Kind of low and clouds, so not the best of estimates.
Mike LMK

On 3/24/12, Mike Simonsen <mikesimonsen at mindspring.com> wrote:
> 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