[vsnet-alert 17189] Re: MASTER OT J175924.12+252031.7 - Possible Nova in Hercules (12.7m)

[Kirill Sokolovsky]

I confirm the presence of the object on 2014 04 10.47553 UT at the reported 
position using a remotely-controlled 105mm telescope 
(iTelescope.net-T20) + unfiltered CCD SBIG STL-11000M.

The object is ~13.3 mag.; position:
17:59:24.18 +25:20:32.5 +/-0.4" J2000

The astrometric position and the unfiltered magnitude scale are 
calibrated against UCAC3. A nearby star blended with the flaring object 
affects the astrometry and photometry.

The original wide-field FITS image is available at:
http://scan.sai.msu.ru/~kirx/img/wcs_Calibrated-T20-ksokolovsky-master_pnv-20140409-052433-Luminance-BIN1-E-020-001.fit

With best wishes,
Kirill


On Thu, 10 Apr 2014, Denis Denisenko wrote:

> If you open SDSS image and click zoom (+) 3 times, one can suspect the
> blue star hidden behind the brighter red dwarf at 4 o'clock (WSW)
> direction:
> http://skyserver.sdss3.org/dr8/en/tools/chart/chart.asp?ra=269.85084854&dec=25.34254633
>
> So, there may actually be three stars where SDSS is seeing two! Then
> WZ Sge scenario becomes not so impossible as I originally thought.
>
> Also, keep in mind that the robotic photometry of MASTER unfiltered
> images with the red zero point is often too bright by ~0.5m. If you
> observe MASTER OT J175924.12+252031.7 in V band, I would expect ~13.2
> magnitude rather than 12.7.
>
> Denis
>
> On Thu, Apr 10, 2014 at 3:11 PM, Patrick Schmeer
> <pasc1312-aavso at yahoo.de> wrote:
>> GALEX J175924.3+252032 (NUV 21.8 mag) is 2.7" from the new object:
>> R.A. 17h59m24.31s  Decl. +25°20'32.5"  (J2000.0)
>>
>> Regards,
>> Patrick
>