[vsnet-obs 59179] 2007 Sep 06 UT, visual etc. [GRL, NAS.VSS]

[Bjorn H. Granslo]

Norwegian Astronomical Society - Variable Star Section.

Observations from 2007 September 06 UT [JD 2454349].

Observer: Bjorn H. Granslo [GRL].
Location: Fjellhamar, Norway.
Instruments: 203-mm SCT [C203]; 7x50 binoculars [B7x50].
Observations: Visual, Pogson step estimates.
Report identification: grl_2007_09b.vis.

Variable    YYYYMMDD(UT)  Magn  Obs  Instrum.  Mag.ref  Estimates
ANDZ        20070906.05   10.5  GRL  C203;100x NAS.VSS  L-1;M+2 [1]
CYGSS       20070906.047  11.9  GRL  C203;100x NAS.VSS  R-5;K=V;L+4 [1]
HS2331+3905 20070906.024   8.5  GRL  B7x50     NAS.VSS  E-3;F+2 [1]
SN2007gr    20070906.055  13.1  GRL  C203;133x NAS.VSS  L-2;M+2 [2]
VULV458     20070906.048  11.4  GRL  C203;100x NAS.VSS  K-2;L+1;M+5 [2]

Remarks:
(1) The catalcysmic object HS 2331+3905 was seen in a bright outburst.
   It was clearly visible in 7x50 binoculars. Comparison stars (V-mags.
   from TYC-2 w/Bessell): E = 8.15 [HD 221598]; F = 8.73 [HD 221025].
   Images from Sep 5.0 UT and Sep 6.0 (Canon EOS 400D + 100-mm f/2.0):
   http://folk.uio.no/bgranslo/images/HS2331_2007Sep05L.jpg ,
   http://folk.uio.no/bgranslo/images/HS2331_2007Sep06L.jpg .
   NAS.VSS chart: http://folk.uio.no/bgranslo/charts/HS2331_c.gif .

(2) Comparison stars for Supernova 2007gr in NGC 1058 (V-magnitudes by
   A. Henden): L = 12.87 [GSC 2337-0180]; M = 13.25 [GSC 2337-0310].