[vsnet-obs 59160] 2007 Sep 03-05, visual [GRL, NAS.VSS].

[Bjorn H. Granslo]

Norwegian Astronomical Society - Variable Star Section.

Observations from 2007 September 03-05 UT [JD 2454347-2454348].

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_08d.vis.

Variable    YYYYMMDD(UT)  Magn  Obs  Instrum.  Mag.ref  Estimates
CASrho      20070904.02    4.6  GRL  B7x50     NAS.VSS  B-4;D+1 [1]
CYGSS       20070903.993  11.2  GRL  C203;100x NAS.VSS  R-3;K+2 [1]
CYGSS       20070904.985  11.6  GRL  C203;100x NAS.VSS  R-2;K+3 [1]
CYGchi      20070904.02    6.8  GRL  B7x50     NAS.VSS  F-3;G=V [1]
HS2331+3905 20070904.992  11.5  GRL  C203;100x NAS.VSS  L-5;P+6 [1]
HS2331+3905 20070905.032  11.2  GRL  C203;100x NAS.VSS  L-2;ZN+3 [1]
PERTX       20070904.01   10.5  GRL  C203;100x NAS.VSS  D=V;E+3 [1]
SN2007gr    20070904.012  13.0  GRL  C203;100x NAS.VSS  L-1;M+2 [2]
VULV458     20070903.992  11.4  GRL  C203;100x NAS.VSS  K-3;L+1;M+5 [1]
VULV458     20070904.987  11.4  GRL  C203;100x NAS.VSS  K-2;L+1 [1]

*** Remarks concerning HS 2331+3905 ***
This cataclysmic object is in a rare outburst. Comparison stars
(V-magnitudes from TASS-4 and A. Henden): L = 10.88 [TYC 3231-0533];
P = 12.20 [TYC  3235-1281]; ZN = 11.72 [TYC3235-0014]. NAS.VSS
sequence: http://folk.uio.no/bgranslo/sequence/HS2331+3905.seq .
An image using Canon EOS 400D + 100-mm FL f/2.0 (on photo tripod):
http://folk.uio.no/bgranslo/images/HS2331_2007Sep05L.jpg .
HS 2331+3905 is at R.A. = 23h34m01s, Decl. = +39o21'.7 (2000.0).