[vsnet-obs 37933] 2002 Jan. 29 UT (GRL)

["Bjorn H. Granslo" <b.h.granslo@astro.uio.no>]

Norwegian Astronomical Society - Variable Star Section

Morning observations from 2002 January 29 UT

Observer: Bjorn H. Granslo (GRL).
Location: Fjellhamar, Norway.
Instruments: 20.3-cm SCT (C203), 7x50 binoculars (B7x50).
Magnitude references: V-magnitudes from Hipparcos and Tycho
catalogues, visual by BAA.VSS.
Observations: Visual, Pogson step estimates.
Condititions: Clear to partly cloudy; Full Moon; windy.

Object      YYYYMMDD(UT)   Mag  Obs  Instrument Ref.    Notes
CRBT        20020129.14   10.5  GRL  C203;100x  Tycho2
CRBR        20020129.14    5.9  GRL  B7x50      HIP
OPHRS       20020129.21  <10.8  GRL  C203;100x  BAA
OPHnova2002 20020129.231   8.9  GRL  C203;100x  Tycho1  Low

Observation of Nova Ophiuchi 2002 from Jan. 29.231 UT: D-1; E+2
(class 2). Comparison stars (V-magnitudes from Tycho-1 catalogue):
D = 8.75 (HIP 86023 = TYC 6235-2867), E = 8.98 (TYC 6248-0642).
Despite moonlight, astronomical twilight and an altitude of
7 degrees I was able to obtain fairly accurate brightness estimates.
The telescopic limiting magnitude was close to 10.0 (TYC 6248-1077,
located  ~75" from nova, was faintly visible).

                                     Yours sincerely,
                                     Bjorn H. Granslo

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