[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

[vsnet-obs 38423] 2002 Feb. 14-15 (GRL)

Norwegian Astronomical Society - Variable Star Section

Observations from 2002 February 14-15 UT

Observer: Bjorn H. Granslo (GRL).
Location: Oslo & Fjellhamar, Norway.
Instruments: 20.3-cm SCT (C203), 15.2-cm reflector (M152),
  naked eye (NE).
Magnitude references: V magnitudes from Tycho-2 (via Bessell's
  transformations) and Hipparcos catalogues; NAS.VSS sequence.
Observations: Visual, Pogson step estimates.
Conditions: Poor conditions (mist/haze/clouds) on Feb. 14
  (evening), much better on Feb. 15 (morning).

Object      YYYYMMDD(UT)   Mag  Obs  Instrument Ref.    Notes
MONV838     20020214.864   8.1  GRL  M152;107x  NAS     Active
GEMU        20020214.878 <11.2  GRL  M152;107x  AAVSO
GEMU        20020215.207  10.4  GRL  C203;123x  TYC2    Outburst
CAMZ        20020215.208  10.6  GRL  C203;123x  TYC2    Outburst
CRBT        20020214.21   10.4  GRL  C203;123x  TYC2
CYGchi      20020214.21    4.4  GRL  NE         HIP     Bright!

Observation of V838 Mon from Feb. 14.864 UT: G-7;J=V;K+4 (class 2).
Comparison stars (NAS.VSS sequence with V magnitudes derived from
UBV and Tycho-2 catalogues): G = 7.47, J = 8.17, K = 8.48.

Remarks concerning U Gem: The first observation was made immediately
after Mike Linnolt's notification of the outburst [vsnet-alert 7191],
but I was not able to secure a reliable positive observation due to
poor sky (although I may have glimpsed it at mag. ~11 1/2). Late at
night, however, the sky cleared and I was able to obtain a second
observation that showed that U Gem had brightened rapidly during
this night!

                              Yours sincerely,
                              Bjorn H. Granslo

VSNET Home Page

Return to Daisaku Nogami

vsnet-adm@kusastro.kyoto-u.ac.jp