[vsnet-obs 20485] Supernova obs. 1999 May 03-06 UT

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

Norwegian Astronomical Society - Variable Star Section

Observations of supernovae (SN 1999by in NGC 2841 and SN 1999bz
in UGC 8959) by observers of NAS.VSS (Report 1999v-027):

Object       YYMMDD(UT)   Mag   Obs  Instrum    Notes
SN1999by     990503.958  14.3   MOK  M316;173x  Seq. C&F (V-mag)
SN1999by     990503.981  14.5C  TOL  M610+CCD   Seq. USNO-A2.0
SN1999by     990505.90   13.4C  Fre  C203+CCD   Seq. C&F (R-mag)
SN1999bz     990506.04   17.5C  Fos  C203+CCD   Seq. USNO-A2.0

Fos = Stig Foss (Hosle, Norway). Instrument: 20.3-cm SCT +
  unfiltered ST-6 CCD camera. Magnitude deduced by B. H. Granslo,
  using r-magnitudes of nearby stars from the USNO-A2.0 catalogue.
  Image: http://vsnet.astro.uio.no/~bgranslo/images/ccd/ugc8959_2.jpg
Fre = Torbjorn Fredriksen (Skien, Norway). Instrument: 20.3-cm f/4.7
  SCT + unfiltered Pixcell 255 CCD camera. Image made from four
  exposures, each of 15 seconds. Magnitude deduced by B. H. Granslo.
MOK = Ornulf Midtskogen (Tranby, Norway). Instrument: 31.6-cm f/4.9
  reflector. Visual observation using step estimates.
TOL = Odd Trondal (Groruddalen Optical Observatory, Oslo, Norway).
  Instrument: 61-cm cassegrain reflector + unfiltered ST-4 CCD.
  Magnitude derived by observer.

Supernova observations by undersigned are reported separately.

                               Yours sincerely,
                               Bjorn H. Granslo

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