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[vsnet-obs 6488] CCD observation of BL Lac



  Through a gap in clouds (variable condition)
  comparison: V=13.32 (f) star

object         YYMMDD(UT)    mag  code
LACBL          970731.60135 13.66V  Oud
LACBL          970731.60220 13.65V  Oud
LACBL          970731.60307 13.65V  Oud
LACBL          970731.60390 13.66V  Oud
LACBL          970731.60473 13.66V  Oud
LACBL          970731.60557 13.73V  Oud
LACBL          970731.60640 13.74V  Oud
LACBL          970731.60723 13.69V  Oud
LACBL          970731.60807 13.72V  Oud
LACBL          970731.60890 13.65V  Oud
LACBL          970731.60973 13.75V  Oud

  * observer: T. Kato (Ouda Station, Kyoto University)
  * telescope: 60-cm refl. + CCD + V-filter