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[vsnet-obs 12102] VS observations by S.Yoshida (May 20,21)


Visual magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
CASV723        980521.757   120  Yos.VSOLJ
SGRV4334       980520.676   122  Yos.VSOLJ
SGRV4368       980521.731   105  Yos.VSOLJ
SGRnova1998    980520.647   107  Yos.VSOLJ

Observer's code:
  Yos: S. Yoshida

Comparison stars and instruments used:
CASV723      USNO-A1.0, V mag [=R+0.375(B-R)]  46.0L f/4.5 + 12.5mm
SGRnova1998  GSC 1.1                           31.7L f/6.3 + 30mm
SGRV4368     Tycho Catalog                     46.0L f/4.5 + 12.5mm
SGRV4334     USNO-A1.0, V mag [=R+0.375(B-R)]  31.7L f/6.3 + 30mm

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