[vsnet-alert 14855] BL Lac active

[Taichi Kato]

  BL Lac has been active.  There was remarkable intranight
variations in 1997, when visual observations detected
similar nightly variations.  Frequent observations (with CCDs)
may detect similar variations.

  YYYYMMDD(UT)   mag  observer
  20120715.903  <143  (Jose Ripero)
  20120717.899   140  (Jose Ripero)
  20120718.978   144  (Pavol A. Dubovsky)
  20120720.947   136  (Jose Ripero)
  20120721.955   131  (Klaus Wenzel)
  20120721.972   136  (Jose Ripero)
  20120723.057   132  (Gary Poyner)
  20120723.593  11.76Ic  (Hiroyuki Maehara)
  20120723.594  12.49Rc  (Hiroyuki Maehara)
  20120723.892   130  (Klaus Wenzel)
  20120723.892   134  (Wolfgang Kriebel)
  20120723.903   135  (Pavol A. Dubovsky)
  20120723.906   135  (Jose Ripero)
  20120723.946   132  (Gary Poyner)
  20120724.947   133  (Gary Poyner)
  20120725.913   139  (Klaus Wenzel)
  20120726.892   131  (Klaus Wenzel)
  20120727.044   134  (Pavol A. Dubovsky)
  20120729.372  14.32V  (Gustav Holmberg)
  20120730.470  14.29V  (Gustav Holmberg)
  20120730.913   135  (Jose Ripero)
  20120801.891   136  (Jose Ripero)
  20120805.072   140  (Gary Poyner)
  20120806.901   139  (Jose Ripero)
  20120808.882   145  (Klaus Wenzel)
  20120810.049   144  (Gary Poyner)
  20120810.889   145  (Klaus Wenzel)
  20120811.031   145  (Gary Poyner)
  20120811.855   147  (Pavol A. Dubovsky)
  20120811.872   146  (Klaus Wenzel)
  20120813.963   137  (Jose Ripero)