Name of the Speaker(s):L.O. Takalo
Institution: Tuorla Observatory, FIN-21500 Piikkio, Finland
Title of the communication: Spectral variability in 3C66A observed during a multifrequency monitoring campaign.
Preliminary abstract (12 lines max.): BL Lac object 3C66A has been monitord for three years during the OJ-94 project. It has been seen about one magnitude brighter than its historical light curve indicates. The light curves show continuous variability from time scales of tens of minutes to weeks. Here we will present results from this monitoring, concentrating on the spectral variability and its correlations with objects brightness.