PU CMa: further data from Peter Nelson Dear Colleagues, We have received the most recent data from Peter Nelson (May 28). The data confirm the presence of 0.15-mag superhumps, as inferred from Santallo's observation. The superhump period is consistent with the estimate reported yesterday. Further observations to extend the observation baseline are strongly encouraged to unambiguously determine the superhump period an period excess. An image is also posted at: http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/PU_CMa/nel1.jpg which shows recommended comparison stars (the same ones we have been using). Regards, Taichi Kato VSNET Collaboration team

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