ar X iv : a st ro - p h / 06 10 22 7 v 1 8 O ct 2 00 6 Optical Photometrical Observations and Variability for Quasar 4 C 29 . 45

Abstract

We reported the result of long term optical variability of the blazar 4C 29.45 (QSO 1156+295, Ton 599), carried out optical photometric observations in Johnson V, Cousins RI passbands during April 1997 to March 2002 using the 1.56 meter telescope of the Shanghai Astronomical Observatory (SHAO) at Sheshan, China, compiled the post-1974 optical photometric… (More)

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