Receiver Gain Calibration for Radio Observations at the Waseda Nasu Pulsar Observatory

We have started programs at the Waseda Nasu Pulsar Observatory to identify EGRET γ‐ray sources and to search for radio transients. The observed frequency was \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $1.4\pm 0.01$ \end{document} GHz, and eight‐element spherical dish antennas were used as four pairs of interferometers, with each element 20 m in diameter. The observable region was ±5° from zenith, covering a region of sky \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackag...