Bandpass Calibration for CARMA

Lisa Wei, University of Maryland
Dave Woody, Caltech
Peter Teuben, Misty La Vigne, Stuart Vogel
University of Maryland


Abstract:


   Ideally, one would calibrate the shape of the spectral bandpass with
   observations of a strong astronomical source with a flat spectrum.
   In the narrower bands, however, such observations would be
   prohibitively costly in observing time in order to reach sufficient
   signal-to-noise. In this memo we present bandpass calibration
   techniques for different correlator modes at CARMA, with focus on
   the bandpass calibration for narrowbands (31 MHz and below)
   utilizing the noise source.