Jon,

I have had discussions with the AIPS group and short discussions with
both Craig and Joan to find the optimal way to append the Tsys values
of Arecibo into AIPS.

ANTAB  recognizes a gain curve, but it doesn't recognize a Tsys curve
or add corrections to it that are dependent on the flux density of the
sources.

So, the only way would be to make a keyin format text file which
includes the gain curve and the Tsys values for each source as a
function of time. For this purpose I'am modifying the SCHED output text
file for Arecibo which has time, elevation and  source name information
in addition to other stuff. I will generate a column in this text file
which has the Tsys values given as:
Tsys= Tsys_curve(ZA)+ Flux density(source)*gain_curve(ZA)
throughout the whole Arecibo run.
Once this is done, the reduction will become straight forward and back
on track.


Tapasi,

Thanks to you and Chris for providing the Tsys curve and mentioning the
need of correcting it.
Would you please provide me with the RFI information during BM159b's
run, if it is available? I would like to flag the RFI time ranges,
specially the strong ones, from the UV data, so that the a priori
amplitude calibration would be as accurate as possible.


Cheers,
Emmanuel