Date: Mon, 15 Oct 2012 15:53:55 -0400 (EDT)
From: Alice Argon 
To: Jun-Hui Zhao 
Cc: Chunhua Qi 
Subject: Frequency Shift in MIR and/or MIRIAD, side issue

Jun-Hui and Charlie,

This is a side issue, but I thought I'd mention it.  Perhaps it has to
do with my misuse of MIR.

I calibrated the data in MIR and wrote to FITS format using write_fits.
I explicitly included all 48 bands:

write_fits, filename='110217_120049_i16293a_lsb_mir', source='i16293a', sideband='l',
band=['s01','s02','s03','s04','s05','s06','s07','s08','s09','s10','s11','s12','s13','s14','s15','s16','
s17','s18','s19','s20','s21','s22','s23','s24','s25','s26','s27','s28','s29','s30','s31','s32','s33','s
34','s35','s36','s37','s38','s39','s40','s41','s42','43','s44','s45','s46','s47','s48']

This is a 128 channel track (all bands), so this should be OK.

Anaelle Maury writes:

 "I'm looking at the data now, but I have a problem with the MIR datafiles:
  they don't show properly neither in CASA or GILDAS.  This is pretty weird
  (lots of observing dates, sources etc) but I think it might be due to the
  numerous spectral chunks written all-together in the same file by MIR,
  while MIRIAD concatenate them to make only one big spectral window."

Thanks,
 Alice