2022 Session I (c221)

Haystack Hs

In track C221C station Hs is to be correlated at Haystack. Bonn extracted data of scans 093-0015 093-0030 093-0045 093-0100 093-0115 and 093-0600 from stations EF, YS, OV, PT, KP, and e-transferred them 03may2022 to Haystack for processing there.

ATCA 86 GHz

Info from Cormac R. The ATCA data for Bonn are tracks A, C, E.

ATCA recordings are dual datastream 2-ch 2-bit with c221?_DAS1_*.lba files containing the first 64 MHz band (dual pol), and c221?_DAS1_*.lba the second 64 MHz band. Requires v2d format=LBASTD.

Filelists produced via DiFX chk_vlbi.py, e.g.,

ls -1 /data/c221a/atca/*.lba > atca_c221a.datafiles
chk_vlbi.py atca_c221a.datafiles
grep DAS1 x > at_das1.flist
grep DAS2 x > at_das2.flist

Reference antenna was on pad W102 (track A, C) and pad W45 (track E) according to DiFX Espresso atcapos.py for the VEX time ranges that AT was scheduled under tracks A/C/E. Using Espresso updatepos.py, and the env var STADB pointing to Sched 11.6 locations.dat, the corresponding VEX site coordinates are:

* W102 Tracks A and B
site_position =  -4751655.39672 m: 2791673.9797 m: -3200491.11339 m;
site_velocity =  -0.03099 m/yr: -0.00458 m/yr: 0.04203 m/yr;
site_position_epoch = 50449;

* W45 Track C
site_position =  -4752098.19972 m: 2790922.2537 m: -3200491.11339 m;
site_velocity =  -0.03099 m/yr: -0.00458 m/yr: 0.04203 m/yr;
site_position_epoch = 50449;