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Table of Contents
26m Pointing Solutions
This page describes work to use the PCFS on hobart and the Hobart 12m DBBC to measure pointing and gain characteristics of the 26m.
Setting up
Use the PCFS version that uses dbbchb in DDC mode and mk5hb
hobart: fs-mk5hb
Starting the observations.
Check that the sources you want to observe are not commented out. Edit /usr2/control/ctlpo.ctl if necessary. Then:
proc=point initp acquire
Data will be logged to /usr2/log/sx.log
Stoping the observations
In the field system:
kill
Then zero out the offsets:
prep
Understanding the solutions
Search the RA wiki for Bricky
See also:
newsmerd: ~/Brucehack.sh
To mount image of 26m antenna control floppy:
mount -o loop sys26m.june2017.img /mnt/usb/
Useful pages
Observing log
2017 18 - 23 Oct: Observing three sources around Dec = -42 to look for repeatability of pointing over full elevation range, get idea of variation in gain.
2017 23 Oct - : Paused for Callisto noise diode monitoring
2018 23 - 24 Feb : All-sky survey. Lots of non-detections, presumably due to poor weather. Cloud, rain. Data may not be much use for gain curve measurement. Stopped at 055/00:20 UT due to poor weather.
2018 25 Feb : 056/2240 UT : started observations again in good weather. Much tweaking of source list and got working by 057/0305 (26 Feb) UT. ~10:00 UT: Simon takes over for VLBI NAPA
26 Feb ~21:00 UT: Re-started pointing but SX looks to be warm. Asked Brett to investigate. 058/10:38 : Stopped.
67/22:30 UT: Started in good weather following fix of hydraulics fault. Stopped by Simon at ~68/02:00 UT
79/01:40 UT: More pointing. Wind close to limbs, partly cloudy.
