gpcopy 12 hour tolerance

[minh25]

Hi Mark and Jamie, et al.,

I'm trying to calibrate some 16cm continuum data that has observations over a timespan > 12 hours.

I do a usual mfcal, gpcal on 1934-638:
mfcal vis=1934-638.2100 refant=4 interval=0.1 options=interpolate
gpcal vis=1934-638.2100 refant=4 interval=0.1 options=xyvary nfbin=16

I then gpcopy to the secondary, 2333-528 and run a gpcal on that:
gpcal vis=2333-528.2100 refant=4 interval=0.1 options=xyvary,qusolve nfbin=16

This worked for the first day, but the second day (and possibly others) were longer, with observations > 12 hours.

Is there a way to make gpcopy forget about the 720 minute limit here?

I tried :
puthd in=2333-528.2100/tolerance value=900
but got this:
puthd% go

puthd: Revision 1.3, 2011/09/15 05:53:36 UTC

New item tolerance created with datatype integer
### Fatal Error: End of file detected

Or do I just gpcopy only the bandpass and run both mfcal, gpcal on the secondary?

thanks,
Minh

[ste616]

Hi Minh,

The correct command to increase the interpolation tolerance is:

puthd in=2333-528.2100/interval value=0.625

The 0.625 arises because value is specified in days. This method is described more fully in the Miriad Users Guide:

http://www.atnf.csiro.au/computing/soft ... ode99.html

[minh25]

Okay, thanks Jamie. I'll keep that in mind for next time.

I worked around it by doing an initial flagging in pgflag with options=nocal,nopol, getting most of the RFI out, then gpcal on 2333-528.2100 to generate its on solutions, and then pgflag etc. uses the gain tables in 2333-528 and no data after 12 hours is "flagged".

thanks again,
Minh