Pre-CABB bootstrapping

[Stephan]

Dear all,

A question about bootstrapping calibration tables. I notice that in the CABB era we use mfboot and gpboot to calibrate the secundary calibrators. I'm currently working on pre-CABB data, but the manuals confuse me a bit. I have been working with the Jess O'Brien spectral lines tutorial for IC5052 as my guide. In that tutorial she makes no mention of those two tasks. Using Google I stumbled on some pages by people who are using bootstrapping in their data.

So my question is: Do I need to bootstrap my secundary calibrator to the primary using one or both of these tasks?

Thanks!

[Mark.Wieringa]

Hi Stephan,

It depends on the frequency of your observations.
At low frequency you should use gpboot to scale the calibration with the secondary back to the flux scale of the primary (1934-638)
If you used a planet for flux calibration (at high frequency) you should use mfboot.
At low freq mfboot is less important for pre-CABB data, but can be run as well - it fixes the spectral slope.

Cheers,

Mark

[Stephan]

Hi Mark,

Sorry, forgot to mention that. It's the 21cm line.

Thanks for the advice. I'll run pgboot over my secundary.

Cheers,
Stephan