simobserve for ATCA
Posted: Fri Jul 31, 2020 9:09 pm
Hi all,
I'm attempting to pass a radiative transfer model synthetic image through simobserve in CASA in order to measure the residuals between my 34GHz transition disk image (obs on 04/05/16) and a "degraded" synthetic image.
I feel confident with most of the options in the task except for estimating the noise, I know the phase noise option covers any possible cloud cover ect. and setting that to True is fine, but I'm not sure how estimate the thermal noise.
Obviously this needs to be set to manual (thermalnoise='tsys-manual') as ATCA doesn't satisfy the ATM library by J. Pardo's for an atmospheric profile of the ALMA site (thermalnoise='tsys-atm'). The manual entries are the sky temperature at said frequency (t_sky), and the zenith opacity at said frequency (tau0).
Any tips on these variables or advice on the whole process would be greatly appreciated.
Cheers,
Brodie
I'm attempting to pass a radiative transfer model synthetic image through simobserve in CASA in order to measure the residuals between my 34GHz transition disk image (obs on 04/05/16) and a "degraded" synthetic image.
I feel confident with most of the options in the task except for estimating the noise, I know the phase noise option covers any possible cloud cover ect. and setting that to True is fine, but I'm not sure how estimate the thermal noise.
Obviously this needs to be set to manual (thermalnoise='tsys-manual') as ATCA doesn't satisfy the ATM library by J. Pardo's for an atmospheric profile of the ALMA site (thermalnoise='tsys-atm'). The manual entries are the sky temperature at said frequency (t_sky), and the zenith opacity at said frequency (tau0).
Any tips on these variables or advice on the whole process would be greatly appreciated.
Cheers,
Brodie