The ATCA Forum

Hello, I want to use uvgen to simulate uv-data for array configurations with more than 64 antenna. Is there a way to get miriad to read a different maxdim.h file when executing uvgen? Or do I have to recompile miriad? Note I am using miriad on the CASS servers so would have to install a local versio...

Hi Mark, Thanks for that. I will implement the selfcalibration manipulating the two planes separately as you suggest. I suspect that this is important for bright, moderately complex sources with steep spectra, alpha<-1, and relatively large delta(nu)/nu (as in my case). I'll let you know how it goes...

Hi Mark, Thanks for your reply. (1) OK, I see. So this default behaviour is not what you would want for a good model. You would want to select the same pixels in both planes by clipping in the I plane and then masking in the I*alpha plane using that clipping. How does miriad deal with an image with ...

Hello, I'm imaging a bright radio galaxy (~0.8Jy at 21cm) with the data from LX and CS receivers. The aim is to achieve high dynamic range to observe relative faint sources and structure within a few arcminutes. I wish to use self-cal to improve the calibration of the radio galaxy. Obviously I'm usi...

Hi Mark, Thanks for that. The question relates from our work on the ATLAS field where we are mosaicing many deep pointings from observations across 1.1-1.8GHz (earlish CABB data). We are imaging with mfclean and then mosaicing with linmos. Obviously, mfclean deals with the wide bandwidth appropriate...

Hello,

Linmos applies a frequency dependent primary beam correction when mosaicing a number of pointings.

- is there an analytical expression for this PB correction as a function of radius and frequency?
- how was this calculated? At certain frequencies and then interpolated?

thanks,

Nick