Clean and MEM
Posted: Fri Dec 12, 2014 11:37 pm
I have a question about the imaging of the ATCA HI line mapping data.
I am now concerning the imaging of HI mosaic data without continuum subtraction.
Imaging by "mosmem" doesn't work well around the strong, point-like background sources (the shape of the spectra was somewhat winding), may be due to the weakness of MEM method to the point sources.
I think it is better to do the "clean" first for these point sources, and then do "mosmem" for the residual image, but unfortunately I could not figure out how to do such kind of Clean and MEM combination.
Could you tell me how to do this on MIRIAD?
I would be happy to be told if there are any better way to do this kind of imaging.
I am now concerning the imaging of HI mosaic data without continuum subtraction.
Imaging by "mosmem" doesn't work well around the strong, point-like background sources (the shape of the spectra was somewhat winding), may be due to the weakness of MEM method to the point sources.
I think it is better to do the "clean" first for these point sources, and then do "mosmem" for the residual image, but unfortunately I could not figure out how to do such kind of Clean and MEM combination.
Could you tell me how to do this on MIRIAD?
I would be happy to be told if there are any better way to do this kind of imaging.