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IDG: Image Domain Gridding

Posted: Wed Dec 04, 2019 10:51 pm
by Ada Coda
IDG: Image Domain Gridding

Abstract: IDG (Image Domain Gridding) is an imager that makes w-term corrections and a-term corrections computationally very cheap. It works with WSClean (ascl:1408.023) and supports the same cleaning and data selections options that WSClean offers in normal mode (such as cotton-schwab, multi-frequency multi-scale cleaning, and auto-masking). IDG also allows gridding with a time-variable beam including the LOFAR, AARTFAAC and MWA beam and can perform full beam or differential correction. The code requires measurement sets with four polarizations (<i>e.g.</i> XX/XY/YX/YY), can apply a spatially varying time-variable TEC term that can additionally be different for different antennas and output channels, and performs extremely well on GPUs.

Credit: Veenboer, Bram; Petschow, Matthias; van der Tol, Sebastiaan; Offringa, André R.


Bibcode: 2019ascl.soft11011V

Preferred citation method:

ID: ascl:1911.011