Optimizing Spatial Frequency Data Weights for High Precision Imaging with ALMA
Abstract
We have conducted imaging simulations of observations for wide field with ALMA (Atacama Large Millimeter/submillimeter Array), which consists of ACA measuring very short spacing visibilities and 12 m Array measuring longer spacing visibilities. The results show that big uv response gap between shorter spacings and longer spacings degrades image precision considerably. It suggests importance of sensitivity equalization in uv domain between ACA and 12 m Array for obtaining precise images.
- Publication:
-
Astronomical Data Analysis Software and Systems XIX
- Pub Date:
- December 2010
- Bibcode:
- 2010ASPC..434..337M