Speaker
Description
Fringe stopping prior to cross-correlation allows longer visibility integration times without introducing de-correlation, which in turn allows the size of the correlator output products to be substantially reduced. The new correlator for the MWA, "MWAX", was designed from the outset to include pre-correlation fringe stopping. However, it was not supported in the first operational release and users were required to perform phase corrections post-correlation within tools such as Birli or pyuvdata. Pre-correlation fringe stopping has now been fully integrated into MWAX and validation testing is in progress. Subject to final sign-off, the intention is for fringe stopping to be made available as an optional user setting on all observations taken from the beginning of 2023 onwards. This talk will describe MWAX's implementation of fringe stopping and present validation test results to date.
