The first GMVA fringes to NOEMA after its upgrade. Single-dish setup, R2DBE, not NOEMA correlator output.
In scan 2 two polarizations are IF0 and IF1, both correlated as "RCP" (and so both designated as R in the plots, be careful if printing or copying these!) for technical reasons. Because apparently the quarter-wave plate was inserted incorrectly, neither really represents RCP or LCP, as can be seen from similar SNR in correlations to LCP and RCP of other stations. The real polarization must be unknown elliptical or linear.
In scans 1 and 3-6 "LCP" is IF0 and "RCP" is IF1. The polarization behavior is similar in all scans, SNR is approximately the same for LL, LR, RL, and RR.
The first GMVA fringes to NOEMA after its upgrade. Single-dish setup, R2DBE, not NOEMA correlator output.
In scan 2 two polarizations are IF0 and IF1, both correlated as "RCP" (and so both designated as R in the plots, be careful if printing or copying these!) for technical reasons. Because apparently the quarter-wave plate was inserted incorrectly, neither really represents RCP or LCP, as can be seen from similar SNR in correlations to LCP and RCP of other stations. The real polarization must be unknown elliptical or linear.
In scans 1 and 3-6 "LCP" is IF0 and "RCP" is IF1. The polarization behavior is similar in all scans, SNR is approximately the same for LL, LR, RL, and RR.