The CARMENES-PLUS cooling system upgrade achieved 0.67 m/s intrinsic RV precision in the NIR channel, with nightly zero-point scatter reduced from 6.1 to 3.9 m/s and median stellar scatter from 8.8 to 6.7 m/s for slow rotators.
Con- vective shift and starspot constraints from chromatic radial velocities
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Improving radial velocity precision with CARMENES-PLUS:An upgrade of the near-infrared spectrograph cooling system
The CARMENES-PLUS cooling system upgrade achieved 0.67 m/s intrinsic RV precision in the NIR channel, with nightly zero-point scatter reduced from 6.1 to 3.9 m/s and median stellar scatter from 8.8 to 6.7 m/s for slow rotators.