search

Keck-DataReductionPipelines / KPF-Pipeline

KPF-Pipeline
https://kpf-pipeline.readthedocs.io/en/latest/
Other
11 stars 2 forks source link

RV is inconsistent between Red and Green CCDs #820

Open howardisaacson opened 7 months ago

howardisaacson commented 7 months ago

Looking at the Cross correlations in the QLP, the red and green CCDs a small offset on the plots, about 4 km/s. I cannot tell if this is a plotting issue , has to do with the new WLS in the post-servicing mission, or is something else. example

red_ccd_hip94931_ccf_shifted green_ccd_hip94931_ccf_ok
awhoward commented 7 months ago

It would be instructive to learn which one is "right" based on comparisons with systemic velocities measured by HIRES or other facilities.