Today was the first day of the SDSS-V Collaboration Meeting in Toronto. We talked about the state of the survey and the survey mission, shared values, and operating principles. This was great; it is the first full in-person meeting since survey start. Much of the day was open working and break-out time.
Late in the day, Adam Wheeler (OSU) made a great plot comparing SDSS-IV velocities (Doppler shifts) to ESA Gaia velocities, as a function of APOGEE fiber. It looks like there are substantial differences, and systematic with fiber. If this is real, fixing it will have a big impact on work I've done on spectroscopic binaries in the sample.
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