My watch tracks my nighttime O2 saturation, and it's always a fun time to look at the data when I've been changing altitude:

We're training the SPT winterovers on how to do EHT observations this week. Here's the first planet pointing of the season. #saturn #EventHorizonTelescope #SouthPoleTelescope

Seedlings sprouting in the South Pole greenhouse #antarctica #SouthPole

A nice solar halo display to start the day off right. #SouthPole #SouthPoleTelescope #antarctica #science #astrodon

Made it to McMurdo on Monday. We have to isolate here for 5 days before we can continue to Pole, but we're allowed to enjoy the many great hikes around McMurdo while we're in isolation. Here's a few of us Pole-bound folks on the Cape Armitage loop hike, one I've never done before. Mt Erebus on the left. #antarctica #science #hiking #McMurdo #southPole #astrodon

My ride today. #antarctica #NZAF #c-130 #herc #science #astrodon

Lining up waiting to check in for our flight to McMurdo. If we fly today, we'll be on a NZAF C-130. #antarctica #science #astrodon

At clothing issue on my way to the #southPole : I think the first coat they tried to give me was a little bit too big....
#antarctica #science #astrodon

After a 2-week delay due to a covid outbreak in McMurdo, I'm finally on my way to the South Pole! I'll be doing some receiver maintenance and providing some training for EHT (the Event Horizon Telescope) #science #antarctica #astrodon #astronomy

When you should have put in one more test point...
#electronics #science #astrodon #astronomy