We acquired the 30th spectrum with HARPS on February 27th at 8.40 UTC from La Silla. James Silverster was the observer at La Silla and he send life updates of the moment. His team is using HARPS in polarimetric mode to make measurements on stellar magnetic fields. We will have an article at palereddot.org from them soon, so you can see how stellar magnetic fields can be measured in practice.
Here is an extract of the twitter and Facebook live feeds of the event:
08:30 UTC :All green lights at ESO Astronomy La Silla. One more spectrum and we will reach 30/60! Standing by!
08:46 UTC : @Pale_red_dot > Cool! Send us a picture!!!
08:58 UTC : @jimmysilvers > here you go!
08:50 UTC : @Pale_red_dot > Yesss, that’s a live image of Proxima’s photons being sucked by HARPS science fibre (dark central hole). Awesome
08:55 UTC :While we wait for the integration to end, how about a stroll and a look at the sky from La Silla? Thx @jimmysilvers[caption id="attachment_1251" align="alignnone" width="474"] Southern sky at the end of February from La Silla observatory. Credits : James Silvester
09:15 UTC : Integration complete. File saved, stored, and shipped to ESO’s HQ at Garching. Thanks James for sharing these moments.
09:20 UTC : @Pale_red_dot > success! 50% data collection achieved! #palereddot
09:30 UTC : Bedtime for the observers. Really high success rate so far. Lots of updates and articles next week! thx for following