Thursday, March 29, 2018

JWST delay and my best tweet yet

This week, the astronomical community heard that the James Webb Space Telescope was delayed by a substantial amount of time. More importantly, the deadline for proposals was also delayed by a good 11 months.Considering that most astronomers submit to HST like this:


One could assume only a few people really gotten started and not much time had been wasted anyway...

Given the fact that I am typically one of those people that submits a first version at the beginning of the x-axis of this plot...I... wasn't happy. Neither were most of my collegues who pretty much all had been working hard on science cases and teaching themselves how to talk JWST instrument for the last few weeks.

Which brings me to the --according to Bill Keel-- uncharacteristicly Zen tweet of mine. Delays in JWST remind me of one of the best talks on instrument development I have ever heard during "400 years of the telescope" at the ESA's ESTEC by Bob O'dell:



The x-axis is a decade and a half. There are 9 separate delays in this plot. All of them genuinely unforseen issues with Hubble. The mirror deformation isn't even in here! So if you are building a space telescope, a Zen attitude helps. Probably.



The delays for both were helpfully graphed and frankly...given the fact that a servicing mssion is impossible, we are par for the course. It is what it is. I know for certain that STSCI made that difficult decision as soon as they could. Proposals for time are taken very seriously.

At least I got my most popular tweet of all time (K. Mack mid-range!) out of it.















Saturday, March 10, 2018

Keck Observing Run

This week was my first Keck Observing run, thanks to Joanna Bridge’s work on bright z~8 galaxies.

It has been an emotional rollercoaster: MOSFIRE appeared to have conprehensibly broken only two nights before ours and the weather had been atrocious. It did not look good.

But we trekked out there and first we were going to see the summit. That was amazing! We all geeked out over the beauty and conplexity that is a modern telescope. And the trek up the mountain is ansolutely stunning.


And then! MOSFIRE’s issues was a cable, not a broken cool head. It could be repaired. The weather cleared up more.


And then! We were on sky. Getting photons. One half night hammering one object.


And then back to Louisville! 4 flights...