Tag: 2018A

We left LCO 48 hours ago.

When we got to La Florida airport in La Serena, it was foggy. And it got foggier. So as we waited for our plane to land so we could board it and travel home, we slowly lost sight of the runway. Then we heard the plane as it buzzed the runway and decided it couldn’t land. That’s a bad feeling.

The official hotel of MagAO, the Casino Enjoy, was full. So we had to downgrade and check into the Costa Real — a.k.a. the GPI hotel.

We ended up with essentially the same itinerary, 24 hours later. So we got some time for a walk around La Serena.

It’s actually been 5 or so years since we bothered to spend time in La Serena. La Recova is the same.

We are now in Dallas. As we landed at 5 am this morning we were greated to notifications that our flight to Tucson was delayed 20 minutes. The delay has continued to grow.

Our next major problem was that the first officer’s chair was broken. We were actually buckled in and ready to go, then they kicked us off to repair the chair. Deplaning number 1.

So. Next. We got on the plane, a little faster having rehearsed once. Everything looked good. Pushed back, taxied for a while, and then stopped. After sitting for a bit, the skipper got back on and started with “Well folks, I guess it’s one of those days . . .” Apparently a fuel gage problem, so we pulled back to a (different) gate.

And then the cops boarded the plane. Yeah.

So we aren’t home yet. We’re back in the terminal in DFW, waiting to board a different plane and try again. We are making lots of friends here in the refugee camp, and AA is giving out free food.

I don’t know where I’ll be tomorrow. I’ll probably still be wearing the same clothes though.

Update:

I’ve been trying to make it home
Got to make it, before too long
Oh I can’t take this, very much longer…

We finally made it:

I’ll admit that I expected my Uber to break down the whole way home.

Hi All,

As is tradition the PI will finish off the run with the last blog. This run marked our 7th year operating at LCO making great images and science. This run was no exception with great science delivered (despite the many clouds we encountered as winter is definitely coming). I’d like to thank all the LCO staff that did a great hosting us and I’d like to thank all the observers that came out to work with MagAO.

I’d like to show some great photos of the packing up process that was done in just one day (a new record).

Below is the ASM ready to be packed up and driven down to the clean room (where it will wait a year for us to come back — but we will come back).

Admin Edit:
Post failed to include a song of the day, please see 2018A Blog Rules.
Therefore the admin will choose a song of the day:

And the cover gave me goosebumps:)

Proto3 has been detached from MagAO, and now MagAO is fully put away. Since this (northern hemisphere) fall will extremely busy with work on MagAO-X, it’ll be a whole year before we’re back here.

My check list for today:

• Switch back to a day schedule all in one go
• Take the last final exam for my first year of graduate school
• Remove a 1000+ lb piece of scientific equipment from the top of a three-story tall machine

I’m happy to report that I accomplished all three, though it may be more accurate to say that I was a minor contributor to the last task. It takes a whole crew to remove the adaptive secondary mirror from the Magellan Clay telescope, and my main contribution was to help Laird keep all the various power, data, and coolant lines from getting away during the disconnect process. (Pink zip ties are the astronomer’s best friend.)

Since I was not operating a crane or lifting 80 lb load spreader bars by hand, I was able to document the process. Enjoy!

Tomorrow, we leave LCO for La Serena (and Santiago and Dallas and Tucson, hopefully without issue). We’ll be back next year!

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Last, but not least, here’s a song of the day about looking through the wrong end of a telescope.

(Lucius – Turn it Around)

And here’s a cover version I dug up by someone with cool hair:

(Kaela Sinclair – Turn it Around (Lucius cover))

Today was the 365th day I’ve spent at Las Campanas Observatory. You only have to go back to May 18th, 2012 to find the first. So 16.7% of my life has been on this mountain over the last 6 years.

It was an interesting 1-year day too. Of course, it was Empanada Sunday. According to my records, my average length of stay has ben 21 days, so ~3 Empanada Sunday’s per visit X 17 visits = 51 total Empanada Sundays in my life so far. Here’s what just one looks like:

My longest stay here has been 44 days. That was what I call the “Death Run”. Late May and early June, telescope open for 13+ hr a night, horrific winds, 5 weeks straight of observing. When Katie reminisces (not fondly) about it, she says “you could sleep, eat, or shower. Pick 1.” Well, to commemorate that on mine and LCO’s 1 year anniversary, here’s a picture from the wind gauge tonight:

We managed to open a couple of times. But when we did it was pretty crappy

Hi All,

Yesterday we mounted the SAO’s Giant Magellan Telescope (GMT) dispersed fringe sensor prototype (Proto3 — Brian McLeod’s 3rd version — it keeps getting better). This is a complex set of infrared cameras and optics that mimic 3 of the GMT primary mirrors boundaries. It is basically a 2 slit experiment that interferes light (to make “fringes”) from the edge of each primary (where they almost touch) of the GMT. In this manner we hope to measure if one primary is slightly higher (out of phase in piston) with respect to the other primary — this will be a critical measurement to enable a diffraction-limited GMT in the future.

So that means we turned Magellan/MagAO into just 3 pairs of slits and look at the interference between the pairs. See photo below of the Magellan pupil with these 3 slits pairs superimposed over it.

The fringes produced by the 2 slits are then dispersed in the vertical direction — in this way it can capture/measure up to ~40 microns of piston between GMT segments.

In the photo below you can see the 1.1-1.3 micron (infrared) spectra of the fringes, here MagAO was locked on 300 modes.

Jan Kansky took this great photo of Proto3 (the box above Derek) mounted on the back of the NAS

The main test of the system is to understand the “fringe behavior” when Proto 3 looks far away from the guide star that MagAO is correcting. Below we show a video of what the fringes look like when the fringes come from a star that is 6 arcminutes away from the guide star.

So in keeping with tonight’s theme — here is a Fringe song about the TV show of the same name:

Here is a different version: