Tag: 2024B

With our third car stolen by an unknown observer/animal on the mountain/crew a few days ago, the uber arrangement for our 9 people crew has been a bit tricky. Two brave and kind souls volunteered themselves for a hike up to the telescope, Eden and Katie. They were soon rewarded with spotting of the cutest clean room vizzy on this run (thus far).

Before the dome opening, the crew added the 24B sticker onto the instrument. (Yeah, we are a lil’ late this run).

The sunset viewing session proceeded after the “ensticken” ceremony. Parker’s head acted as the coronagraph for the group photo. Please try to call him by his new middle name, “The Vortex”, from now on. The long anticipated green flash was finally captured by human eyes. On video, which was taken by our one and only Professor Close, the flash doesn’t seem to be so green.

Along with our T.O.’s arrival, a basket full of empanadas entered the kitchen. Whether if the cheese empanadas were deep fried this time around remains a mystery, but they were a lot less greasy, which made it a lot more enjoyable for the meat and non-meat eaters.

On the science end, the first half of the night was VIS-X time, and Sebastiaan observed quite a few targets in high resolution mode during this time. These data will probably be reduced by one of his current or future grad students, so look out for more MagAO-X papers? The good seeing persisted through the second half of the night, which was an joint collaboration between Jensen (graduate student from MIT) , Gabrielle, and us. We spent the rest of the night observing a protoplantary disk in Halpha.

Song of the Day

Since we are now in South America, I have been trying to listen to more music from this continent, particularly pieces by Astor Piazzolla. Per the 24B blog rules, I must include two sentences from the song in the blog post. So here are the lyrics that I like the most:

“Y canto un tango que nadie jamás cantó
y sueño un sueño que nadie jamás soñó,
porque el mañana es hoy con el ayer después, che!”

As a non-Spanish speaker, I won’t attempt to translate for you. I would suggest a google search instead.

Last night, after such quality science, and the night before with rapid fire engineering accomplished, tonight was set to be a good mix of the both. Jared engineering in the early eve and Sebastiaan reanimating the Vis-X visible spectrograph for the rest of the night.

Alas, the mountain had other ideas for how we should be entertained. But what’s a crisis to this elite team? What’s two? What’s three? We are robust, especially with a remote PI directing us like agents on chessboard. Today we survived a glycol booger, a power outage, and mysteriously missing vis-x camera software. Ultimately, it’s not a novel crisis that dampened the night, but our old enemy atmospheric seeing.

Wakey, wakey, rise and shine, the computers are at 99 (deg C). Do not fear, the timely work of Parker and Jay before dinner, in which they had to squeeze the tubes and flush the filters and whatnot, halved the temperatures our control computers. Computers which we would prefer to not live at boiling temps.

The glycol team triumphantly entered the dining hall before service stopped, a real win considering how often we miss dinner for these kinds of things. The night was off to a good start with clear skies and decent seeing for the first few hours of engineering. By the time engineering wrapped up, things were looking very un-twinkly.

Next up, Sebastiaan. Which required half a postdoc professor in the instrument to shift the optics into a Vis-X configuration. Fingers in the blackbird pie, if you would. His spectrograph disperses visible light from 400-900nm in both low and high resolutions modes.

And then things got dark. Literally, the power went out for a good minute. It’s on again, off again, on again. But MagAO-X? It stayed on. A testament to ol’ reliable, the UPS’s. Almost simultaneously, Joseph sprinted to get camera software back where it should have been on ICC. No really, we should all be impressed and very grateful the whole thing didn’t fall apart. Take a bow, take a bow, take a bow.

Back in action, we were pumped to start seeing the spectra roll in:

But then we started to look more like this:

For no good reason, the seeing spiked. And when we say spike, we mean a dramatic 0.6″ to 1.7″ swing. And then we were looking at the DM struggling. The seeing was so unfriendly that even our backup backup engineering targets weren’t interested in the 6.5m telescope.

This didn’t stop our tenacious dutchman from exposing till civil twilight.

All things considered, it was a night. We’re still adjusting to the sleep schedule, and the people are sleepy. Enjoy some photos, and we’ll see you tomorrow. Hopefully we’ll get more of the 0.4″ nights and no more of this 1.2″ nonsense.

Bonus: inaccurate quoting

Thanks to Elena’s camera enthusiasm, we now have a little piece of midnight whimsy captured. For better or for worse. Hover for some choice quote picks that have been randomly assigned.

Thanks Elena! Thanks everyone for having no filter at 3am! or 3pm!

Song of the Day

As per the rules, lyrics from the song of the day can be found sprinkled throughout the blog.

Yesterday, we did an amazing job in setting up MagAO-X. Even without direct presence of the PI. Go team! We got the system working at sunset and we spent the whole night performing engineering tasks. One of the last tasks of the night was testing the first coronagraph that Elena made. Below in the picture we see Elena performing her first observations with a successful test of the PIAACMC! Can you find the two planets in the picture?

After a long day of almost 24 hours, we al were very tired and decided to go to bed. I was looking forward to a long day of sleep because I stay out too late if we observe. However, the Earth had other plans for us.

First I thought the Earth was just being rude but then I realized it just wanted to wake us up in time for lunch. So a short 20 minutes later a large part of the team was having fun at lunch.

After a nice lunch, I went up to the telescope for calibrations and engineering work. We are preparing to make MagAO-X smart by adding all kinds of AI. The most important one that gave MagAO-X its voice was of course already added by the amazing Dr. Long. And now, it’s time to give it brains for AO. Yesterday we noticed that we were missing the most important ingredient in the kitchen (or at least to me). We were very short on our supply of coke zero (“observing runs are fueled by coke.”). Somehow the observatory staff was able to read our minds and stocked up the kitchen with about 3 gallons of coke zero. You can not imagine how relieved I was when I stepped into the kitchen and saw the picture below.

Our night started off a bit rough with seeing up 1.7 arcseconds. For those that are not astronomers – so much seeing makes me want to give up. But Laird was sayin’ it’s gonna be alright because the start of the night is often rough. And he was right, the seeing started to come down and we actually had an amazing second half of the night. Our observations this night were taking for guest observers from Michigan. We had a great observing guest to keep us motivated and on our feet.

At the end of the night, I stayed up after the rest of the crew went down to sleep. This precious morning time was used to take data to get MagAO-X its brains. Hopefully, I took enough data and we will see in a couple of days if it will actually work! But I stay out too late thanks to these engineering tasks and I got nothing in my brain anymore so I will head off to bed. But just before that I got this music in my mind that I need to share with you all.

Hello all! I am excited to have received the opportunity to write my first ever blog post and we have had a jam-packed Day 4!

Today was the real deal of installing MagAO-X on the platform. We started the morning by splitting into two crews: one to get the instrument on the platform, and the other to get the computer rack on the platform.

Laird and I tackled many of the hardware tasks, which required us to be in some less than comfortable positions.

This photo not only described our mental state after many hours of installing MagAO-X, but also may cause future nightmares. Thank you Katie.

The greatest cabling team ever assembled, flawlessly carried out the cabling operations with little to no mistakes. Shoutout to the girls!

The computer rack loaded up diligently onto the Isuzu and made it up to the Aux safely!

A great picture after a long successful morning of getting both the instrument and computer on the platform. Laird looking photogenic as always.

One would think this is a staged photoshoot for an ad showing off the latest and greatest tool sets. However, it is just a natural Laird picture.

We headed off to lunch after a satisfying morning of work, only to stumble upon unsatisfied reactions to Joseph pulling out a blob of peaches from a mysterious juice.

Despite everything running smoothly for the most part, Jared’s face talking to Joseph said otherwise. I am not sure the context of this conversation, but it had me slightly worried.

MagAO-X installed on the platform!

After working day and night, we achieved a beautiful PSF of Beta Pic @875nm.

After nearing the 24 hour mark of being awake, I started hearing people singing songs they had stuck in their head. One of which was, “Say you can’t sleep, baby, I know”. This is probably because we’ve had so many Espressos today.

All in all, this was truly a great learning experience for me, and the team as whole. We checked off many of the engineering tasks planned during this first night including star acquisition, testing focal plane masks, calibrating the ADCs, and working on PIAA’s. Oh, and don’t think I forgot the fan favorite… Viscachasssss!!!!!!!!

Song of the Day

Well, folks, it’s been a few days but the content you crave is here. That’s right: viscacha photos! Just scroll past all this boring stuff.

Today was a sort of sneak preview of install day. MagAO-X exists as two separate and arguably equally important halves, the electronics rack and the optical table. We eventually need both halves on the platform. However, they must be sundered in two for transport, as they are connected only by a delicate umbilical of electronic cables.

We have started staging the main part of the instrument at the summit in the auxiliary building, which saves a fair bit of time on our install day. This means cables are coming off the day before.

As always, the most delicate part of the operation is the disconnection of the hand-soldered ribbon cables that carry commands to our MEMS deformable mirrors. Eden, Parker, and Katie carried out this fiddly task (along with removing many other, less fiddly, cables).

Once the cables were disconnected and secured, MagAO-X had to be wrapped for transport. I always think it looks like a foil-wrapped burrito.

The burrito had to be lifted off its legs, which we did with the help of the staff here at LCO (and a big honking crane).

The legs are a little adaptive acoustics system of their own, which can remove vibrations transmitted from the ground before they mess up our images. The legs get a separate ride, while the main part of MagAO-X rides up to the telescope on its little cart. Which is in turn on a truck.

I cannot be sure, but I believe the above image was the result of Katie Twitchell imagining a world in which the active leveling system was able to keep the orientation of MagAO-X constant despite going uphill.

Alas, the electronics rack is now lonely. It stays in the cleanroom overnight to be available for last-minute software work before we move it to the summit for installation on the platform.

Fortunately, I was there to keep it company.

Literary Interlude

I have chosen the option to embed a quotation rather than lyrics from the Song of the Day (as per blog rules for 2024B). Many of us spent good chunks of this day in the library at Las Campanas trying to finish other related work in the lulls between major operations.

This quote from “The Library of Babel” seems relevant to exoplanet direct detection in general:

Visiblemente, nadie espera descubrir nada.

A la desaforada esperanza, sucedió, como es natural, una depresión excesiva.

For the obligate Anglophones:

Obviously, nobody expects to discover anything.

Naturally, this inordinate hope was followed by a profound depression.

Jorge Luis Borges is one of the quintessential magical realist writers, and “The Library of Babel” is one of my favorite short stories about … libraries, (in)finity, combinatorics, information theory, and perhaps cosmology? You should go read it (or en Español, si quieras).

Viscachas

The viscachas have been harder to spot this run, but we got a bumper crop today courtesy Laird and Parker, with five confirmed viscacha sightings.

Song of the Day

Today’s song of the day is unrelated.