Bill Dent says goodbye to ALMA: “I came for 3 years and stayed for 15”

Sep 27, 2024 | News | 3 comments

Tags: ALMA

It was early morning in the control room at OSF. Bill Dent was alone with an operator and typing away when the information on his screen began to slow to a complete stop. Unable to communicate with the antennas, they called the engineers to no success. “We had no contact, so we called management and IT, and that’s when everything went very quiet. That’s when they realized we were being hacked,” he recalls.

It was the cyberattack suffered on Saturday, October 29, 2022, and Bill Dent, our System Astronomer, was a first-row witness to this unforgettable event for the observatory, one of several milestones in which he has been present.

After more than 15 years at ALMA, Bill is retiring, giving way to a new stage in his life that he takes with his own humor: “It’s a bit shocking, but you know, it’s possible, other people have done it”, he says with a smile.

From the same office where he’s worked for more than a decade, Bill recalls that he originally only came for three years: “That’s what I told my wife. So yeah, my kids basically grew up here. They went to school here and spent most of their lives in Chile. I came for three years and stayed for 15.”

He was persuaded by Richard Hills, who left his position as a professor of radio astronomy at Cambridge to take over as ALMA Project Scientist. “I was like, ‘Go to Chile? I don’t speak any of the language. But if he gave that up and went to Chile, why can’t I? So yeah, ALMA was an adventure.”

The adventures soon followed. Only a year after arriving in Chile from Scotland, he would experience the 2010 earthquake.

Two antennas in the early days of ALMA
Bill remembers the early years of the observatory, when there were only two antennas and reaching four was big news. He would go up to the OSF every month to work shifts of up to 14 hours in a control room with 12 other colleagues and 2 operators, suffering the software failures that forced them to reset the system up to ten times in one night: “It was like fighting fire all the time,” he says.
Protagonist of the story
Major ALMA finds have passed through Bill’s eyes: he collaborated on our first official image and in 2014 he was the first person to discover gas in a disk.

“I remember going to the director’s office, and there was someone else producing early bits of data. The first ring was starting to appear in the noise, and I was like, ‘it can’t be real’. And then we got a bit more data, and it’s getting deeper and deeper, and you can see it’s coming out. That was really cool, really exciting,” Bill recounts, as he recalls the unveiling of the HL Tau image in 2014.

He also recalls the excitement of watching his colleagues obtain the first image of a black hole in 2019.

The language of science
Between data and findings, Bill watched the observatory grow, going through as many challenges as a pandemic that paralyzed the world. “I don’t think I’m still really sure it really happened,” he says with a laugh.
But the time has come for him to retire. Back in Scotland, he plans to make his house an eco-friendly home, take up his hobby of ham radio and continue doing astronomical research with the data he still has and didn’t get around to writing down.

Before leaving, he describes his years of adventure at ALMA with his characteristic humor: “If you only have one opportunity to do something and you don’t take it, you miss it. So it’s been great, even though my language skills are crap. It’s amazing how far you can go without mastering the language. People are pretty tolerant if you at least try, right?”.

Click on the image below to reminisce about Bill Dent’s years at ALMA.
We thank Chin-Shin Chang, Sergio Martin, Yoshiharu Asaki, Laura Gómez and Hugo Messias for the photos.
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3 Comments

  1. Sergio

    Amazing scientist and person. ALMA is forever grateful to Bill.

    Reply
  2. Sean

    Bill – our professional lives have been intertwined for 34 years. long will our friendship continue. Thanks for all that you have contributed to ALMA’s success, and sharing your expertise with all of us.

    Reply

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