Radio telescope aims to explore Milky Way
The dish in question — a radio telescope managed by the physics department — received a number of upgrades through a student’s summer research opportunity. The most observable being its new paint job, courtesy of physics major and energy and society minor Benjamin Ramsey, ’22.
“It now is painted like a flower, a cosmos flower to be exact,” Ramsey said. “It’s a bit of a play on words. … It’s representative of the greater cosmos that we’re studying with the telescope.”
Ramsey, who plans to use data collected from the telescope as part of his senior comprehensive project, explained that the radio telescope itself receives information from across our universe in the form of a specific frequency of radio waves.
“That telescope specifically records 21 centimeter neutral hydrogen emission,” Ramsey said. “Basically, a bunch of clouds in our universe are constantly emitting radio waves, and the radio telescope gathers those radio waves and receives them and then spits out data for me to look at.”
Professor of Physics Daniel Willey, the faculty manager of the radio telescope, made clear that while the radio telescope does not operate the same as a normal telescope, in some instances it is more effective.
“(The Milky Way) is actually just made up of mostly gases with some dust particles included,” Willey said. “So when you want to look far into our galaxy, the problem is that a lot of light can’t get through all that dust and some of the gas as well. … If you want to see to that distance, you can’t see it optically because the light doesn’t get there, but the radio waves from this hydrogen do get here.”
Willey explained that it is possible to create a map of the galaxy by plotting points received by the radio telescope — an almost impossible feat through any other observational method.
“We’re stuck inside the galaxy,” Willey said. “We can’t go outside the galaxy and take a picture. It’s just way too far. You’d have to be hundreds of millions of light-years away to be able to look at this, and we’ve never sent anything close to that far. It’s hard to see what we’re in because we don’t have the perspective.”
According to Ramsey, the radio telescope has been an ongoing project for senior comps; something that has “always been sort-of functional, but never fully functional.”
“A lot of the comps on the radio telescope have been fixing it and making it ready for the next team to use it,” Ramsey said. “That’s not to tear down anyone’s work. I think everyone who’s worked on the radio telescope has done really good work, but (it) allows us to do observational astronomy. It’s really the only research that’s going on at Allegheny that is observational astronomy.”
Willey remarked that Ramsey’s summer work earned him renown within the physics department.
“I don’t think anybody has worked on this over the summer, which is good because oftentimes what happens is the students do the senior project (on the telescope), and by the time they’re ready to take data, time’s up,” Willey said. “So hopefully (Ramsey got) a head start by working over the summer.”
While the telescope has been worked on as recently as spring 2021 by then-senior Austin Shaw, Willey cited its troubled past as part of the reason for its constant need for work.
“That dish … used to be on top of Murray Hall,” Willey said. “Maybe they were getting T.V. from it. I don’t know.”
Willey explained that once it was reconfigured as a radio telescope, the dish sat on top of Carr Hall, as more exposed sky produces better results.
“The last time they renovated Carr Hall, when they moved the environmental science department in, we had to take it all down,” Willey said. “And after that, they said, ‘well, we don’t want people on the roof anymore.’ So we had to pick a place and (its current spot) was the place.”
According to Willey, the telescope currently still needs work on the motors that allow it to move up and down — at full functionality, it is capable of moving in all directions — and changes to wiring configurations, but otherwise Ramsey will soon be ready to begin data collection.
Ramsey hopes the opportunity to collect data from the radio telescope will help propel him forward post graduation.
“I want to go to grad school,” Ramsey said. “And I think this project opened my eyes to radio astronomy, and really observational astronomy in general. I always dreamed of being a theoretical physicist and dealing with general relativity, but … really this comp has opened up my perception to the idea that maybe I want to pursue observational astronomy as a potential career path.”
Willey acknowledged the hard work Ramsey put into the project, but still made clear he had his contributions.
“You can give him all the credit, but I did suggest (painting the telescope as a cosmos flower),” Willey said.
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