The Atacama Cosmology Telescope (ACT) is a six-meter telescope located at an altitude of 5190 meters (17,028 ft) on Cerro Toco in the Atacama Desert in Chile. ACT was built to survey the cosmic microwave background (CMB) from 28 to 230 GHz.  Three generations of cameras have been used with ACT, all relying on transition-edge-sensor … Continue reading ACT


The CCAT-prime Project’s wide-field, six-meter aperture Fred Young Submillimeter Telescope (FYST) is currently under construction at 5600 m (18,400 ft) on Cerro Chajnantor in the Chilean Atacama Desert. CCAT-prime will address a suite of science goals, from Big Bang cosmology to star formation and galaxy evolution over cosmic time. I designed and am leading the … Continue reading CCAT-prime


CMB-S4, the next generation “Stage-4” ground-based CMB experiment, will map the cosmic microwave background in multiple frequencies to nearly the cosmic variance limit. CMB-S4 science goals include characterizing dark energy and dark matter, searching for signatures of inflation in the early universe, constraining the sum of the neutrino masses, and mapping the universe’s matter distribution. … Continue reading CMB-S4

Simons Observatory

The Simons Observatory (SO) is building small and large-aperture CMB telescopes at an elevation of 5,200 meters in the Atacama Desert in Chile. SO will explore the history and evolution of our universe, constraining cosmology and investigating open questions in astrophysics. I have collaborated on the development of the SO Large Aperture Telescope Receiver, and … Continue reading Simons Observatory


I’ve had the opportunity to work with many excellent undergraduate and graduate students at multiple institutions. Some descriptions of student projects at Cornell are listed below, last updated in 2020. For a current list of mentees, please see my CV (link). Willow Martin (2019 – 2020) Willow worked on designing and constructing a platform for … Continue reading Mentorship