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 study the Cosmic Microwave Background (CMB) by taking surveys of the sky at microwave wavelengths.  Three generations of cameras have been used with ACT, … Continue reading ACT


CCAT-prime will be a 6-meter cosmology and astrophysics telescope operating at submillimeter to millimeter wavelengths, located at an elevation of 5600 meters (18,400 ft) on Cerro Chajnantor in the Atacama Desert in Chile. CCAT-prime’s optical design is optimized for a wide field of view in order to accommodate next-generation, large-format cameras, and enable large-scale galaxy and molecular … Continue reading CCAT-prime


CMB-S4 is a proposed “Stage-4” ground-based CMB experiment that 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 … Continue reading CMB-S4

Simons Observatory

The Simons Observatory (SO) will be built at an elevation of 5,200 meters in the Atacama Desert in Chile. SO combines existing efforts (namely the POLARBEAR (PB) and Atacama Cosmology Telescope (ACT) collaborations) to build a groundbreaking set of small and large-aperture telescopes to observe the Cosmic Microwave Background (CMB). SO will explore the history … Continue reading Simons Observatory


I’ve had the opportunity to work with many excellent undergraduate and graduate students in Michael Niemack’s lab here at Cornell. Some descriptions of student projects are listed below. For a complete list of mentees, please see my CV. Willow Martin (2019 – 2020) Willow worked on designing and constructing a platform for an FTS to … Continue reading Mentorship