Gravity Group Seminar | Javier Romualdez, Steven Benton, and Steven Li (Princeton University), "An Introduction to SuperBIT & GigaBIT: The Ups and Downs of Balloon-borne Optical Astrophysics"

The Super-pressure Balloon-borne Imaging Telescope (SuperBIT) is the first-of-its-kind, three-axis stabilized, high-resolution, wide-field imager designed to provide weak lensing measurements in near-UV to near-IR bands (300–1000 nm). Operating in near-space from the stratospheric balloon-borne environment, SuperBIT's 0.5-m telescope has demonstrated diffraction-limited imaging over its 0.5-degree field of view. SuperBIT's successor, the Giga-pixel BIT (GigaBIT), is being designed with an upgraded camera and 1.3-m primary mirror. We report on SuperBIT performance from the most recent 2019 test-flight, preparations for SuperBIT's science flight in 2022 from Wanaka, NZ, and current design progress for the GigaBIT instrument.