Pointing Calibration of GroundBIRD Telescope Using Moon Observation Data

Understanding telescope pointing (i.e. line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon is a candidate astronomical source for pointing calibration. Although the visible size of the Moon (30^`) is larger than that of the planets, we can frequently observe the Moon...

GroundBIRD: Observation of CMB Polarization with a Rapid Scanning and MKIDs

Cosmic microwave background (CMB) radiation is an afterglow from the Big Bang. CMB contains rich information about the early stage of the universe. In particular, odd-parity patterns (B-mode) in the CMB polarization on a large angular scale would provide an evidence of the cosmic inflation. The aim of the GroundBIRD experiment is to observe...