How ALMA is calibrated: I Antenna-based pointing, focus and amplitude calibration
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🌌 astro-ph.IM
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calibrationantennaalmaamplitudepointingsingleaffectantenna-based
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Here we will discuss which calibrations are needed, how to perform them and how the calibration affect ALMA observations. This first part concentrates on aspects related to a single antenna, namely antenna pointing (including the antenna metrology), focusing, and the amplitude calibration, we also mention the bandpass calibration for single measurements.
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