Toward 1% Photometry: End‐to‐End Calibration of Astronomical Telescopes and Detectors
Toward 1% Photometry: End‐to‐End Calibration of Astronomical Telescopes and Detectors
We review the systematic uncertainties that have plagued attempts to obtain high precision and high accuracy from ground-based photometric measurements using CCDs. We identify two main challenges in breaking through the 1% precision barrier: (1) fully characterizing atmospheric transmission, along the instrument's line of sight, and (2) properly identifying, measuring, …