Low Noise Spectrometer For The Daily Measurement Of Solar Chromospheric Flux
- 16 November 1982
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 249-251
- https://doi.org/10.1117/12.933462
Abstract
A "sun as a star" spectrometer is described which measures the variability of the core of Ca II 3933Å relative to the nearby continuum at 3953Å. The system is capable of 0.001% photometry but differential atmospheric extinction over the 20Å bandpass limits detectivity to 0.02%.Keywords
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