Atmospheric fluctuations below 0.1 Hz during drift-scan solar diameter measurements
Costantino Sigismondi, Andrea Raponi, Giulia De Rosi, Michele Bianda,, Renzo Ramelli, Massimo Caccia, Matteo Maspero, Loretta Negrini, Xiaofan, Wang
TL;DR
This study analyzes atmospheric fluctuations below 0.1 Hz to assess their impact on drift-scan solar diameter measurements, highlighting the importance of atmospheric stability for accurate solar observations.
Contribution
It provides the first detailed power spectrum analysis of atmospheric seeing fluctuations in the 0.001-1 Hz range for solar diameter monitoring.
Findings
Atmospheric fluctuations significantly affect solar diameter measurements.
Fluctuations below 0.1 Hz are critical for measurement accuracy.
The transits' method's reliability depends on atmospheric stability.
Abstract
Measurements of the power spectrum of the seeing in the range 0.001-1 Hz have been performed in order to understand the criticity of the transits' method for solar diameter monitoring.
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