Low frequency seeing and solar diameter measurements

Details Low frequency seeing and solar diameter measurements Low frequency seeing and solar diameter measurements

2012-01-31

arxiv.org/abs/1201.6463v2

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

6 pages, 4 figures, Proceedings of the Third Galileo - Xu Guangqi meeting, October 11-15, 2011 National Astronomical Observato

Scientific paper

The action of the atmospheric seeing is blurring, image stretching and image
motion. This happens even to the image of the Sun which is more than half
degree wide. Low frequency seeing components affect the solar diameter values
measured either throught the drift-scan or the heliometer methods. We present
evidences of image motion and stretching down to 0.001 Hz.

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