Solar Rotation Measurements at Mount-Wilson - Part One - Analysis and Instrumental Effects
Abstract
We examine the background velocity fields of the Sun as observed at Mount Wilson. The method of velocity reduction of the full-disk Mount Wilson data is outlined. We describe a number of tests that have been carried out in order to find an instrumental origin for short-term rotation variations and a large-scale background line-shift - the ears. No instrumental cause can be found for this ear effect, although such a cause cannot yet be ruled out.
- Publication:
-
Solar Physics
- Pub Date:
- May 1980
- DOI:
- Bibcode:
- 1980SoPh...66..167H
- Keywords:
-
- Magnetic Measurement;
- Red Shift;
- Solar Magnetic Field;
- Solar Rotation;
- Velocity Distribution;
- Doppler Effect;
- Least Squares Method;
- Nonlinearity;
- Solar Limb;
- Astronomy;
- Velocity Field;
- Solar Rotation;
- Rotation Measurement;
- Rotation Variation;
- Velocity Reduction