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Anomalous Line Shifts on the SOHO/CDS NIS Detector

Published online by Cambridge University Press:  13 May 2016

S. V. H. Haugan
S. V. H. Haugan*
Affiliation:
ESA Space Science Department, Goddard Space Flight Center, Mail Code 682.3, Bldg. 26 Room G-1, Greenbelt, Maryland 20771, USA

Abstract

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Observations with the SORO/CDS NIS detector prior to the recovery of SOHO showed strong correlations between line shifts and local intensity gradients along the slit, probably caused by an elliptical, tilted point spread function. This must be taken into account when interpreting NIS observations with strong intensity gradients. An initial analysis of post-recovery data does not display the same pattern, indicating that this particular problem was eliminated by changes in the optics during SOHO's “vacation”.

Type
Session IV: Structure and Dynamics of the Transiton Region and Corona
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 396 - 400
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

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