Optimisation of solar synoptic observations

0386956 - ASÚ 2013 RIV US eng C - Conference Paper (international conference)
Klvaňa, Miroslav - Sobotka, Michal - Švanda, Michal
Optimisation of solar synoptic observations.
Observatory Operations: Strategies, Processes, and Systems /4./. Bellingham: International Society for Optical Engineering, 2012 - (Peck, A.), 8448A/1-8448A/7. Proceedings of SPIE, 8448. ISBN 9780819491497. ISSN 0277-786X.
[Observatory Operations: Strategies, Processes, and Systems /4./. Amsterdam (NL), 04.07.2012-06.07.2012]
Institutional support: RVO:67985815
Keywords : solar images * optimisation of archiving
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We describe a method of optimised archiving of solar images, based on the selection of images that contain a new information. The new information content is evaluated by means of the analysis of changes detected in the images. We present characteristics of different kinds of image changes and divide them into fictitious changes with a disturbing effect and real changes that provide a new information. In block diagrams describing the selection and archiving, we demonstrate the influence of clouds, the recording of images during an active event on the Sun, including a period before the event onset, and the archiving of long-term history of solar activity. The described optimisation technique is not suitable for helioseismology, because it does not conserve the uniform time step in the archived sequence and removes the information about solar oscillations. In case of long-term synoptic observations, the optimised archiving can save a large amount of storage capacities. The actual capacity saving will depend on the setting of the change-detection sensitivity and on the capability to exclude the fictitious changes.
Permanent Link: http://hdl.handle.net/11104/0216238