Bibcode
Verma, M.; Denker, C.; Balthasar, H.; Kuckein, C.; González Manrique, S. J.; Sobotka, M.; Bello González, N.; Hoch, S.; Diercke, A.; Kummerow, P.; Berkefeld, T.; Collados, M.; Feller, A.; Hofmann, A.; Kneer, F.; Lagg, A.; Löhner-Böttcher, J.; Nicklas, H.; Pastor Yabar, A.; Schlichenmaier, R.; Schmidt, D.; Schmidt, W.; Schubert, M.; Sigwarth, M.; Solanki, S. K.; Soltau, D.; Staude, J.; Strassmeier, K.; Volkmer, R.; von der Lühe, O.; Waldmann, T.
Bibliographical reference
Coimbra Solar Physics Meeting: Ground-based Solar Observations in the Space Instrumentation Era Proceedings of a Meeting held at the University of Coimbra, Coimbra, Portugal In 5-9 October 2015. Edited by Ivan Dorotovic, Catherine E. Fischer, and Manuela Temmer. ASP Conference Series, Vol. 504. San Francisco: Astronomical Society of the Pacific, 2016, p.29
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4
2016
Citations
0
Refereed citations
0
Description
Accurate measurements of magnetic and velocity fields in and around
solar active regions are key to unlocking the mysteries of the formation
and the decay of sunspots. High spatial resolution images and spectral
sequences with a high cadence obtained with the GREGOR solar telescope
give us an opportunity to scrutinize 3-D flow fields with local
correlation tracking and imaging spectroscopy. We present GREGOR early
science data acquired in 2014 July - August with the GREGOR
Fabry-Pérot Interferometer and the Blue Imaging Channel.
Time-series of blue continuum (λ 450.6 nm) images of the small
active region NOAA 12118 were restored with the speckle masking
technique to derive horizontal proper motions and to track the evolution
of morphological changes. In addition, high-resolution observations are
discussed in the context of synoptic data from the Solar Dynamics
Observatory.