1. Recent observations of the solar corona with a new ground-based Coronagraph in Argentina (MICA)
- Author
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M. G. Rovira, Rainer Schwenn, G. Stenborg, B. Podlipnik, C. Francile, Bernd Inhester, and Nandita Srivastava
- Subjects
Physics ,law ,Coronal mass ejection ,Astronomy ,Solar radius ,Mica ,Emission spectrum ,Coronagraph ,Corona ,Solar telescope ,law.invention - Abstract
As part of the new German-Argentinian Solar-Observatory in El Leoncito, San Juan, Argentina, a new ground-based solar telescope (MICA: Mirror Coronagraph for Argentina) began to operate in August 1997. MICA is an advanced mirror coronagraph, its design being an almost exact copy of the LASCO-C1 instrument. Since its installation, it has been imaging the inner solar corona (1.05 to 2.0 solar radii) in two spectral ranges, corresponding to the emission lines of the Fe XIV and Fe X ions. The instrument can image the corona as fast as every minute. Thus, it is ideally suited to study fast processes in the inner corona. In this way it is a good complement for the LASCO-C1 instrument. We present a brief review of the characteristics of the instrument, and some recent observations.
- Published
- 1999
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