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Solar observation facilities

Supervisors: D. Spadaro, F. Zuccarello
Technical staff: E. Catinoto, P. Costa, and S. Sciuto


Equatorial spar. The equatorial spar (see Fig. 3.3) consists of 6 optical benches, three of which are devoted to the daily observing program:

Figure 3.3: The equatorial spar.
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The data acquired in the framework of this program deal with: groups of sunspots, faculae, quiescent and active prominences on the disk and at the limb, flares (see Fig. 3.4).

The standard sequence of observations consists of:

Figure 3.4: An H$\alpha$ a image of the Sun taken with the Zeiss filter.
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Catania Observatory makes available solar observations also through its web site. It shows links to several international research projects and collaborations to which it actively contributes.

Since 2002, Catania Astrophysical Observatory is one of the stations of the Global High-Resolution H$\alpha$ Network, which collects and records chromospheric data obtained by several international observatories. This network, which includes also the facilities of the Big Bear Solar Observatory (California, USA), the Kanzelhöhe Solar Observatory (KSO) in Austria, the Huairou Solar Observing Station (HSOS) and the Yunnan Astronomical Observatory (YNAO) in China, allows to monitor continuously activity phenomena occurring in the solar chromosphere, enabling to follow with high accuracy the evolution of active regions and to enhance our knowledge of such phenomena. The aim is to use statistically analysis to solve the question related to the flares prediction.

Solar observations carried out in Catania also support the activities of the French-Italian solar telescope THEMIS (Tenerife, Canary Islands). H$\alpha$ full disc images hourly collected are put on the web page of Catania Observatory, in order to help in the selection of solar regions to observe by THEMIS (whose instantaneous field of view is smaller than 1 arcmin $\times$ 1 arcmin), also taking into account the longitude difference between Canary Islands and Catania.


next up previous contents index
Next: The "Mario G. Fracastoro" Up: Facilities and Services Previous: Opto-mechanical laboratory   Contents   Index
Innocenza Busa' 2005-11-14