2-DIMENSIONAL, HIGH-SPATIAL-RESOLUTION, SOLAR SPECTROSCOPY USING A CORRELATION TRACKER .2. MAPS OF SPECTRAL QUANTITIES

Citation
M. Collados et al., 2-DIMENSIONAL, HIGH-SPATIAL-RESOLUTION, SOLAR SPECTROSCOPY USING A CORRELATION TRACKER .2. MAPS OF SPECTRAL QUANTITIES, Astronomy & Astrophysics. Supplement series, 115(2), 1996, pp. 367-377
Citations number
19
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
115
Issue
2
Year of publication
1996
Pages
367 - 377
Database
ISI
SICI code
0365-0138(1996)115:2<367:2HSSUA>2.0.ZU;2-Z
Abstract
In this paper we illustrate some of the capabilities of the Correlatio n Tracker prototype developed at the Institute de Astrofisica de Canar ias used for two-dimensional, high spatial resolution, solar spectrosc opy. Slit spectra have been taken, using the Correlation Tracker as a; stabilizer (minimizing image motion during exposures) and as an accura te positioning device (allowing to precisely locate the entrance slit of the spectrograph at adjacent positions on the solar disc). Spectral information is obtained from several solar regions of different sizes . Granules (including some exploding ones) and intergranules are clear ly resolved. Several sub-arcsecond structures are undoubtedly distingu ished as well. The two-dimensional variation of several spectral quant ities in the solar atmosphere is shown, demonstrating the power of thi s technique and its future possibilities.