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Two-dimensional speckle spectroscopy of Hα features

✍ Scribed by N. Al; J. Hirzberger; F. Kneer

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
254 KB
Volume
324
Category
Article
ISSN
0004-6337

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✦ Synopsis

Abstract

In May 2002, the solar chromosphere was observed with a two‐dimensional spectrometer which is mounted in the German Vacuum Tower Telescope (VTT) at the Observatorio del Teide/Tenerife. The aim of this observation was to investigate the fine structure of the solar chromosphere seen in H__α__. We took narrow‐band filtergrams (Δ__λ__ ≈ 72 mÅ) by scanning through this line. Broad‐band images taken strictly simultaneously with the narrow‐band filtergrams were restored by speckle methods. The instantaneous optical transfer function from this restoration procedure was used for the reconstruction of the narrow‐band images. Some results of this high spatial resolution observation are presented below.

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