Two-dimensional speckle spectroscopy of H alpha features


Al N. , Hirzberger J., Kneer F.

ASTRONOMISCHE NACHRICHTEN, cilt.324, ss.364-365, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 324 Konu: 4
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1002/asna.200310129
  • Dergi Adı: ASTRONOMISCHE NACHRICHTEN
  • Sayfa Sayısı: ss.364-365

Özet

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 Halpha..We took narrow-band filtergrams (Deltalambda approximate to 72 mAngstrom) 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.