Title of article
High spatial resolution capabilities of Doppler measurements with the Pic du Midi MSDP spectrograph
Author/Authors
Muller، R. R. نويسنده , , Roudier، Th. نويسنده , , Malherbe، J. M. نويسنده , , Mein، P. نويسنده , , Coutard، C. نويسنده , , Lafon، M. نويسنده , , Grimaud، F. نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-792
From page
793
To page
0
Abstract
We analyse observations in the NaD1 line ( (gamma) 5896 A) obtained with the MSDP spectrograph of the Turret Dome of the Pic du Midi Observatory. Individual images reveal high spatial resolution and the data reduction shows the high capabilities of the spectrograph to get doppler measurements up to the limit of the resolution of the refractor (0 “3). Dopplershifts are obtained in the middle and high photosphere. The smallest granules 0 “4 show upward motions in the middle photosphere.
Keywords
Sun: photosphere , Sun: granulation
Journal title
Astronomy and Astrophysics
Serial Year
2003
Journal title
Astronomy and Astrophysics
Record number
76725
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