Issue |
Astron. Astrophys. Suppl. Ser.
Volume 128, Number 3, March II 1998
|
|
---|---|---|
Page(s) | 589 - 598 | |
DOI | https://doi.org/10.1051/aas:1998166 | |
Published online | 15 March 1998 |
The Italian Panoramic Monochromator
Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy
Send offprint request to: F. Cavallini
Received:
17
June
1997
Accepted:
29
July
1997
A new instrument for solar
bidimensional spectroscopy,
the Italian Panoramic Monochromator (IPM), has been recently
installed on the Télescope Heliographique pour l'Étude du
Magnétisme et des Instabilités de l'atmosphère Solaire
(THEMIS), the French-Italian solar telescope built
in Tenerife (Canary Islands).
On a square field , this instrument allows one
to obtain monochromatic images of the solar surface
with high spectral resolution (
256 000 at 5500 Å),
preserving all the spatial resolution delivered by the
telescope (
).
The wavelength stability of the instrumental profile is very
high, the maximum drift in 10 hours amounting to about 10 ms-1.
Key words: instrumentation: interferometers / instrumentation: spectrographs / Sun: photosphere / Sun: chromosphere
© European Southern Observatory (ESO), 1998