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The SOFIN Echelle spectrograph

SOFIN at Cassegrain, with Piskunov's Loral which was commissioned 01/2002 (foto R. Rekola)

SOFIN was originally a joint project of Crimean and Helsinki Observatories.

SOFIN is a high-resolution Echelle spectrograph provides a resolution of R=27000-170000. SOFIN also offers spectropolarimetry.

As of period 57, SOFIN is only offered to do circular spectro-polarimetry with the medium-resolution (R~80,000) camera.

SOFIN is not a common-user instrument, but is only supported during fixed periods by Dr. Ilya Ilyin (, AIP, Potsdam and/or Dr. Jyri Lehtinen (, MPS, Göttingen. Before applying, prospective users should obtain explicit approval for the use of SOFIN from Dr. Thomas Hackman (, from the University of Helsinki, and Dr. Maarit Käpylä (, from the Max Planck Institute in Göttingen.

SOFIN efficiency

Some examples of SOFIN spectra

Back to top Last modified: June 14 2023