The SOFIN Echelle spectrograph

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

SOFIN was originally a joint project of Crimean and Helsinki Observatories.
SOFIN is not a common-user instrument, but is only supported during fixed periods by Dr. Ilya Ilyin, AIP, Potsdam. Prospective users should obtain explicit approval for the use of SOFIN from Dr. Ilyin (ilyin@aip.de) and Prof. Ilkka Tuominen (Ilkka.Tuominen@helsinki.fi) before applying.

• The new concise SOFIN Observing Manual - gzip Postscript
• The SOFIN User's Manual - gzip Postscript
• SOFIN 3A Reference Guide - gzip Postscript
• SOFIN 3A User's Guide - gzip Postscript
• See also Ilya Ilyin's SOFIN Homepage which contains more information.

SOFIN efficiency

• Loral
  
• EEV7
  

Some examples of SOFIN spectra

• II Peg image - 2nd camera, pre-processed image.
  
• Lamp image - 2nd camera, raw data image.
  
• RY Tau image - 3rd camera, prior to optimal extraction of spectra.