Auxiliary Data

Auxiliary data include catalogues with comparison lines and tables with the fluxes of some standard stars.

The area MID_ARC contains the following calibration catalogues, thar.tbl, Thorium-Argon catalogue (for CASPEC, ECHELLEC, EMMI). hear.tbl, Helium-Argon catalogue (for EFOSC). as well as Th-Ar tables selected for blends at spectral resolutions 25000, 33000, 50000, 100000, respectively named thar25.tbl, thar50.tbl, thar50.tbl, thar100.tbl (these tables have been prepared by H.Hensberge, M.David and W.Verschueren from Antwerp University).

Standard stars for flux calibration are available in the area MID_STANDARD. Additional tables of southern spectrophotometric standards are available in /midas/calib/data/spec/ctio (Hamuy & al., 1992, PASP, 104 533-552 and Hamuy & al., 1994, PASP 106 566-589) and midas/calib/data/datatrans/hststd (HST Standards).

These tables are distributed on request in complement to the Midas releases. These tables are also available on anonymous ftp at the host ftphost.hq.eso.org (IP number 134.171.40.2). The files to be retrieved are located in the directory /midaspub/calib and are named README.calib and calib.tar.Z. Command SHOW/TABLE can be used to visualize the column name and physical units of the tables. Demonstration data required to execute the tutorial procedure TUTORIAL/ECHELLE are also located on this ftp server in the directory /midaspub/demo as echelle.tar.Z. FTP access is also provided on the World Wide Web URL:
http://http.hq.eso.org/midas-info/midas.html

The calibration directory contains other information such as characteristic curves for ESO filters and CCD detectors, which can be visualized with the Graphical User Interface XFilter (command CREATE/GUI FILTER).