Instructions for Visiting Astronomers

Informations about Visitor Mode Observation Runs

SINFONI has been offered since period 75. You will find all required information about visitor mode observations runs on the pages of the Paranal Science Operations team:

Data Cookbook for Visiting Astronomers

Where to find the data?

Visiting astronomers will work with the astuser4 account on wgsoff4. The data is sorted into directories named by the date with the data taken from 12:00 to 11:59 UT, e.g.:



The science and calibration data of SINFONI are automatically reduced by the pipeline, but the science data is processed with old calibration files and therefore is not science-grade, and is intended for quick-look only. Pipeline-reduced data will not be available in the ESO data archive; the user is welcome to copy them to their computers during or immediately after the observations.

How to get an overview of the data with gasgano?

The gasgano browser can be used to associate the files with the respective observation blocks. Gasgano displays some important fits header keywords together with the file names. The data can be sorted by directories or by OBs:

gasgano ~astro4/gasgano.prefs.SINFONI        (to start it from wgsoff4 with SINFONI preferences)

in gasgano:

   File -> Add/Remove Files... -> Add File

      Up One Level                           (search the symbols with the mini-help text) 



      Up One Level



Once you select a OB with the left mouse button you will get the files taken with the OB and the important fits keywords displayed. If you highlight a file and press the External View button (upper left on gasgano) then the file will be displayed in a skycat tool. This is only possible for 2D images but not for image cubes! Gasgano can be also used to select files to be copied or moved to other directories.

How to find informations about the data reduction pipeline?

The pipeline reduction and the respective output files of the pipeline are described on the pages of the Quality Control Group. There are for the science data reduction 3 important types of output files. The type of output file is described in keyword PRO.CATG:

PRO.CATG = OBS_OBJ         sky subtracted image cubes of single exposures   (image cube)

         = COADD_OBJ       co-added image cube of all files taken in an OB  (image cube)

         = MED_COADD_OBJ   median over all wavelengths of COADD_OBJ         (image)

How to display image cubes with QFitsView?

QFitsView provides many options to display and manipulate image cubes interactively. It can be started from the wgsoff4 with typing QFitsView (optionally with the file name of the image cube).

in QFitsView

   File -> Open                             (select file)

try for example:

   OPTIONS -> CUBE DISPLAY -> LINE MAP      (select wavelength)

Try also to toggle the Auto Scale button on the bottom to select the cuts of the plot interactively.

The look up table can be manipulated with the left mouse button moved over the field of view. The zoom and other options should be easy to find.