CFHT, Instruments, Spectroscopy, ESPaDOnS

ESPaDOnS: an Echelle SpectroPolarimetric Device
for the Observation of Stars at CFHT

CFHT tools: SuperMongo macros and automatic real time data reduction

CFHT provides a tool to ESPaDOnS users: SuperMongo macros to plot the ASCII spectra produced by Libre-ESpRIT. The SM macros may be copied on your computer(s) for your own personal use later on.

SuperMongo macros to plot spectra

A file named (or something similar) has been copied in your observer account directory SM. This file contains various macros, which are flexible enough to:

To start SuperMongo, simply type: sm. To load the file with the SuperMongo macros prepared to plot ESPaDOnS data, type load2 A list of available macros will appear. Once the file is loaded, you can get that list again by typing helpme. You may type !pwd to see in which directory you are, cd to change directory, and ls to see the files in the current directory.

Macros generally come in 3 flavors: only data points are plotted, data points are plotted and connected to each other, data points are plotted with the error bars (see examples above).

For data obtained in the spectroscopic mode 'star only', the macros are called spectra (plots data points), spectraconn (plots and connects data points), spectrabar (plots data points with error bars).

For data obtained in the spectroscopic mode 'star + sky', the macros are called star (star spectra, sky subtracted), starsky (star with sky spectra), sky (sky spectra).

For data obtained in the polarimetric mode, a set of macros plots the intensity I (the 2d column in the reduced spectra files), another one plots the polarization (the Stokes parameter measured, in the 3rd column), and a last series plots the check spectra (4th and 5th columns, to check for spurious, artificial, polarization signals).

To save a plot in a PostScript file, you have to first "open" the PostScript device, run the macro, then close the device by re-opening the screen device:
device postfile
device x11
You may then print the PS file at the summit with a command like lpr -Psps

Your Support Astronomer will show you how to use them.

Back to ESPaDOnS's page
This CFHT Web page is maintained by Nadine Manset (manset -=AT=-