(Last update : 07/28/17)

• 1 About CASSIS
  1. 1.1 How the document is organized
  2. 1.2 Starting CASSIS and displaying a spectrum
  3. 1.3 Snapshots
  4. 1.4 Copyright Notice

• 2 Modules
  1. 2.1 Spectrum Manager and ASCII parser
  2. 2.2 Spectrum Analysis
  3. 2.3 LTE+RADEX
  4. 2.4 Loomis Wood
  5. 2.5 Line Analysis
  6. 2.6 Rotational diagram
  7. 2.7 χ² Plot

• 3 Common functionalities
  1. 3.1 Interactive graphical tools
  2. 3.2 Inspect and analyze the spectrum (right-hand side tabs)
  3. 3.3 Advanced fit (right-hand side tabs)

• 4 Databases
  1. 4.1 Configuration
  2. 4.2 Templates
  3. 4.3 Database Creation

• 5 Interoperability
  1. 5.1 SAMP
  2. 5.2 SSAP

• 6 Scripts

• 7 Caveats and tricks

• 8 CASSIS in HIPE

• 9 Video tutorials

About CASSIS

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Contents How the document is organized Starting CASSIS and displaying a spectrum Snapshots Copyright Notice

How the document is organized

This on-line help is divided in eight main sections (left-hand side menu):

• Modules: describes the different viewing and analysis tools available in CASSIS
• Common functionalities: a description of all the basics actions that can be performed in most CASSIS windows
• Databases: explains how to choose a database and how to create and manage templates
• Interoperability: CASSIS in the Virtual Observatory world!
• Scripts: some information about scripting
• Caveats and tricks: a list of encountered problems and how to solve them
• CASSIS in HIPE: some information about the use of CASSIS within the HIPE software (Herschel data)
• Video tutorials

Starting CASSIS and displaying a spectrum

To start CASSIS:

• if you installed the desktop version : from a x-term, go to the cassis directory and type: ./cassis.run xxxx, where xxxx is the size in mega bytes of the memory you want to allow to CASSIS (e.g., 1024, 2048, etc). Just typing ./cassis.run, CASSIS will use by default 1 Gb of memory.
  Warning : at the first launch, CASSIS may take a few minutes to setup.
• if you chose the online version, just click on this link: http://cassis.irap.omp.eu/online/cassis.jnlp

When launched CASSIS opens its main window:

or

where yyyy is SQLITE or VAMDC (see the section 4 for more details).

You can then start using CASSIS. For example, to display the CO spectrum which comes with CASSIS, follow these steps:

• open the Spectrum Manager (Modules > Spectrum Manager or click on the icon )
• click on "Open local resource"
• by default, you should be in CASSIS folder > delivery > data (if not go to this directory)
• select "CO.bas"
• click on "Display spectrum"

You can also load data via one of the views or modules described in Section 3.

For a quick access to the modules and to some utilities, you can use the icons:

Icon	Equivalent in menu bar	Description	More info
	File → Open	Opens a window to browse for a data file ; CASSIS will open the file with the spectrum manager for inspection before display.
	Modules → Spectrum Manager	Opens the Spectrum Manager	§ 2.1
	File → Save	To save the displayed spectrum/spectra in one of the following formats: pdf, png, votable, fits, fus (full spectrum only), lis (line spectrum only), rot (rotational diagram only).
	File → Print	To send the current plot to a printer. Warning: currently does not work under Mac OS 10.9 and from the Line Spectrum tab (all OS)
	Modules → Spectrum Analysis	Opens the Spectrum Analysis window.	§ 2.2
	Modules → LTE+RADEX	Opens the LTE+RADEX Analysis window.	§ 2.3
	Modules → Loomis Wood	Opens the Loomis Wood Analysis window	§ 2.4
	Modules → Line Analysis	Opens the Line Analysis window	§ 2.5
	Modules → Rotational Diagram	Opens the Rotational Diagram window	§ 2.6
	Modules → Chi2Plot	Opens the χ2 plotting tool	§ 2.7
	Templates → Manage Templates	Opens the database template manager	§ 4.2
	Scripts → Jython	Opens the jython scripting window	§ 6

Snapshots

Copyright Notice

If you use CASSIS to publish some results, please do not forget to cite the following :

• If you used only the LTE model:
  "Based on an analysis carried out with the CASSIS software and the XXX spectroscopic databases. CASSIS has been developed by IRAP-UPS/CNRS (http://cassis.irap.omp.eu)."
  where XXX should be replaced by the following database(s), depending which one(s) you used :
  • JPL database : http://spec.jpl.nasa.gov/
  • CDMS database : http://www.ph1.uni-koeln.de/cdms/
  • NIST database : http://physics.nist.gov/PhysRefData/ASD/


• If you used the RADEX model:
  "Based on analysis carried out with the CASSIS software, the XXX spectroscopic databases, the LAMDA molecular databases, and the RADEX code. CASSIS has been developed by IRAP-UPS/CNRS (http://cassis.irap.omp.eu)."
  where XXX is as above, and references for LAMDA and RADEX are:
  • LAMDA database : http://www.strw.leidenuniv.nl/~moldata/
  • RADEX model : http://www.strw.leidenuniv.nl/~moldata/radex.html

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