US ISO Science Support Center

Long Wavelength Spectrometer


The LWS, on board of ISO, was used to collect spectra between 45 and 200 microns both at low (R~200) and high (R~10000) spectral resolution.

If you plan to work with LWS data, here is a checklist for you:

Get tools to


Browse the documentation available below to know more about the LWS. A lot of new information about the instrument calibration is constantly put on-line !



- Documentation

- Data Reduction & Analysis Tools
  • ISAP : The ISO Spectral Analysis Package - Visualize your data, zap outliers, average, fit lines and blackbodies....and a lot more!
  • LWS data reduction recipes - What to worry for and what not during LWS data reduction. Hints, tricks & tips.


- FAQs: Based on questions received from the U.S. and the International community

  • LWS faqs - questions regarding the instrument, its observing modes and the data.
  • LIA faqs - questions regarding the data, their reduction and analysis.
  • Topics of historical interest.


- Related Useful Links


HowTo Get Help: If you have questions or need help on your LWS observations or data, please contact IPAC ISO helpdesk at: iso@ipac.caltech.edu in the US, or helpdesk@iso.esac.esa.int in Europe

Last update: 7 October 1999.


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