Long Wavelength Spectrometer LWS

The Long Wavelength Spectrometer LWS is one of the four focal plane instruments onboard of ESA's Infrared Space Observatory ISO. It is designed for spectroscopic observations with medium and high resolution in the 43-196.7 micron range.

For more information please see:

ESA's Description of LWS
RAL's Overview of LWS

A comprehensive description of the LWS instrument is given in the ISO LWS Observer's Manual (only available as PostScript version) and the addendum to the LWS Observer's Manual.

LWS Images on the WEB:

Sketch of LWS (33 kB)
LWS Optical Train (150 kB)
ESA's 101 ISO Slides - see for example:
- Slide #48: Sketch of ISO with IR light path
- Slide #25: Focal-plane instruments behind primary mirror
- Slide #43: Optical lay-out of the SWS
- Slide #45: Fabry-Pérot etalon
  (Connect to the high-lighted link above and select the slide.)

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Last update: 13-Mar-1997 by D. Kunze
mailto: isodata@mpe-garching.mpg.de