LWS Instrument Page

Last Update: 19 July 2005

ISO | CAM | LWS | PHT | SWS

We recommend the ISO Handbook, Volume III: LWS - The Long-Wavelength Spectrometer as a general reference point. Latest updates and further details on calibration can also be found in technical notes and publications available below.

Highly Processed Data Products (HPDP)

Some observations taken in specific observing modes have been fully reprocessed in a systematic way by experts after the release of the last Off-Line Processing pipeline (v10) released in 2003 and are now made available as 'Highly Processed Data Products' through the ISO Data Archive interface.

The following reprocessed data sets are available containing LWS observations made with ISO and are recommended for scientific usage:

Uniformly reprocessed LWS01 spectra, December 2003, C. Lloyd et al.

Basic LWS Information

ISO Handbook, Volume III: LWS - The Long-Wavelength Spectrometer, Version 2.1 (17/Nov/2003)
Version 10.1 of the ISO Off-Line Processing (OLP) software released (20/Nov/2001)
LWS OLP10 Scientific Validation Report (05/Apr/2001)
The ISO Long-Wavelength Spectrometer, Clegg P.E. et al., A&A, 315, L38-L42 (1996).

Data Analysis

2 packages are available for further analysis

The LWS Interactive Analysis (LIA) to inspect, reprocess and recalibrate LWS data
ISO Spectroscopic Analysis Package (ISAP) to work with the fully processed spectra

Some useful recipes have been written to guide the user and help him decide what data reduction steps are required for his particular data.
- Data Reduction & Analysis Recipes for LWS

Calibration

Different aspects of the LWS calibration, which may be of relevance to future space missions are addressed in detail in the following papers:

"Pre-flight Calibration of the LWS" - T. Lim & B. Swinyard
"The LWS Calibration Strategy" - T. Lim et al.
"The LWS Relative Spectral Response Function" - T. Lim & B. Swinyard
"Empirical Aspects of the LWS Photometric Calibration" - S. Sidher et al.
"The Calibration of the LWS Parallel and Serendipity Modes" - T. Lim & F. Vivares
"Wavelength Calibration and Instrumental Profiles of the ISO-LWS Grating" - C. Gry et al.
"The ISO LWS Beam Profile" - C. Lloyd

Additional LWS Documents

These additional LWS documents describe aspects of the instrument in some detail and only need to be read for a deep understanding of a particular aspect. But be aware that the reports sometimes reflect "work in progress" and may have been superseded.