Using the ISO Data Archive
The European Space Agency's ISO Data Archive contains over 30,000 scientific observations and an additional 62,000 parallel and serendipity observations.
Below we give step by step instructions on how to access the Archive.
You may also wish to look at ESA's Guided Tour of the ISO Data Archive. Four
instruments were aboard the ISO satellite. They were:
- CAM: IR Camera and CVF, 2.5-17 microns
- LWS: Far-IR Spectrometer, 43-197 microns
- SWS: Mid-IR Spectrometer, 2.4-45 microns
- PHT: Imaging Photo-Polarimeter and Spectrometer, 2.5-240 microns
To start the ISO Data Archive, visit the Archive Interface.
You may view an 2-page illustrated guide of the archive.
Instructions on how to use the ISO Archive
Your browser must be compliant with JAVA 1.1
Go to the ISO Archive Interface.
Click on "Start IDA applet". The archive applet may take a few minutes
You may do the following simple searches for data:
Target Name: Simbad; NED; Name Given by Observer
Target Coordinates: Equatorial, Galactic, Ecliptic
TDT - ISO's Observation Identification Number
After searching, a list of all observations will be displayed, including
Summary of observations (RA, Dec, instrument, observing mode, wavelength
coverage, aperture, observation date, and total integration time)
Postage stamp view of the observations
If you wish, you may also perform the following expert searches for data:
CAM, for: Gain, Integration Time
LWS, for: Scan Direction, Continuum Flux
PHT, for: Ramps per Chopper Plateau, Integration Time
SWS, for: Shutter Position, Gain
If you would like to download particular datasets, press the "Login/Register"
button and register with the ISO Data Center at ESAC. Getting
a login ID requires about 24 hours. After you have registered, you may
download data from the archive anytime thereafter.
After making a request for data, the data are then reprocessed through
the latest pipeline reduction and put in a public ftp area at ESAC. You
will be notified via email and given the location where to pick up the
You may access special products by changing the "Quality" to "Any," selecting
"Non-Standard" and "Engineering" observation types, and include parallel
mode and serendipity survey data in your search. You can do this by clicking
the boxes "Inc Parallel" or "Inc Serendipity" below the "Obs Type".
These special products include:
These handbooks may be found online from the ESA website under "ISO
CAM// and CAM\\ (Staring and Slewing Parallel Mode) - Section 3.4 of the
LWS// and LWS\\ (LWS Parallel and Serendipity Mode) - Section 2.2.7 of
the ISOLWS Handbook
PHT77 (PHT Serendipity Mode) - Section 3.9 of the ISOPHOT Handbook
Calibration and Engineering Data
For "Quality" = "Good", the downloaded data is useful for scientific research.
In general, the highest data quality may be produced by downloading all
files associated with an observation and using the interactive analysis
packages described in documents found on the IPAC (http://www.ipac.caltech.edu/iso/iso.html)
and ESA (http://www.iso.esac.esa.int)