Release of the ISO New Interim Archive on 16/05/2001

News of the day

In the afternoon of the 16th of May 2001, the ISO New Interim Archive has been released.

A bit of history

The ISO Interim Archive was released on 09/12/1998 where all the ISO telemetry had been processed with the version of the Offline Processing Software and Calibration files available at the end of the ISO mission, ie OLP 7.0.1 and CALG 4.0.

This produced a complete and uniformly processed set of ISO data that was saved on CDROM jukeboxes.

Later on, when new version of the Offline Processing Software and Calibration files become available, on-the-fly processing facility was provided in the ISO Data Archive to allow users to get the best up-to-date ISO products.

This facility is accessible in the ISO Data Archive Applet Confirmation of Request panel (once you've submitted your data retrieval request) by choosing YES on the "Latest Available Processing" tick button (default option).

But no systematic and complete reprocessing of all ISO telemetry was performed.

The ISO New Interim Archive

For the last months, we have undertaken reprocessing all ISO telemetry with OLP 9.1 and CALG 6.0 to produce a complete and uniform set of ISO products. This time, as technology has evolved, all the products are stored directly on magnetic disks which allows faster access.

These uniformly processed products are accessible in the ISO Data Archive Applet Confirmation of Request panel (once you've submitted your data retrieval request) by choosing NO on the "Latest Available Processing" tick button.

All icons, postcards and survey products available from the ISO Data Archive applet have also been reprocessed.

Note that the on-the-fly reprocessing facility is still available with OLP 9.5 and CALG 6.5.

Looking at the future...

By the end of this year, the final ISO Legacy Archive will be produced by reprocessing all the ISO telemetry with the last Offline Processing Software and Calibration files (OLP 10.0 and CALG 7.0).

All ISO products will also be put on magnetic disks for fast retrieval. The New Interim Archive and the on-the-fly reprocessing facility will both become obsolete and be removed from the ISO Data Archive.


The ISO Data Archive can be accessed at http://www.iso.vilspa.esa.es/ida.

Christophe Arviset, ISO Data Centre, 16/05/2001