The Calibration Legacy of the ISO Mission

(Feb 5-9, 2001, ESAC, Madrid, Spain)

Please Post/Circulate: Second announcement of a Conference ...

                           5-9 February 2001
                            ISO Data Centre
                       Villafranca del Castillo
                             Madrid, Spain
                          |2nd Announcement|

Web site :


This is the second announcement of the conference "The Calibration 
Legacy of the ISO Mission", which will be held at the Data Centre of
the Infrared Space Observatory (ISO) in Villafranca del Castillo near
Madrid (Spain) from the afternoon of February 5 to lunchtime February
9, 2001.

The scope of the conference - outlined below - reflects the wide range
of astronomical and instrumental calibration issues which have been
tackled during the history of the ISO project to-date.  Particular
emphasis will be placed upon the relevance of the ISO experience to
calibration of future space missions, such as, for example, FIRST, 
PLANCK, SIRTF or ASTRO-F.  Contributions addressing the relevance for
the calibration of ground-based or airborne systems are also welcome.

The proceedings should gather, in one place, the legacy of the ISO
calibration work, with emphasis upon clear and thorough exposition of
the experience gained and of the lessons learned for the future.

Venue for the meeting

ISO Data Centre,
Villafranca del Castillo Satellite Tracking Station,
Madrid, Spain.

Scientific Organising Committee

C. Cesarsky (ESO), P. Clegg (QMW), M. Cohen (Univ. of Calif., Berkeley),  
Th. de Graauw (SRON), M.F. Kessler (ESA/ISO) - co-chair, D. Lemke (MPIA), 
L. Metcalfe (ESA/ISO) - chair, H. Okuda (GAO), G. Pilbratt (ESA/FIRST),
J-L. Puget (IAS), T. Soifer (IPAC), B. Swinyard (RAL), M. Werner (NASA).

Local Organising Committee

J. Blommaert, P. Garcia-Lario, C. Gry, M.F. Kessler (Co-chair), 
R.J. Laureijs, K. Leech, J. Matagne, L. Metcalfe (Chair), T. Mueller, 
S. Ott, S. Peschke, A. Salama, B. Schulz, J. Villanueva, A. Willis.

Preliminary Programme

It is envisaged that the meeting will be organised around the following
sessions :

Session 1: Inheritors of the Legacy - Future Missions and Systems

           o  A series of presentations addressing future space
              astronomy missions and possibly other systems, and the
              current planning for their calibration. With these
              missions in mind, over the following days, we will assess
              the ISO experience.

Session 2: Detector Physics 

           o  All infrared detectors suffer from a range of physical 
              effects which complicate the characterisation of their
              response to incident light. In the case of
              photoconductors, as used for ISO, important effects
              include (unstable) dark-current, sensitivity to ionising 
              radiation (see Session 3), baseline drifts and,
              importantly, complex temporal variations in responsivity.
              These modes of behaviour, and the latest methods under
              study for modeling and correcting them, will be

Session 3: Effects of the space environment, and the Spacecraft performance

           o  All spacecraft encounter varying degrees of disturbance, 
              or even hazard, from the space radiation environment.  
              We will discuss what we have learned about the properties
              of this environment and its effects on instrumentation.
              Other influences of the space environment to be addressed
              include thermal loading and stability, the demands of
              pointing and tracking, and the periods when the
              spacecraft is in eclipse during which Solar illumination
              and solar power are lost.  These, of course bear strongly
              upon the performance of the Spacecraft itself.
Session 4: Calibration sources and calibration source databases.

           o  This session will cover the challenges involved in
              establishing databases of calibration sources, especially
              those generated specifically to support the ISO mission
              and now available to the whole community. 

Session 5: Ground-based calibration - how relevant and important IS it ?

           o  Of course, all space-borne instruments need to be 
              rigourously tested for engineering integrity on the
              ground before launch.  Can these tests uncover all 
              problems which might affect in-orbit operations ?
              How important is it to attempt to calibrate, rather
              than simply to test, an instrument on the ground ?
              How relevant is the ground-based calibration to the
              behaviour in-flight ?  If relevant - how essential ?
              Could all calibration be done in-flight ??
Session 6: In-flight routine calibration.

           o  A range of fundamental calibration topics will be
              addressed as they pertain to the ISO mission and

Session 7: Cross-calibration.

           o  The consistency of the calibration of the ISO instruments
              with each-other and with other systems, such as IRAS,
              COBE, KAO, UKIRT etc... will be discussed.

Session 8: Data processing.

           o  This session will address important issues influencing
              the scope and design of data reduction systems for
              complex missions. Automatic "pipeline" type data
              reduction and also more conventional Interactive Analysis
              systems will be covered.

Session 9: Lessons Learned for future missions and wrap-up.

           o  Stressing the key theme of the conference, this session
              aims to distill the essential conclusions and lessons
              learned. These might help to anticipate problems and
              difficulties in future missions, and help to eliminate
              them. A substantial period will be set aside for an open

Calendar of events

 Mid. Oct. 2000: Third announcement with definitive invited programme,
                 call for abstracts and more logistical information.

 Mid. Nov. 2000: Deadline for submission of a one-page abstract.
Early Jan. 2000: Fourth announcement, with final programme, lists of 
                 posters and talks.

05-09 Feb. 2001: The conference takes place.


The Proceedings will be published in the ESA Special Publications
series within about six months of the meeting. In order to meet this 
schedule, the deadline for receipt of the manuscripts is set to  
01 April 2001. Inputs for the Proceedings should be submitted 
electronically in LaTex format. A LaTeX template for the papers will be
posted on the workshop WWW site prior to the meeting. A copy of the
Proceedings will be sent to each participant.

Registration form and abstract

Registration and submission of abstracts will be solicited at the time
of the Third Announcement and publication of the list of invited
speakers, in mid-October 2000. There will be no registration fee for the