ULYSSES Cosmic and Solar Particle INvestigation (COSPIN)

The COSPIN Experiment on Ulysses provides measurements of energetic nucleons and electrons in various energy ranges extending upwards from about 0.5 MeV. The experiment consists of five sensor systems, each with specific objectives for obtaining a comprehensive picture of the energetic charged particle environment. The sensors are
These instruments provide measurements of the intensities, spectra, arrival directions, and nuclear and isotopic composition of galactic cosmic rays, anomalous components, solar energetic particles, and of particles accelerated in the solar wind and planetary magnetospheres.

The COSPIN Consortium was organized in 1977 by John A. Simpson, Professor of Physics at the University of Chicago, and one of the leading space scientists from the earliest years of investigations in space. He continued as Principal Investigator of the COSPIN consortium until 1996. The current Principal Investigator, R. B. McKibben, then also of the University of Chicago, was appointed upon his resignation.

In 2002, the P.I. moved to the Space Science Center of the Institute for the Study of Earth, Oceans, and Space at the University of New Hampshire. COSPIN activities are now coordinated from the University of New Hampshire.

E-Mail to the P.I.



The COSPIN Consortium

Brief Description of Instrumentation and Statement of Scientific Objectives

COSPIN Investigators and Institutions

COSPIN Consortium Publication List




Other COSPIN Web Sites

Anisotropy Telescopes: AT Home Page

Low Energy Telescope: LET Home Page

High Energy Telescope: HET Home Page

High Flux Telescope: HFT Home Page

Electron Telescope: KET Home Page


Data Access

Data from all COSPIN telescopes, most commonly 10 minute averages of counting rates, may be accessed on-line through the Ulysses Data System. Data coverage extends from launch in October 1990 to a few months behind real time. For more recent data or other data products, contact the P.I. or the lead investigator for the particular telescope from which you need data using the links on the telescope home pages above.


On-line Documentation for Ulysses Project and COSPIN data products

These links provide detailed formats and descriptions of the basic data products from the Ulysses Project (Experiment Data Records and Common Data Files) and of the first pass COSPIN processing (Simgen) applied to the EDRs to produce the COSPIN datafiles (SIMTAPEs) that serve as the basis for all further COSPIN processing and analysis.

These links require the Acrobat Reader, and provide more detail than you probably want unless you are working directly with the raw data.

Ulysses Experiment Data Record Software Interface Specification
Ulysses Common Data File Software Interface Specification
Simgen Basic Processing Program FORMATS & Description


Other links


Ulysses Mission Home Pages at NASA/JPL and ESA/ESTEC

Diagram of the Ulysses Spacecraft

The Ulysses Logo

Trajectory Information



This page last modified February 19, 2003.

Send comments to bruce.mckibben@unh.edu