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Goddard Space Flight Center

Astrophysics Science Division | Sciences and Exploration

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Mission Chronicles

All NASA updates will be posted on the Daily Mission Updates pages after launch. News updates from the media and articles of general interest will still be posted on this page.

Recent Articles:
Notes from the Hubble Project team, January 4, 1999

Notes from the Hubble Project team, January 4, 1999

With the installation of the 486 Advanced Computer during SM-3A, the DF-224 flight software project has come to an end. Although it was a 1970s-vintage computer, the DF-224 served us very well through the years. With the addition of a 386 coprocessor and additional memory during the First Servicing Mission in 1993, the DF-224 provided flight software services to each of the other HST subsystems right up to its replacement on December 23 of last year.

When I began working on the DF-224 flight software project in 1991, I was very much impressed with how clearly and efficiently the software had been written. The original authors set of a standard of excellence to which the DF-224 flight software team has always striven to aspire.

On behalf of myself and the rest of the DF-224 flight software team, it has been a pleasure working with you, and we look forward to working with you again in the future on the new 486 flight software project.

Dr. David G. Simpson
DF-224 Flight Software Team Lead