International Halley Watch Volumes 25 and 26

Spacecraft Encounters with Halley

The Halley Watch CD-ROMs are no longer available. However, the data from these are available online at the PDS IHW page.

The final two volumes, 25 and 26, of the International Halley Watch contained the images and data acquired by the various spacecraft sent to rendezvous with comets P/Halley and P/Giacobini-Zinner. The earlier 24 volumes contained remote data only. The spacecraft represented on these volumes are Giotto, Sakigake, Suisei, Vega 1, Vega 2, and ICE. A detailed list of the experiments and data covered on these two volumes is also available. The images at the top of the page show Vega 1, Giotto, and Vega 2 images, respectively, of Halley's Comet. These and other images of comet Halley from the CD-ROMs are available.

Volume 25 contained selected measurements and images of comet P/Halley from the Giotto , the Suisei , and the Sakigake missions spanning 3 - 15 March 1986. Volume 26 held measurements and images of P/Halley from the VEGA 1 and VEGA 2 missions spanning 27 February to 10 March, 1986, and of P/Giacobini-Zinner from the ICE (ISEE-3) mission, 8 - 14 September, 1985. A User's Guide is included in the set.

Images and tables on the disk are archived in the Flexible Image Transport System (FITS) format. The IHW CD-ROMs were assembled under the auspices of the PDS Small Bodies Node at the University of Maryland.

Giotto image of Halley taken on 13 March 1986

Contents of Volumes 25 and 26 - Index of the data and images on the CD's.
A sample of images from the IHW CD-ROMs
Detailed information from the CD-ROMs
Comets and Asteroids page - Information and links to other information on Comets
Comet Fact Sheet - Data on Comets, including Halley and Giacobini-Zinner
On-line access to the CD-ROM data - at the PDS Small Bodies Node

Asteroids and Comets page

Dr. David R. Williams,
NSSDCA, Mail Code 690.1
NASA Goddard Space Flight Center
Greenbelt, MD 20771

NASA Official: Dave Williams,
Last Updated: 11 January 2022, DRW