The final two volumes, 25 and 26, of the International Halley Watch CD-ROM set are now available at NSSDCA. These volumes contain 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.
The volumes are sold together as a set. Volume 25 contains selected measurements and images of comet P/Halley from the Giotto , the Suisei , and the Sakigake missions spanning 3 - 15 March 1986. Volume 26 holds 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. On-line access to the CD-ROMs is available there.
Giotto image of Halley taken on 13 March 1986