The establishment of a prize fund in honor of Bart J. Bok, Robert Wheeler Willson Professor of Applied Astronomy was announced yesterday.

Bok, a leading expert on the Milky Way, will leave the University in January to direct the Mt. Stromlo Obseratory of the Australian National University.

Income from the fund, established by an anonymous $6,000 donation, will be used every two years as a prize for a thesis, book or paper "in the area of Milky Way research by observational methods."