|Science Fiction Convention|
|Frequency:||the third one was in 1994|
|Focus:||science fiction, books, Star Trek|
|Organization:||The Rochester Fantasy Fans, a club out of Rochester, New York|
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Astronomicon was a Rochester, NY science fiction and media con.
The third con was held March 4–6, 1994 at the Radisson Inn Rochester.
- Author Guest of Honor: Jack Chalker
- Media Guest of Honor: Grace Lee Whitney
- Artist Guests of Honor: Frank Kelly Freas and Laura Brodian-Freas
- Fan Guest of Honor: jan howard finder (aka Wombat)
- other guests: SF/Fantasy Authors: Nancy Kress, Robert J. Sawyer, Mark Garland, John Allen Price, Doranna Durgin, Nick Dichario—TNG/DS9 script writer: Sarah Higley/Sally Caves -- "Bewitched" book author: Herbie J. Pilato—Filk Artists: Urban Tapestry and Larry "The Doctor" Stewart