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Mark C. Petersen is president and founder of Loch Ness Productions.

Mark's degree is in Music Education from the University of Colorado. In 1975 he became the Composer-in-Residence at Boulder's Fiske Planetarium. After many pleased planetarium patrons requested the music they had heard during the programs, Mark released the first of a series of albums using the nom-de-plume GEODESIUM -- a name now synonymous with planetarium music. Tens of thousands of his albums have been sold around the world, receiving airplay on syndicated radio programs such as "Music From The Hearts of Space", "Musical Starstreams" and "Echoes". In January 1995, CNN's "Showbiz Today" featured Mark in a segment on planetarium space music.

Mark has also created original music and custom soundtracks for major planetaria, Sky-Skan, Evans & Sutherland, NASA News Net's coverage of the Voyager encounters, and video press releases from the Space Telescope Science Institute. For Caedmon Records, he produced 20-minute "Comet Halley" soundtrack for worldwide distribution. In 1985, 1987, and 1988, he took his keyboards on the road, performing in live planetarium concerts in the U.S. and the U.K. Mark has also worked with advertising agencies, film, video, and multi-image producers on radio and TV commercials, jingles and other projects.

Mark produced the video program "HUBBLE: Report From Orbit", which was awarded First Prize in the Casa de las Ciencias (La Coruña, Spain) Sixth Contest for Science Publications in 1993.

Mark served as President as well as Secretary/Treasurer of the Rocky Mountain Planetarium Association (1983-87), and instituted the publication of its quarterly journal, the High Altitude Observer. A Fellow of the International Planetarium Society, he served as Treasurer and Membership Chairman from 1985 to 1990, and undertook the development and annual publication of the IPS Directory of Planetaria and Planetarians.