1978 Tuthill Comet Award Roger Tuthill for discovering Comet Machholz (1978L)
1979 Messier Award Astronomical Association of Northern California for finding all the Messier objects
1979 Award of Merit Astronomical Assoc of N. California for fostering amateur astronomy
1982 Warren Estes Memorial Award Riverside Telescope Makers Conference for best instrument made out of simple materials (10 refl)
1985 Tuthill Comet Award Roger Tuthill for discovering Comet Machholz (1986e)
1986 Tuthill Comet Award Roger Tuthill for discovering Periodic Comet Machholz 1 (1986e)
1987 The Dr. A.B. Gregory Award San Jose Astronomical Association Sharing the hobby of astronomy
1988 Caroline Herschel Award Western Amateur Astronomers for my studies of comets
1994 Walter H. Haas Award Association of Lunar and Planetary Observers for my discovery of comets
1995 Natalie Leonard Award Sacramento Valley Astronomical Association for outstanding service to the society
1995 Clifford W. Holmes Award Riverside Telescope Makers Conference Sharing telescope making
1995 Bruce Blair Award Western Amateur Astronomers Contributions to the field of amateur astronomy
2000 Peggy Haas Service Award Association of Lunar and Planetary Observers Service to ALPO and amateur astronomy
2004 SVAS Messier Award Sacramento Valley Astronomical Association for finding all the Messier objects
2004 Edgar Wilson Award Smithsonian Astrophysical Observatory for discovering Comet Machholz C/2004 Q2
2010 Edgar Wilson Award Smithsonian Astrophysical Observatory for discovering Comet Machholz C/2010 F4
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