A - F

G - L

M - R

S - Z

Jeff Ball  
Cees Bassa  
Ullrich Beinert 
Steve Bell 
Matt BenDaniel 
Denis Bergeron 
Richard Berry 
Robert Bickel
Adam Block
Michel Bonnement  
Shekhar Borde
John Boudreau
Rick Bright
Mike Brown
Donald Bruns
David Cash
Adrian Catterall
Jean-Philippe Cazard
David Churchill
António Cidadăo  
Doug Clapp
Michael Cole
Brian Colville
Lorenzo Commoli
Chris Cook
Mike Cook
Robert Dalby
Tom Diana
Russ Dickman
Jose Carlos Diniz
Brad Erhorn/RC Optical
Bob and Janice Fera
Ken Fields
Bill & Sally Fletche
James Foster

Gordon Garradd
Joel Gelber
Rob Gendler 
Martin Germano
Stephen Girimont
John Gleason
Angel Gomez
Ray Gralak
George Greaney
Piermario Gualdoni
Tony & Daphne Hallas  
David Hanon
Jörg Hartmann
Johnson Space Center Astronomical Society
Alan Jordan
Steven Juchnowski
Javor Kac
Peter Katreniak
Mark Kaye
Philipp Keller
Al Kelly 
Kent Kirkley
Yuuji Kitahara
Sven Klügl
Clayton Klesser
Dave Kodama
Jon Kolb
Michael Kunze
Brian Larmay
Philip Lau
Steve Lee
Thierry Legault  
Jason Lewis
Jerry Lodriguss 
Marco Lorenzi
Brian Lula 

Andrew Mackenzie
Dale Mais
Jean-Marie Maillard
Steve Mandel
Marswatch (1998-1999)
Michael Matassa
Bill McLaughlin
Axel Mellinger
Giorgio Mengoli
David Messier
Bobby Middleton
Wil Milan
John Mirtle
Philippe Moussette
Manfred Mrotzek
Peter Mumbower
George Nikolidakis
Shigemi Numazawa
Dennis Oblander
Observations de Mars (S2P)
Planetary Observer Forum
Kunihiko Okano  
Bob O'Leary
Thor Olson
Herm Perez
Philip Perkins 
Dennis Persyk 
Jean-Michel Pierre 
Tony Pilato
Planetology Station of the Pyrénées (S2P)
Tom Polakis
John Polhamus
Patrice Poyet
Pierre-Olivier Pujat  
Zac Pujic Jupiter Page
Pedro Ré
Geramy Rapp
David Ratledge
Glenn Ray
Robert Reeves
Jörg Reymendt
Gerald Rhemann
Stan Richard
Michael Richmann
Dave Rowe

Philipp Salzgeber
S.B.I.G. (Santa Barbara Instrument Group)
Peter Schluck
Douglas Schmutz
Chris Schur
Preston Scott Justis
Chuck Shaw
Benoit Shillings
Christian Siegl
Doug Snyder
Stefano Sposetti
Michael Stecker
Michelle Stone
Stosh
David Strange
Shoji Suzuki
Nik Szymanek
Loke Tan
Gregory Terrance
Gerard Therin
Geert Vandenbulcke
Chuck Vaughn
Chris Vedeler
Jim Vineyard
Aike Völker
Brad Wallis 
Brad Wallis & Robert Provin 
Steve Walters
Allen Wang
Jason Ware
Dennis Webb
Kenneth Webb
Ted Wolfe
Bob Yen
Alfredo Zanasso
Matthias Zarp