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 Each session (excepted the first one) includes a few invited and contributed
 talks, followed by a panel discussion of at least 1/2 h, led by 4-5 
 specialists, including the speakers. 
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Day 1.-- Friday, 2004 June 4	(Salle du Château, Meudon Observatory)

 09:00-09:10 Opening remarks
Session 1.
 09:10-10:10 Introduction of National Comet Groups
Session 2.
 10:30-12:30 Professional Uses of Cometary Data Obtained by Amateurs.  I.
               (Radio Fluxes, Outgassing rates, Optical Photometry,
               Spectrophotometry, Light curves and Imaging)

Session 3.
 14:00-15:30 Professional Uses of Cometary Data Obtained by Amateurs.  II.
               (Astrometry, Discovery, Space Missions to comets)
Session 4.
 16:00-18:00 Standard Procedures for Broadband Visual/CCD Photometry
               (including the use of filters)

 18:30       Reception/Dinner buffet at the Paris town hall
 20:30       Reception and visit of the Paris Observatory (Observations
               weather permitting)
 00:30       Bus leaves for the Hotel

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Day 2.- Saturday, 2004 June 5	(Salle du Château, Meudon Observatory)

  9:30-09:40 Opening remarks
Session 5.
  9:30-10:30 Spectroscopy and the potential of amateur CCD spectroscopy
Session 6.
 10:50-12:30 Comet Discovery and Internet tools

Session 7.
 14:00-15:30 Techniques, Software, and Problems Concerning Cometary Astrometry
Session 8.
 15:50-17:30 Comet-Imaging Techniques (both photographic and CCD),
               Software, References, and Interpretation
 17:30       Closing remarks

 18:00       Visit of Meudon Observatory

 22:00-01:00 (after dinner) Observations at Meudon, weather permitting

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Day 3.- Sunday, 2004 June 6

  9:30       Bus leaves for Paris - free, visit
 14:00-15:30   (Salle de l'Atelier, Paris Observatory)
             Organizing Committees meeting for conclusion of IWCA-III
               and preparation of IWCA-IV (to be confirmed)

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