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THE ROYAL ASTRONOMICAL SOCIETY OF CANADA COMET AND NOVA SECTION DISCOVERY OF A COMET OR NOVA: If you note an unusual object in the sky, please follow this procedure: 1. Make a drawing of the immediate region around the object, marking several known objects. Note the date, time, and seeing conditions. 2. With the aid of a star atlas, estimate the Right Ascension and Declination of the object. 3. Estimate the magnitude by comparison with stars of known brightness. 4. Contact another observer quickly and ask him to confirm your discovery. If there is an observatory in your area, request their staff to check it. 5. Observe the object again in an hour or two later to determine if any motion can be detected in this interval. 6. Send a telegram to the Central Bureau for Astronomical Telegrams, followed by a letter giving more detailed information. The cable address is "SATELLITES NETWORK" (Western Union: RAPID SATELLITE CAMBMASS)" and the postal address is "Central Bureau for Astro- nomical Telegrams, Smithsonian Astrophysical Observatory, Cambridge, Mass. 02138, USA". The telegram should contain the date, time, position, brightness and motion (if any). A special delivery letter to the National Co-ordinator of the Comet and Nova Section should follow. This is an example of a discovery telegram for a hypothetical object: SATELLITES NEWYORK NEW OBJECT JULY 24 0655 U.T. RA 19H 40M DEC PLUS 25 DEG 00 MIN. MAG 7. MOTION TO NW 3 MIN ARC PER HOUR NAME ADDRESS C & N Form #3 (rev.8/65)