THE ROYAL ASTRONOMICAL SOCIETY OF CANADA LA SOCIETE ROYALE D'ASTRONOMIE DU CANADA (RASC Seal) 136 DUPONT STREET TORONTO, ONTARIO M5R 1V2 10 July 1991 Dear Expedition Member, We take pleasure in welcoming you to The Royal Astronomical Society of Canada 1991 Solar Eclipse Expedition. This endeavour is a project of the National Council of the Society, and the Expedition has been more than two years in preparation and planning. Astronomers around the world have been waiting eagerly for this solar eclipse for many years, some for many decades. The "big one" that we will witness tomorrow features the longest duration of totality since the year 1973 and the longest until the year 2132. We are all very lucky and privileged to have the opportunity to observe such a wonderful and spectacular event. In this package of material you will find detailed information and statistics for our three observing sites, an aircraft seating/hotel accomodation/bus allocation list, sky maps representing the sky over Mexico during the total phase of the eclipse, a special Eclipse Quiz (for which prizes will be awarded later today), name tags, and adhesive decals that have been created especially for our Expedition. You will also find a Personal Observation Log, which will help you to plan and record your observations. We encourage those of you who are new to our organization to consider joining the RASC, which is the largest national astronomical organization in the world. The Society has 22 Centres across Canada, and many foreign members. The Society's Journal and annual observer's Handbook are internationally respected publications that are suitable for both professional and amateur astronomers. Inquiries may be made to the RASC National Office in Toronto. Once again, we welcome you to the Expedition, look forward to meeting each of you, and wish you clear skies, Quo Ducit Urania! Michael S. F. Watson Expedition Leader J. Randy Attwood Steve Dodson Solar Eclipse Committee Solar Eclipse Committee __________________________________________________ HOTEL ACCOMODATION LEGEND : SHARED ROOM: / SINGLE OCCUPANCY: - RASC 1991 SOLAR ECLIPSE EXPEDITION AIRCRAFT SEAT ASSIGNMENTS SEAT NO. NAME REG. NO (LIST OF PEOPLE, PAGES 2 AND 3) __________________________________________________ THE ROYAL ASTRONOMICAL SOCIETY OF CANADA 1991 SOLAR ECLIPSE EXPEDITION OBSERVING SITE DATA SANTIAGO N. OF TODOS ATACAMA, B. C. S. SANTOS, B. C. S. NAYARIT LONGITUDE 109°, 44!0 110°, 13!4 105° 11!2 LATITUDE 23°, 27!0 23°, 39!9 21°, 30!0 DISTANCE TO 12 KM 4 KM 50 KM CENTRE LINE 1ST CONTACT 10:24:44.9 10:23:33.8 10:36:39.8 2D CONTACT 11:49:29.8 11:47:59.1 12:03:24.6 (CORRECTED) MAXIMUM 11:52:56.4 11:51:29.2 12:06:41.3 ECLIPSE 3D CONTACT 11:56:16.9 11:54:52.6 12:09:53.3 (CORRECTED) 4TH CONTACT 13:20:59.6 13:19:36.5 13:33:24.6 DURATION 6:47.1 6:53:5 6:28.7 (CORRECTED) 1ST CONTACT ALTITUDE 62°45 61°74 69°23 AZIMUTH 86°82 86°99 84°15 MID-ECLIPSE ALTITUDE 82°63 81°82 89°39 AZIMUTH 99°02 99°32 349°45 MAGNETIC 10°0 E. 10°15 E. 8°8 E. VARIATION _______________________________________ DIAGRAM OF SKY AT TOTALITY _______________________________________ CAMERA LENS FOV & PLANETS AT TOTALITY
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