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Édition Août 2014 « DU SAVOIR AU VÉCU »

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Édition Août 2014 « DU SAVOIR AU VÉCU » Édition Août 2014 « DU SAVOIR AU VÉCU » SOMMAIRE Le mot de l’éditeur ................................................................................................ 4 Événements, nouvelles et anecdotes ................................................................... 5 11 juillet à St-Pierre, un vendredi occupé ................................................................... 5 Un 24 juillet à St-Pierre… ............................................................................................. 5 De nouveaux membres à St-Pierre .............................................................................. 6 SMI 9 août Massif du Sud ............................................................................................ 6 Question d’astronomie .......................................................................................... 7 67P/Churyumov-Gerasimenko .................................................................................... 7 La sonde Rosetta, des précisions de Pierre ................................................................. 8 Gamma du Cygne......................................................................................................... 8 La région du Cygne ...................................................................................................... 9 M 57 par les pros ....................................................................................................... 10 UGC 10822 ................................................................................................................. 11 Rapport d’observation ......................................................................................... 12 Saturne du vendredi 11 juillet ................................................................................... 12 La soirée de Pierre Carignan ...................................................................................... 12 Rapport d’un des 2G .................................................................................................. 13 Rapport d’un nouveau compatriote .......................................................................... 14 Astrophotographies ............................................................................................. 15 La galaxie de la Baleine .............................................................................................. 15 Hier soir, le 30 juillet, à St Pierre ............................................................................... 15 Jet-Moon ! ................................................................................................................. 15 Comètes et astéroïdes ........................................................................................ 16 Comète Jacques, 290P Jager, P/LINEAR (209P), P/Schwassmann-Wachmann (29P) et C/2013 V1 Boattini .................................................................................................... 16 La comète qui se prenait pour un astéroïde : C/2013 UQ4 (Catalina) ...................... 17 Un record pour Jeff Viens .......................................................................................... 18 C/2013 K1 (PANSTARRS) ............................................................................................ 18 Pierr’Eau La Lune 2 La comète Jacques ce matin ...................................................................................... 19 Un bolide ................................................................................................................... 19 Des comètes en vrac .................................................................................................. 19 Comète Holmes (17P) ................................................................................................ 20 Comète Jacques et M 17 ........................................................................................... 20 La comète C/2014-E2_Jacques, ce matin. ................................................................. 21 Section Soleil ...................................................................................................... 21 Activité solaire du 6 juillet ......................................................................................... 21 Explosion solaire presque en temps réel................................................................... 21 Éruption solaire de nuit ............................................................................................. 22 Soleil du 9 août par Jean ............................................................................................ 23 NOS INFOS CLUB .............................................................................................. 24 MERCI À NOS COMMANDITAIRES ! ................................................................ 25 Pierr’Eau La Lune 3 LE MOT DE L’ÉDITEUR Nous remercions tous les collabora- teurs qui ont partagé leur vécu as- tronomique avec nous. Un merci spécial à la réviseure Marie Valois pour sa patience et son engagement. Bonne lecture ! Luc Caron Éditeur Marie Valois Réviseure Pierr’Eau La Lune 4 ÉVÉNEMENTS, NOUVELLES 21 h 15 à 22 h 15 : observation sur le ET ANECDOTES stationnement des loisirs, +/- 16 curieux ont observé la Lune et Saturne. 11 juillet à St-Pierre, un vendredi occupé 22 h 30 à 1 h : installation et collima- tion des 2 miroirs et observation de Denis Martel (St-Pierre) la Lune, Saturne et M 13. 17 h 30 – 18 h 00 : ramassage du Deux visiteurs sur le site intéressés à miroir 20" du Club pour nettoyage devenir membres et qui ont été ac- saisonnier. Les milliers de cocci- cueillis par Pierre Carignan. Longue nelles ont fait des dégâts à l'alumi- discussion jusque vers minuit avec nure… Troisième fois que je passe le eux. Olivier et Élisabeth avec leur balai dans l'observatoire 20" car le télescope 115 mm, ils débutent en plancher était plein de coccinelles astronomie. mortes… Super soirée chaude, pas humide et 18 h : aucune confirmation ni réser- peu de moustique. Roger Guéguen a vation, soirée PÉMM annulée. atteint ce soir-là 2 045 formations lunaires formellement identifiées ! 18 h 15 à 19 h : souper au local des Vive les vendredis soir d'été étoilés loisirs au party hot dog du terrain de malgré la Lune ! jeux. 19 h à 21 h : lavage de 2 miroirs, le 12" de Roger et le 20" du Club. **** Un 24 juillet à St-Pierre… Denis Martel & Jean-François Viens (COAMND) Pierr’Eau La Lune 5 Bienvenue à Pierre Naccache. Pre- riers, Fernand Laplante, Patricia mière lumière du projet d'un téles- Mayrand, Pierre Naccache et Jean cope 36 pouces à St-Pierre sur... Guimond. Saturne ! Premiers tests d'un con- centrateur solaire 36" sur le Soleil ; **** 600 ºCelsius en 2 secondes ! SMI 9 août Massif du Sud Denis Martel (Club St-Pierre) Astronomique merci à Christian Des- jardins, Daniel Bérard, Alain Chabot et Martin Aubé pour leur généreuse participation à notre premier SMI au Massif du Sud. De 14 h à 23 h, nous avons partagé notre passion de l'astronomie avec les visiteurs (cam- peurs et marcheurs). Superbe météo en après-midi et apparition de voiles nuageux en soirée juste après avoir montré Saturne et la Lune. En journée, de belles protubérances variées et changeantes ont été mon- trées aux visiteurs. La disparition du Soleil derrière une montagne de sa- pins a été très spectaculaire et ra- pide. Denis a initié quelques enfants au jeu du système solaire en après- midi et donné la présentation du sys- tème solaire de la FAAQ en début de **** soirée, question d'attendre la venue de la noirceur et l'apparition de Sa- turne. De nouveaux membres à St-Pierre Marie Valois (Club St-Pierre) Depuis la fin du printemps, plusieurs nouveaux membres ont rejoint notre Club. Je tiens à les accueillir chaleu- reusement et par le fait même, à vous informer de leur arrivée : André Nadeau, Christophe Nadeau, Adrien Noël, Martin Rochette, Rémi Deslau- Pierr’Eau La Lune 6 3 télescopes solaires (35 et 152 mm Lunt H alpha et 80 mm en lumière blanche) et 5 télescopes en soirée ont comblé les visiteurs et l'anima- teur Philippe qui nous a invités pour l'année prochaine. Une belle am- biance nature et détente était au rendez-vous avec des visiteurs calmes et curieux, encore ! noyau de la comète 67P/Churyumov- Gerasimenko, à moins de 285 kilo- mètres de sa surface. Rosetta, lan- cée il y a 10 ans, a parcouru 6,5 milliards de kilomètres dans l’espace interplanétaire, en suivant une trajectoire d’aller-retour Terre/Mars lui permettant d’aller chercher de la puissance fournie par la gravité des planètes qu’elle a con- En espérant que la pleine Lune ne tournées, procédé qu’on appelle sera pas au rendez-vous pour les « assistance gravitationnelle ». Perséïdes de 2015… Il faut vivre une telle activité pour comprendre le grand plaisir éprouvé à partager notre passion à tenter de répondre aux questions des enfants et des adultes présents. Encore merci messieurs ! **** QUESTION D’ASTRONOMIE Le noyau de la comète s’étend sur 4 kilomètres et il est actuellement à 67P/Churyumov-Gerasimenko un peu plus de 400 millions de kilo- mètres de la Terre, entre les orbites Marie Valois (Club St-Pierre) de Jupiter et de Mars. Rosetta est le premier vaisseau spatial à effectuer Le 3 août 2014, la sonde Rosetta, une orbite autour d’une comète. projet de l’Agence spatiale euro- péenne (ESA), a pris une photo du Au cours des prochaines semaines, Pierr’Eau La Lune 7 Rosetta se rapprochera à moins de d'une série de manœuvres très 50 kilomètres du noyau afin spectaculaires qui vont emmener la d’identifier le meilleur endroit pour y sonde à moins
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