{"id":28020,"date":"2020-03-26T17:02:16","date_gmt":"2020-03-26T16:02:16","guid":{"rendered":"http:\/\/www.astrobreuillet.fr\/wordpress\/?p=28020"},"modified":"2025-02-09T19:04:16","modified_gmt":"2025-02-09T18:04:16","slug":"la-comete-de-lannee","status":"publish","type":"post","link":"https:\/\/www.astrobreuillet.fr\/wordpress\/?p=28020","title":{"rendered":"La com\u00e8te de l’ann\u00e9e ?"},"content":{"rendered":"

Views: 484<\/p>[et_pb_section fb_built=”1″ _builder_version=”3.26.6″ custom_padding=”0px|||||”][et_pb_row column_structure=”1_2,1_2″ _builder_version=”3.26.6″ custom_margin=”|auto|-22px|auto||” custom_padding=”2px|||||”][et_pb_column type=”1_2″ _builder_version=”3.26.6″][et_pb_post_title featured_image=”off” text_color=”light” _builder_version=”3.26.6″ background_color=”#0C71C3″ custom_margin=”|||-48px|false|false” custom_padding=”10px|10px|10px|10px|false|false”][\/et_pb_post_title][et_pb_text _builder_version=”3.26.6″ text_text_color=”#000000″ text_font_size=”16px” text_line_height=”1.6em” custom_padding=”23px|||||”]\n

Depuis la visite de la grande com\u00e8te d’Hale-Bopp en 1995 on nous promet chaque ann\u00e9e, ou<\/strong> presque, une grande et belle com\u00e8te visible \u00e0 l’oeil nu<\/strong>.<\/span><\/p>\n

Mais il se pourrait bien que cette fois-ci nous ayons droit \u00e0 une bonne surprise.
\nLa com\u00e8te “Atlas<\/strong>” qui r\u00e9pond au matricule ATLAS C\/2019 Y4<\/strong> pr\u00e9sente d\u00e9j\u00e0 une magnitude 8\u00a0( certes invisible \u00e0 l’oeil nu ) <\/em>alors qu’elle se trouve encore \u00e0 225 millions de km du Soleil (en gros loin comme l’orbite de Mars\u00a0<\/em>)…
\nPour les initi\u00e9s c’est tr\u00e8s bon signe !<\/span>[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/CometOrbitPic.png” _builder_version=”3.26.6″][\/et_pb_image][et_pb_text _builder_version=”3.26.6″ text_text_align=”center” text_text_color=”#0C71C3″ text_font_size=”16px” text_line_height=”1.6em”]\n

vue du dessus de la position de la com\u00e8te au 25 mars<\/p>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ _builder_version=”3.26.6″ custom_padding=”10px|||||”][et_pb_column type=”1_2″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/comete-presage.jpg” _builder_version=”3.26.6″ custom_margin=”-37px||||false|false” custom_padding=”2px||||false|false”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”3.26.6″][et_pb_text _builder_version=”3.26.6″ text_text_color=”#000000″ text_font_size=”16px” text_line_height=”1.6em” min_height=”265px” custom_margin=”auto||auto||false|false” custom_padding=”23px|||||”]\n

Dans le registre des annonciatrices de malheur, avec le confinement mondial en cours, celle-ci pourrait jouer dans le Guiness des Records.
La com\u00e8te “Atlas<\/strong>” sera ( esp\u00e9rons\u00a0<\/em>) un peu en retard sur l\u2019\u00e9v\u00e9nement, mais nous ne manquerons pas de voir d\u00e9barquer des “sachants” qui feront le “buzz”. En attendant de faire paniquer les stockeurs de p\u00e2tes, les astrophotographes se frottent les mains et avec eux tout les amoureux des ph\u00e9nom\u00e8nes naturels.<\/p>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,1_3,1_3″ _builder_version=”3.26.6″ min_height=”377px” custom_padding=”0px||8px|||”][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_team_member name=”le 26 mars” position=”photo de St\u00e9phane” image_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/comete-26-mars.jpg” icon_color=”#FFFFFF” use_icon_font_size=”on” _builder_version=”3.26.6″ header_level=”h3″ header_font=”|700||on|||||” header_text_color=”#000000″ header_line_height=”1.2em” body_text_color=”#000000″ body_font_size=”16px” body_line_height=”1.6em” border_radii_image=”on|10px|10px|10px|10px” text_orientation=”center”]\n

15x60sec 2000 ISO. Ritchey 8″ 1600mm de focale. Canon Eos 6D .<\/p>\n[\/et_pb_team_member][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/C2019Y4-map-general2.jpg” show_in_lightbox=”on” align=”center” _builder_version=”3.26.6″ max_height=”330px” custom_margin=”|auto||auto|false|false”][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_team_member name=”le 1 avril” position=”photo de St\u00e9phane” image_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/04\/web-comete-atlas-010420.jpg” icon_color=”#FFFFFF” use_icon_font_size=”on” module_class=”wplightbox” _builder_version=”3.26.6″ header_level=”h3″ header_font=”|700||on|||||” header_text_color=”#000000″ header_line_height=”1.2em” body_text_color=”#000000″ body_font_size=”16px” body_line_height=”1.6em” border_radii_image=”on|10px|10px|10px|10px” text_orientation=”center” link_option_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/04\/web-comete-atlas-010420.jpg”]\n

15x60sec 2000 ISO. Ritchey 8″ 1600mm de focale. Canon Eos 6D .<\/p>\n[\/et_pb_team_member][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,1_3,1_3″ _builder_version=”3.26.6″ custom_margin=”-24px|auto||auto||” custom_padding=”||6px|||”][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_team_member name=”le 23 mars” position=”photo d’ Olivier” image_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/comt-24-03-olivier-25×60.jpg” icon_color=”#FFFFFF” use_icon_font_size=”on” _builder_version=”3.26.6″ header_level=”h3″ header_font=”|700||on|||||” header_text_color=”#000000″ header_line_height=”1.2em” body_text_color=”#000000″ body_font_size=”16px” body_line_height=”1.6em” border_radii_image=”on|10px|10px|10px|10px” text_orientation=”center”]\n

C\/2019 Y4 Atlas.\u00a0 25mn de pose<\/p>\n[\/et_pb_team_member][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_team_member name=”le 25 mars” position=”photo de st\u00e9phane” image_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/atlas-y4.jpg” icon_color=”#FFFFFF” use_icon_font_size=”on” _builder_version=”3.26.6″ header_level=”h3″ header_font=”|700||on|||||” header_text_color=”#000000″ header_line_height=”1.2em” body_text_color=”#000000″ body_font_size=”16px” body_line_height=”1.6em” border_radii_image=”on|10px|10px|10px|10px” text_orientation=”center”]\n

Alignement sur les \u00e9toiles.
15x60sec. 2000iso<\/p>\n[\/et_pb_team_member][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”3.26.6″][et_pb_team_member name=”le 25 mars” position=”photo d’ Olivier” image_url=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/03\/comt-25-03-olivier-25×60.jpg” icon_color=”#FFFFFF” use_icon_font_size=”on” _builder_version=”3.26.6″ header_level=”h3″ header_font=”|700||on|||||” header_text_color=”#000000″ header_line_height=”1.2em” body_text_color=”#000000″ body_font_size=”16px” body_line_height=”1.6em” border_radii_image=”on|10px|10px|10px|10px” text_orientation=”center”]\n

Alignement sur les \u00e9toiles. Pour 25x60sec le d\u00e9placement apparent est de 48″ d’arc soit un peu plus du diam\u00e8tre de la Lune en 24h<\/p>\n[\/et_pb_team_member][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”3.26.6″ min_height=”279px”][et_pb_column type=”4_4″ _builder_version=”3.26.6″][et_pb_text _builder_version=”3.26.6″ text_text_color=”#000000″ text_font_size=”16px” text_line_height=”1.6em”]\n

Tout cela n’\u00e9tait qu’un avant gout…<\/strong>
Alors qu ‘Atlas s’\u00e9teignait bien vite, une autre suprise attendait les astronomes et les photographes du monde entier : la com\u00e8te “Neowise<\/strong>”\u00a0 (C\/2020 F3 pour les intimes).<\/p>\n

Apr\u00e9s son passage au p\u00e9rih\u00e9lie le 3 juillet la com\u00e8te atteignit une magnitude record de 1. Il fallait alors\u00a0 se lever bien t\u00f4t pour appr\u00e9cier, \u00e0 l’oeil nu<\/strong> ,ce spectacle rare. Puis la com\u00e8te s’est rapidement \u00e9loign\u00e9e de l’astre du jour, et elle fut splendide dans le ciel du soir \u00e0 partir du 20 juillet.
Du monde entier les images arrivaient sur les \u00e9crans faisant m\u00eame les titres des journaux.
\u00c9videment le Club d’astronomie de Breuillet<\/strong> et sa section “Fadas du Pixel<\/em>” ne sont pas rest\u00e9 les mains dans les poches et les boitiers photo dans les sacs : retrouvez ici quelques une des plus belles r\u00e9ussite des membres du club.<\/p>\n

<\/h1>\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_4,1_4,1_4,1_4″ _builder_version=”3.26.6″][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/08\/Comete_NEOWISE_Blandy_110x_20s_2000iso_135mm_f2.8_18072020.jpg” show_in_lightbox=”on” _builder_version=”3.26.6″][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/08\/DSC7150-1.jpg” show_in_lightbox=”on” _builder_version=”3.26.6″][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/08\/noewise-by-christopher.jpg” show_in_lightbox=”on” _builder_version=”3.26.6″][\/et_pb_image][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_image src=”https:\/\/www.astrobreuillet.fr\/wordpress\/wp-content\/uploads\/2020\/08\/tourelle-sequator.jpg” show_in_lightbox=”on” _builder_version=”3.26.6″][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_4,1_4,1_4,1_4″ _builder_version=”3.26.6″ min_height=”421px” custom_margin=”-31px|auto||auto||” custom_padding=”||4px|||”][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_accordion _builder_version=”3.26.6″][et_pb_accordion_item title=”Cyril Noger” open=”on” _builder_version=”3.26.6″]\n

Image issue de 110 poses de 20s conserv\u00e9es \u00e0 2000 iso prise \u00e0 Blandy le 19 juillet dernier vers 0h30 dans des conditions de ciel pas optimales.\u00a0Ciel pas franchement limpide, pollution lumineuse de Paris perceptible et brume augmentant au fur et \u00e0 mesure que la nuit avan\u00e7ait.\u00a0Nuages pr\u00e9sents en quasi permanence sur toutes les photos d’o\u00f9 le ciel laiteux une fois les images stack\u00e9es.<\/span><\/p>\n[\/et_pb_accordion_item][et_pb_accordion_item title=”prise de vue” _builder_version=”3.26.6″ open=”off”]\n

    \n
  • APN : Sony A7S\u00a0<\/span><\/li>\n
  • Monture Losmandy TimeLapse<\/span><\/li>\n
  • Pr\u00e9traitement et et traitement sous Pixinsight<\/span><\/li>\n
  • Att\u00e9nuation des d\u00e9fauts du ciel sous Lightroom<\/span><\/li>\n<\/ul>\n[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_accordion _builder_version=”3.26.6″][et_pb_accordion_item title=”Cyril Noger” _builder_version=”3.26.6″ open=”off”]\n

    Photo unique de 3.2s . Ollainville le 11 juillet \u00e0 4h15 du mat.\u00a0<\/span>Tri\u00e9pied\u00a0 simple.\u00a0<\/span>Retouche la balance des blancs et contraste sous Lightroom<\/span><\/p>\n[\/et_pb_accordion_item][et_pb_accordion_item title=”prise de vue” open=”on” _builder_version=”3.26.6″]\n

    Photo unique de 3.2s \u00e0 l’A7S (\u00e0 200 iso)\u00a0<\/span>
    Tri\u00e9pied simple<\/span><\/p>\n[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_accordion _builder_version=”3.26.6″][et_pb_accordion_item title=”Christopher” _builder_version=”3.26.6″ open=”on”]\n

    \u00a0le 20\/07 pr\u00e8s de Bayonne.<\/span>
    Pr\u00e9traitement-traitement PixInsight, retouche Polarr.<\/span><\/p>\n[\/et_pb_accordion_item][et_pb_accordion_item title=”prise de vue” open=”off” _builder_version=”3.26.6″]\n

      \n
    • 96x15s = 24 min\u00a0<\/span><\/li>\n
    • Samyang 135mm\u00a0 ouvert \u00e0 f\/2<\/span><\/li>\n
    • Canon 1200d Astrodonis\u00e9 + filtre IDAS LPV<\/span><\/li>\n
    • monture Ioptron SkyTracker V1 sur tr\u00e9pied<\/span><\/li>\n<\/ul>\n[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][et_pb_column type=”1_4″ _builder_version=”3.26.6″][et_pb_accordion _builder_version=”3.26.6″][et_pb_accordion_item title=”St\u00e9phane” _builder_version=”3.26.6″ open=”off”]\n

      25\/07\/2020 \u00e0 Oysonville(28)
      11 images de 18 sec\u00a0 sur un fond de cr\u00e9puscule. Un message de Marie sur Whatsapp venait d’indiquer que l’ISS \u00e9tait pass\u00e9 devant. Je suis sorti voir, et j’ai trouv\u00e9 le cadre sympa.<\/p>\n[\/et_pb_accordion_item][et_pb_accordion_item title=”prise de vue” open=”on” _builder_version=”3.26.6″]\n

        \n
      • 11x18s\u00a0\u00a0<\/span><\/li>\n
      • Samyang 85\u00a0 ouvert \u00e0 f\/1.2 – utilis\u00e9 \u00e0 f\/2<\/span><\/li>\n
      • Canon 16D d\u00e9filtr\u00e9 Astrodon<\/span><\/li>\n
      • monture\u00a0 skywatcher Adventurer<\/span><\/li>\n
      • assemblage avec Siril<\/li>\n
      • traitement final Photoshop et Secator<\/li>\n<\/ul>\n[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"

        Depuis la visite de la grande com\u00e8te d’Hale-Bopp en 1995 on nous promet chaque ann\u00e9e, ou presque, une grande et belle com\u00e8te visible \u00e0 l’oeil nu. Mais il se pourrait bien que cette fois-ci nous ayons droit \u00e0 une bonne surprise. La com\u00e8te “Atlas” qui r\u00e9pond au matricule ATLAS C\/2019 Y4 pr\u00e9sente d\u00e9j\u00e0 une magnitude […]<\/p>\n","protected":false},"author":1,"featured_media":28335,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_s2mail":"yes","footnotes":""},"categories":[3,15],"tags":[],"class_list":["post-28020","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-evenement","category-imagerie","et-has-post-format-content","et_post_format-et-post-format-standard"],"_links":{"self":[{"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/28020"}],"collection":[{"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28020"}],"version-history":[{"count":34,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/28020\/revisions"}],"predecessor-version":[{"id":28351,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/28020\/revisions\/28351"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/28335"}],"wp:attachment":[{"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astrobreuillet.fr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}