Une Rose entre les nuages (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: Christmas Tree cluster · Cone nebula · IC 2169 · IC 448 · NGC 2239 · NGC 2244 · NGC 2252 · NGC 2264 · Rosette nebula · The star 12Mon · The star 13Mon · The star 15Mon · The star 75Ori · The star εMon

Une Rose entre les nuages, Corine Yahia (RIGEL33)

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Une Rose entre les nuages

Link to TIFF/FITS: https://flic.kr/p/TotwdH

Powered byPixInsight

Une Rose entre les nuages

Link to TIFF/FITS: https://flic.kr/p/TotwdH

Le même soir où j’ai imagé la comète 41P/Tuttle à Allons, j’avais installé mon second 350D avec mon objectif 90-300mm sur la petite monture de voyage. J’avais en tête la Rose céleste, autrement appelé la nébuleuse de la Rosette ou NGC 2237. Elle était déjà bien basse quand je la pointais et les passages nuageux ne facilitaient pas la mise au point et le cadrage. Mais je suis têtue et je voulais voir ce que je pouvais tirer de cet objet avec un ciel aussi incertain. Dès que je la vis dans le cadre, je n’attendis pas plus longtemps et lançais les poses.

La nébuleuse de la Rosette est un vaste nuage de gaz et de poussières situé dans la constellation de la Licorne à environ 5.000 années-lumière. Elle doit sont nom populaire de Rosette a sa forme circulaire la faisant ressembler à une fleur. Au centre, se trouve un amas ouvert d'étoiles jeunes connu sous le nom de NGC 2244.

On peut voir la Rosette au milieu de l’image cernée par les nébulosités. En haut à droite on distingue l’amas Arbre de Noël qui comprend la nébuleuse du Cône, l’ensemble étant catalogué sous NCG 2264. Amputant un bon tiers de l’image en bas à gauche, ce sont les nuages de notre atmosphère terrestre qui avaient envahi progressivement mon champ télescopique. L’ensemble donne un tableau assez coloré. Cette image est plutôt prometteuse et il me tarde de pouvoir revenir sur cet objet et de, cette fois, soigner un peu mieux le cadrage et poser beaucoup plus longtemps ;)

Photo prise le 23 mars 2017 à Allons (47) – Canon 350D défiltré, objectif 90-300mm, focale à 90mm, ouvert à F/4.5, sur monture StarAventurer (sans autoguidage ni goto).

19 poses de 2 mn – 15 DOF – ISO 800 – IRIS et Toshop.

AAA : Astronomes et Astrographes Amateurs

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