Ma jolie loupée dans les Poissons (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Pisces (Psc) · Contains: M 74 · NGC 628

Ma jolie loupée dans les Poissons, Corine Yahia (RIGEL33)

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Ma jolie loupée dans les Poissons

Link to TIFF/FITS: https://flic.kr/p/FciA6g

Le 14 novembre 2015, lors d'une sortie officielle de notre club, nous avons eu une soirée en demi-teinte… un début brumeux, puis un dégagement inespéré mais suivi très vite d'un bâchage total du ciel. Malgré cela, j'avais décidé de pointer une galaxie dans la constellation des Poissons : M74. Un bel univers-île vue de face, repéré par Pierre Méchain et, par la suite, catalogué par Charles Messier.

Trop pressée à la mise en place à cause de la météo incertaine, la mise en station fut un peu bâclée. Du coup, les étoiles ne sont pas bien rondes malgré un temps de pose unitaire réduit à 90 secondes. Les bords de champ étaient une telle misère que j'ai cropé l'image. J'ai même oublié de remettre mon APN défiltré au foyer, utilisant le second non défiltré.

Bref, sur les 2 h 30 de temps clément, je n'ai pu récupérer qu'1 h 15 de potable… Après traitement, l'image reste montrable… donc je vous la montre. Elle restera ma jolie loupée dans les Poissons ;)

Photo prise le 14 novembre 2015 à Saucats (33) – Canon 350D non défiltré (avec correcteur de coma) au foyer d'un Newton 150/750 sur monture Orion Sirius EQ-G motorisé (sans autoguidage ni goto).

50 poses de 90s – 15 DOF – ISO 800 – IRIS et Toshop.

AAA : Astronomes et Astrographes Amateurs

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Status	Basic success
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Astrometry.net job	1143297
PixInsight job	n/a
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