Une dernière dans les Poissons (Corine Yahia (RIGEL33))

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

Une dernière dans les Poissons, Corine Yahia (RIGEL33)

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Une dernière dans les Poissons

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

Powered byPixInsight

Une dernière dans les Poissons

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

Au RAAGSO, à Ambeyrac, je suis revenue sur une galaxie qui m’avait échappé la première fois que je l’avais imagé. Il s’agit de M74 (NGC 628) dans la constellation des Poissons. J’avais loupé la mise au point (MAP). Cette fois, j’avais le temps et je m’appliquais.

Cette galaxie vue de face se situe à 30 millions d’années-lumière de la Terre. Elle a été découverte par l’astronome Pierre Méchain au 18e siècle. Elle a été cataloguée quelques semaines plus tard par Charles Messier qui détermina sa position et lui a attribué le numéro 74. Elle fera partie des premières "Nébuleuses Spirales" reconnues. Sa masse n’est que de 1/5 celle de notre galaxie la Voie Lactée.

Je suis assez contente de ma photo mais je regrette le manque de poses… au vu du nombre de « déchets », ma mise en station (MES) avait dû être malmenée… Aurais-je mis un coup de pied dans le trépied ? C’est possible car je suis fort maladroite. J’ai toutefois réussi le cadrage en incluant l’étoile Eta du Poisson (η Psc) que l’on peut voir à droite.

Cette image sera ma dernière astrophotographie prise à Ambeyrac lors de la 8ème édition des RAAGSO. Vivement les RAAGSO IX !

Photo prise le 8 septembre 2016 à Ambeyrac (12) – Canon 350D (avec correcteur de coma) au foyer d’une Newton 150/750 sur monture Orion Sirius EQ-G (sans autoguidage ni goto).

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

AAA : Astronomes et Astrographes Amateurs

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Astrometry.net job	1501650
PixInsight job	n/a
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Une dernière dans les Poissons

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