Un peu de Dentelles à Ambeyrac ! (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Filamentary nebula · IC 1340 · Lace-work nebula · NGC 6960 · NGC 6992 · NGC 6995 · Network nebula · The star 52Cyg · Veil nebula

Un peu de Dentelles à Ambeyrac !, Corine Yahia (RIGEL33)

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Un peu de Dentelles à Ambeyrac !

Link to TIFF/FITS: https://flic.kr/p/QzAhD5

Powered byPixInsight

Un peu de Dentelles à Ambeyrac !

Link to TIFF/FITS: https://flic.kr/p/QzAhD5

Lors des pré-RAAGSO (du 5 au 7 septembre 2016), nous avons eu un ciel bien dégagé qui m’a permis d’imager. Le lundi, je voulais m’attaquer à un grand champ sur les Dentelles du Cygne, un rémanent de supernova datant d’environ 10.000 ans située dans la constellation estivale du Cygne. Ce fut sans problème que je pus cadrer et faire la mise au point sur mon appareil photo défiltré.

Au traitement, les étoiles de la Voie Lactée étant trop nombreuses et cachant les nébulosités que sont la Grande Dentelle en haut de l’image, le Balai de la Sorcière (Petite Dentelle) en bas de l’image et le Triangle de Pickering juste au-dessus de la pointe du Balai, j’ai fait une réduction d’étoiles qui, ma foi, a bien fonctionné mais me laisse comme une impression de fond du ciel en… dentelle ! (à voir sur la full). J’ai également recadré l’image pour éliminer une vilaine coma sur le coin inférieur droit.

Et, au final, l’image me plaît bien comme ça.

Photo prise le 5 septembre 2016 à Ambeyrac (12) – Canon 350D défiltré, objectif 55-200mm, focale à 55mm, ouvert à F/4.0, sur monture StarAventurer (sans autoguidage ni goto).

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

AAA : Astronomes et Astrographes Amateurs
Sky-Watcher Star Adventurer

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Un peu de Dentelles à Ambeyrac !

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Un peu de Dentelles à Ambeyrac !

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