La troisième du Groupe Local… (Corine Yahia (RIGEL33))

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: M 33 · NGC 598 · Triangulum galaxy

La troisième du Groupe Local…, Corine Yahia (RIGEL33)

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La troisième du Groupe Local…

Link to TIFF/FITS: https://flic.kr/p/MZBnv6

Powered byPixInsight

La troisième du Groupe Local…

Link to TIFF/FITS: https://flic.kr/p/MZBnv6

Un astropote m’ayant prêté un réducteur de focale afin de poursuivre les essais avec ma lunette Skywatcher 102/900 ED, j’ai été ravie de voir que les conditions météo continuaient d’être favorables en cette fin octobre. J’avais choisi une cible photo brillante : la galaxie du Triangle (cataloguée M33 et NGC 598). C'est la troisième galaxie la plus massive du Groupe local après la galaxie d'Andromède et la Voie lactée.

Avec la brume omniprésente depuis plusieurs jours, je ne partais pas pour faire l’image du siècle mais tout simplement tenter de maîtriser cette lunette que je connaissais mal. Faire la mise au point est ce qui m’a pris le plus de temps mais une fois acquise, elle a semblé bien stable tout au long de la soirée. Ne pouvant entrer aucun autre objet du ciel profond dans le cadre, j’ai fignolé le cadrage de façon à ce que la galaxie soit en haut à droite, donnant ainsi une impression de profondeur et de mouvement. Le brouillard a interrompu la séance, mais j’avais assez de poses pour avoir une image « montrable » bien qu’on aperçoit les effets de cette brume sur le traitement.

Au final, tout a bien fonctionné et je suis très satisfaite du résultat ;)

Photo prise le 30 octobre 2016 à Saucats (33) – Canon 350D (avec réducteur/aplanisseur) au foyer d'une lunette 102/900 ED sur monture Orion Sirius EQ-G motorisé (sans autoguidage ni goto).

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

AAA : Astronomes et Astrographes Amateurs

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Astrometry.net job	1312047
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