Il s'agit de la grande et brillante grappe d'étoiles globulaires NGC 6397 à Ara en dessous du Scorpion et juste au sud de la voie Lactée. C'est l'un des plus beaux globulaires i.

• Contributeur: Alan Dyer / VWPics / Alamy Banque D'Images
• ID de l’image: 2XCRY1R
• Taille du fichier: 86,1 MB (7,7 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 6720 x 4480 px | 56,9 x 37,9 cm | 22,4 x 14,9 inches | 300dpi
• Date de la prise de vue: 9 mars 2024

Informations supplémentaires

This is the large and bright globular star cluster NGC 6397 in Ara below Scorpius and just south of the Milky Way. It is one of the finest globulars in the sky but appears small here due to the wide 7.5º by 5º field and just 270mm of focal length used. But even so, the cluster is resolved, and the framing shows it in context with yellow Beta Arae and blue Gamma Arae below. They form a very attractive wide binocular double star, though they are unrelated and hundreds of light years apart. This is a stack of 8 x 5 minute exposures with the Sharpstar 61mm refractor at f/4.4 with its Reducer/Flattener, and with the modified Canon R at ISO 800. No filter was used here. On the Astro-Physics AP400 mount autoguided with the MGEN3 autoguider. Taken from Australia in March 2024.

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