M6
The Butterfly Cluster (cataloged as Messier 6 and as NGC 6405) is an open cluster of stars in the southern constellation of Scorpius. It is 3.5° to the northwest of Messier 7, both north of the tail of Scorpius. The first astronomer to record the Butterfly Cluster's existence was Giovanni Battista Hodierna in 1654. It's estimates distance is 1,590 light-years. 120 stars, ranging down to visual magnitude 15.1, have been identified as most likely cluster members. Most of the bright stars in this cluster are hot, blue B-type stars but the brightest member is a K-type orange giant star, BM Scorpii, which contrasts sharply with its blue neighbours in photographs.
Optic: Astro-Physics 127 Starfire
Mount: Celestron CGE PRO
Autoguider: ZWO ASI290MM mini, Phd guiding
Camera: QSI 583wsg
Filters: 31mm unmounted Astrodon gen. 2
Frames: RGB 3X420sec each Bin1 -30°
Processing: Pixinsight, Photoshop, Maxim
APT automation
M6
The Butterfly Cluster (cataloged as Messier 6 and as NGC 6405) is an open cluster of stars in the southern constellation of Scorpius. It is 3.5° to the northwest of Messier 7, both north of the tail of Scorpius. The first astronomer to record the Butterfly Cluster's existence was Giovanni Battista Hodierna in 1654. It's estimates distance is 1,590 light-years. 120 stars, ranging down to visual magnitude 15.1, have been identified as most likely cluster members. Most of the bright stars in this cluster are hot, blue B-type stars but the brightest member is a K-type orange giant star, BM Scorpii, which contrasts sharply with its blue neighbours in photographs.
Optic: Astro-Physics 127 Starfire
Mount: Celestron CGE PRO
Autoguider: ZWO ASI290MM mini, Phd guiding
Camera: QSI 583wsg
Filters: 31mm unmounted Astrodon gen. 2
Frames: RGB 3X420sec each Bin1 -30°
Processing: Pixinsight, Photoshop, Maxim
APT automation