Messier 6 Butterfly Cluster
Of all Messier objects, M6 is situated at the closest angular distance from the Galactic Center, which is located in the constellation Sagittarius but very near to the 3-constellation edge of Sagittarius, Scorpius and Ophiuchus.

With a little imagination, this does resemble a butterfly in shape. In a 8-inch scope at 49X, the view is magnificent, taking up about half of the field of view. Four of the five brightest stars in the cluster make an almost perfect parallelogram asterism. All four of these stars are within one of the butterfly's wings. At 81X, the cluster takes up the entire field of view, and many more stars are visible (about three dozen).

    Butterfly Cluster
    M6
    NGC 6405
    Other description: Open cluster rich.
    Constellation: Scorpius
    Dreyer description: Cluster, large, irregularly round, little compressed, stars of magnitude 7, 10 and fainter; = M6.
    Magnitude: 4.2
    RA: 17h 40m 23.4s Dec: -32°13'13"
    RA: 17h 40m 06.0s Dec: -32°13'00" (Epoch 2000)
    Azm: 265°09'58" Alt: -42°43'25"
    Rise: 21:08 Transit: 00:27 Set: 03:51
    Size:15.0'
RASC Charlottetown Centre