Basic object information
Name: M 6
Type of object: Open cluster
Magnitude: 4.2
Size: 15.0'
Number of stars: 80
Magnitude of brightest star: 6.2
Object classification: III 2 p
Description: Cl,L,iR,lC,st7,10...
Notes: Butterfly cluster,51 members to 10.5 mag incl var* BM Sco

Catalog position for epoch J2000.0
Right ascension: 17h 40m 06.0s
Declination: -32 13' 00"

Constellation: Scorpius

Observer: Iiro Sairanen
Obs. place: Boca de Tauce (1980m above sea level), Tenerife, Spain
Date/Time: 16/17.4.2004 3:20

Telescope: Newton 110/805mm

Magn: 47x


Field: 64'

NE Lim.mag: 6,9

Background sky: 2

Seeing: 3

Height: 19
Visuality: I

Weather: +2C, moist

Butterfly -shape was clearly visible. Several stars between 6-7 mag and more fainter ones...