Basic object information
Object name: NGC 6522
Object type: Globular cluster
Magnitude: 9.9
Size: 9.4'
Object classification: VI
Description: B,pL,R,gvmBM,rrr
Notes: H I 49

Catalog information
RA (J2000.0): 18h 03m 36.0s
Dec (J2000.0): -30 02' 00"

Constellation: Sagittarius

Observer: Iiro Sairanen
Obs. place: Pico de la Nieve (1540 m), La Palma, Spain
Date/Time: 3/4.4.2008 6:15

Telescope: Newton 110/805 mm

Magn: 230x

Filter:

Field: 21'

NE Lim.mag: 6.7

Background sky: 2

Seeing: 3

Height: 30
Visuality: I
Weather: +9C, strong wind

Some stars visible almost in the same line around the core. Pretty difficult to sketch because of stormy wind, flying sand and falling cones...