Basic object information
Object name: NGC 6642
Object type: Globular cluster
Magnitude: 8.9
Size: 5.8'
Object classification: IV
Description: pB,pL,iR,gpmbM
Notes: H II 205;* mags 15....

Catalog information
RA (J2000.0): 18h 31m 54.0s
Dec (J2000.0): -23 29' 00"

Constellation: Sagittarius

Observer: Iiro Sairanen
Obs. place: Pico de la Nieve (1540 m), La Palma, Spain
Date/Time: 4/5.4.2008 4:50

Telescope: Newton 110/805 mm

Magn: 230x

Filter:

Field: 21'

NE Lim.mag: 6.8

Background sky: 2

Seeing: 2

Height: 21
Visuality: I
Weather: +9C

A round hazy ball, stellar core in the middle with averted vision.