Iiro's DeepSky Sketches

Name: Messier 22Other name: NGC 6656
RA: 18h 36.4m DEC: -23° 54'
Constellation: SGR
Type: Globular cluster
Magnitude: 5.1
Size: 24.0'
Surface brightness: 11
Classification: VII
Description: vB,vL,R,vRi,vmC
Notes: Stars mags 11...,one of finest globs
Observer: Iiro Sairanen
Location: Base del Teide (2280m), Tenerife, Spain
Date: 18/19.4.2004 4:35
Instrument: Newton 110/805 mm
Magnification: 127xFilter: -
Field: 24'Seeing: 3
Background sky: 2NE lim mag: 7
Visuality: IHeight: 29°
Weather: +9°C, dry and good
Description: A massive globular cluster. Individual stars down to nucleus were visible. Brightenings on the W and E side of the core which is bright and elliptical in N-W direction.
Updated: 15.5.2004 13:35