Iiro's DeepSky Sketches

Name: NGC 5053Other name: GCL 23
RA: 13h 16.5m DEC: +17° 42'
Constellation: COM
Type: Globular cluster
Magnitude: 9.8
Size: 8.9'
Classification: XI
Description: Cl,vF,pL,iR,vgbM,st 15
Notes: H VI 7,Low surf brightness,1 deg sf M 53
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 6/7.4.2005 1:05
Instrument: Newton 406/1830 mm
Magnification: 146xFilter: -
Field: 21'Seeing: 3
Background sky: 3NE lim mag: 6.6
Visuality: IIIHeight: 46°
Weather: -2°C
Description: A large globular cluster which has a low surface brightness. At first view this looked like an open cluster but after careful sweeping I was able to detach a faint background glow. Several stars are visible, the center is somewhat brighter and there are brightenings on the east and west side of the core.
Updated: 29.4.2005 19:36