Basic object information

Object name: NGC 5053
Object type: Globular cluster
Magnitude: 9.0
Size: 10.0'
Object classification: XI
Description: Cl,vF,pL,iR,vgbM,st 15
Notes: H VI 7;Low surf brightness;1 deg sf M 53

Catalog information

RA (J2000.0): 13h 16m 30.0s
Dec (J2000.0): +17 42' 00"

Constellation: Coma Berenices

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 6/7.4.2005 1:05

Telescope: Newton 406/1830 mm

Magn: 146x

Filter:

Field: 21'

NE Lim.mag: 6.6

Background sky: 3

Seeing: 3

Height: 46
Visuality: III
Weather: -2C

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.