Basic object information
Object name: Mrk 18
Object type: Open cluster
Magnitude: 7.8
Size: 2.0'
Number of stars: 30
Magnitude of brightest star: 9.3

Catalog information
RA (J2000.0): 09h 00m 36.0s
Dec (J2000.0): -48 59' 00"

Constellation: Vela

Observer: Iiro Sairanen
Obs. place: Bootenal Rd, Greenough, Australia
Date/time: 21/22.12.2009 0:20
Telescope: Newton 110/805 mm
Magn: 161x Filter: -
Field: 25' NE Lim.mag: 6.8
SQM: 21.5 (2) Seeing: 3
Visuality: I Height: 50
Weather: +18C, moist, clouds  
A poor but tight group of 10-12 mag stars.