Basic object information
Object name: NGC 6309 Popular name: Box Nebula
Object type: Planetary nebula
Magnitude: 11.5
Size: 19.0"
Magnitude of central star: 16.3
Object classification: 3b(6)
Description: B,S,bet 2*v nr

Catalog information
RA (J2000.0): 17h 14m 06.0s
Dec (J2000.0): -12 55' 00"

Constellation: Ophiuchus

Observer: Iiro Sairanen
Obs. place: Pico de la Nieve (1540 m), La Palma, Spain
Date/Time: 4/5.4.2008 3:55

Telescope: Newton 110/805 mm

Magn: 230x


Field: 21'

NE Lim.mag: 6.8

Background sky: 2

Seeing: 2

Height: 33
Visuality: I
Weather: +9C

The Box Nebula. Pretty bright NW-SE oriented box-shaped nebula, a weak brightening on the NW end. A 12 mag star lies on the north side.