Basic object information

Object name: IRAS 20124+1154
Object type: Planetary nebula
Magnitude: ~16

Catalog information

RA (J2000.0): 20h 14m 51s
Dec (J2000.0): +12 03' 53"

Constellation: Delphinus

Observer: Iiro Sairanen
Obs. place: Härskiänsaari, Ruokolahti, Finland
Date/Time: 13/14.9.2005 23:40

Telescope: Newton 406/1830 mm

Magn: 487x


Field: 6'

NE Lim.mag: 6.5

Background sky: 4

Seeing: 4

Height: 37
Visuality: IV
Weather: +5C

It took a little time to find the right position. The weather wasn't
good: temperature 5 celsius, naked eye limiting magnitude 6.5,
seeing 4 and background sky 4 (scales 0-5, 0 = perfect). I used
magnifications between 146-487x and UHC & O-III filters. The nebula
appears as a faint star.

Short description: Stellar. Occasionally visible with direct vision
and can be held steady with averted vision. Estimated visual
magnitude ~16. Too faint for blinking with O-III. Several faint (16+
mag) background stars twinkled all around the field. Position OK
compared with POSS.