Iiro's DeepSky Sketches

Name: PK 198-6.1 (Abell 12)Other name: Abell 12
RA: 6h 2.4m DEC: +9° 39'
Constellation: ORI
Type: Planetary nebula
Magnitude: 13.9
Size: 37''
Surface brightness: 11.3
Brightest star: 19.1
Notes: On NW edge OF Mu Ori,star makes ID difficult
Observer: Iiro Sairanen
Location: Härskiänsaari, Ruokolahti, Finland
Date: 17/18.1.2007 21:15
Instrument: Newton 457/2280 mm
Magnification: 457xFilter: O-III
Field: 9'Seeing: 3
Background sky: 3NE lim mag: 6.4
Visuality: IIHeight: 36°
Weather: -1°C, windy, northern lights
Description: Rather bright planetary nebula next to Mu Ori. Easily visible without filters as a hazy disk but O-III shows a faint ring structure. Somewhat elongated in N-S direction.
Updated: 24.1.2007 21:39