Iiro's DeepSky Sketches

Name: PK 233-16.1 (Abell 15)Other name: Abell 15
RA: 6h 27m DEC: -25° 23'
Constellation: CMA
Type: Planetary nebula
Magnitude: 16.3
Size: 34''
Surface brightness: 14.6
Brightest star: 15.4
Classification: 4
Observer: Iiro Sairanen
Location: Wicherina, Greenough, Australia
Date: 10/11.1.2010 21:35
Instrument: Newton 254/1200 mm
Magnification: 171xFilter: O-III
Field: 29'Seeing: 3
Background sky: 1NE lim mag: 7.5
Visuality: VHeight: 51°
Weather: +16°C, windy
Description: An extremely faint roundish disk which is visible about 10% of time with an O-III filter and optimal averted vision. It took time to be sure that there is something at all.
Updated: 15.9.2010 21:35