Iiro's DeepSky Sketches

Name: PK 153+22.1	Other name: Abell 16
RA: 6h 43.9m	DEC: +61° 47'
Constellation: LYN
Type: Planetary nebula
Magnitude: 15.9
Size: 141''
Surface brightness: 16.6
Brightest star: 17.7
Classification: 2b
Observer: Iiro Sairanen
Location: Haakanala, Rautjärvi, Finland
Date: 30/1.10.2011 0:00
Instrument: Newton 457/2280 mm
Magnification: 176x	Filter: UHC/O-III
Field: 23'	Seeing: 4
Background sky: 2	NE lim mag: 6.8
Visuality: V	Height: 48°
Weather: +8°C, windy
Description: An extremely difficult and faint patch which were occasionally visible with optimal averted vision and nebula filters. It took a long time to be sure that it's there.
Updated: 28.2.2013 19:28