Basic object information
Object name: NGC 4151 & NGC 4156
Object type: Galaxies
Magnitude: 10.3 & 13.2
Size: 6.3'x4.5' & 1.3'x1.2'

Catalog information
RA (J2000.0): 12h 10m 30.0s
Dec (J2000.0): +39 24' 00"
Constellation: Canes Venatici

Observer: Iiro Sairanen
Obs. place: Ania, Pirkkala, Finland
Date/Time: 13/14.4.2010 1:25

Telescope: Newton 300/1500 mm

Magn: 214x
Field: 23'
Background sky: 2 (21.1)Visuality: I

Filter: -
NE Lim.mag: 6.5
Seeing: 3
Height: 65

Weather: -2C

NGC 4151 is an interesting galaxy because at first it looked  like a faint haze around a 12 mag star. 7 mm Nagler shows some kind of spiral structure, there are clearly brighter patches on the NW and SE heads. It impossible to say is there a star  involved with a nucleus or is the nucleus stellar. 13 mag NGC 4156 lies on the north side. It's only a small elliptical haze.