Basic object information
Object name: NGC 4490
Object type: Galaxy
Magnitude: 9.5
Size: 6.4'x3.2'
Position angle: 125
Object classification: SBcd
Description: vB,vL,mE130,r,sf of 2
Notes: H I 198;disrupted;P w NGC 4485 @ 3.5'

Catalog information
RA (J2000.0): 12h 30m 36.0s
Dec (J2000.0): +41 39' 00"

Constellation: Canes Venatici

Observer: Iiro Sairanen
Obs. place: NOT (2390 m), La Palma, Spain
Date/Time: 4/5.4.2008 5:20

Telescope: Newton 110/805 mm

Magn: 115x

Filter:

Field: 43'

NE Lim.mag: 7.2

Background sky: 1

Seeing: 3

Height: 70
Visuality: I
Weather: +4C, huminidy 40%, wind 10 m/s

SN2008ax appears as a faint star on the SE-side of the core. Galaxy itself is pretty bright and I was able to see a northern spiral arm quite easily.