Object: Galaxies NGC 3917 and NGC 3931          Constell: UMA

RA: 11h 50.8m           Decl: +51° 50'          Epoch: 2000
Mag: 11.7m(v)/14.4m(p)  Size: 5.2x1.3'/1.2x0.9' Type: SAcd:/SA0-

Observer: Jere Kahanpää
Obs. place: Hartola, Finland
Date/Time: 5./6.1.1997, 01.23

Telescope: N 205/1000
Magn: 133x              Filter:
Field: 22'              NE Lim.mag: 6.2m
Background sky: 2       Seeing: 2 
Weather: -20 °C, no Moon.          

Brightness: 4, 5        Alt: 60°
Description:
NGC 3917: Edge-on. About 2.7'x0.9', slightly broader and
brighter in the middle. There is at least one very faint stellar
brightening in the center.

NGC 3931: Small (25''). A mag. 14 stellar core surrounded by a
vF diffuse glow. Faintly visible without averted vision as a
stellr object.