Object: Open cluster NGC 1857                   Constell: AUR

RA: 05h 20.2m           Decl: +39° 21'          Epoch: 2000
Mag: 7m                 Size: 6'                Type: II 2 m

Observer: Jere Kahanpää
Obs. place: Hartola, Finland
Date/Time: 30./31.12.1996, 21.10

Telescope: N 205/1000
Magn: 80x               Filter:
Field: 37'              NE Lim.mag: 6.2m - 5.8m
Background sky: 2       Seeing: 3 
Weather: -20 °C, no Moon. Occasional clouds

Brightness: 3-4         Alt: 60°
Description: A cluster of faint (12m and fainter) stars around a
reddish mag. 7 central star. Diameter about 8'. Quite sharp
edges, but a trail of faint stars runs towards N from the N
side. A very bright group of stars in situated slightly outside
the field towards N. The general field is very rich at 40x and
several smaller condensations are visible (like the one near the
triple star on the N edge). None of these could be confirmed to
be Czernik 20, the other OC in the field.