Object: Planetary nebula JnEr 1 (PK164+31.1)    Constell: LYN

RA: 07h 57.9m           Decl: +53° 25'          Epoch: 2000
Mag: 12.1m (v)          Size: 380''             Type: 4

Observer: Jere Kahanpää
Obs. place: Hartola, Finland
Date/Time: 5./6.1.1997, 23.55

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

Brightness: 5           Alt: 75°
Description: A very faint glow but well defined with an O-III
filter (invisible without it). Exact position in the field
unsure as most stars are not visible with the filter and the
neby is visible less than 50% of the time. Requires good
adaption. Round. The ring structure is quite easy with two
brightenings SW and NW. The ring cannot be traced around the
rim: S and N edges are fainter and more diffuse.