Object: SNR?  NGC 6888                          Constell: CYG

RA: 20h 12.0m           Decl: +38° 21.0'        Epoch: 2000
Mag:                    Size: 20'x10'           Type: E/F 1 E F

Observer: Jere Kahanpää
Obs. place: Hartola, Finland
Date/Time: 16./17.10.1993, 22.15

Telescope: N 205/1000
Magn: 40x               Filter: O-III
Field: 83x              NE Lim.mag: 5.6m
Background sky: 3       Seeing: 3 
Weather: Clouds interrupted while plotting the last faint stars
in the field...

Brightness: 4           Alt: 50°
Description: Very interesting, SNR? An almost perfect ellipse.
The N edge is brightest but also thinnest. The edge brightening
grows fainter and broader towards south and almost disappears on
the SE side. The nebulosity within the outer ring is very faint
but still detectable. 

Without the O-III filter only the brightest arc from E to W was
visible. Easy with averted vision but barely held otherwise.