Date:
Imaged at:
Equipement:
Optics:
Mount:
Camera:
Exposure:
Luminance:
Red:
Green:
Blue:
H-alpha:
7-09-2007
Grand-Praz
RCO 16" f8.4
Paramount
STL-11000M
Total: 100 min.
Messier:
NGC:
Name:
Constellation:
Distance:
Visual magnitude:
Description:
M 57
6720
Ring Nebula
Lyra
2300 light years
9.0
Face-on spiral galaxy IC1296 4' south-east of M 57