M 57 Ring Nebula           Click on photo to return to 'Planetary Nebulae'                           Home

M 57    NGC 6720    Ring Nebula in Lyra

Other description: Planetary nebula ring with central star.
Constellation:  Lyr
Dreyer description: A magnificent (or otherwise interesting) object!, ring, bright, pretty large, considerably extended (in Lyra); = M57.
Magnitude:  9.0
RA: 18h 53m 36.0s  Dec: +33°02'00"  (Epoch 2000)
Azm: 77°06'37"  Alt: +40°42'58"
Rise: 16:54  Transit: 01:07  Set: 09:23
Size: 2.5'
Photo Specifications:

16" F/4.87  Newtonian , ST-8E, CFW8     07/02/06    Temp. = -10 C

Filter
Exposure time
Number of exposures
Binning
Luminance
600 sec
1
1x1
Red
300 sec
1
2x2
Green
300 sec
1
2x2
Blue
480 sec
1
2x2
Other








Processing:    MaxIm; align, color combine, DDP