Exposure data
Telescope: 10″ Lacerta Newton f=1000mm
Camera: SBIG ST8300M
Filters: Baader HαLRGB
Exposure times: Hα: 72x8min L: 12x5min R: 6x5min G: 6x5min B: 6x5min
Exposure time total: 12h 6min
Mount: 10 Micron GM 1000 HPS
Location: Erdweg/Germany (500m)
Date: 2019-04-18+19+20+21
Object data of M 57
Object type: Planetary nebula
Size: 1.2′
Magnitude: 9.7 mag
Constellation: Lyra
Distance: 2300 Ly
