w1800 20161030 M27 A7Ra ISO3200 10x120s

 
ObjectM27 or NGC 6853 Dumbbell Nebula
Constellation:  
Position: RA 19h 59m 36.340s DEC +22° 43′ 16.09″
Apparent Size: 8.0 × 5.6 arcmin
Apparent Magnitude/surface brightness: +7.5 / +11.2
Distance (average) 1360 ly
  
Photo Datas 
Date 30.10.2016, 20:30 UTC
Location Knottenried/Oberallgäu, 1002m ASL
GPS: 47°36’13“ N, 10°11’24“ E
Sky darkness SQM-L Zenit 20.95mag/sqrsec, Object 20.85mag/sqrsec
Ground Temp./Air Pressure -2.0°C /1035mbar
Thermal sky temp./weather  -52.1°C Zenit
Seeing  6/10
Telescope Meade 8" SC ACF 2032mm f/10.0
Camera Sony A7Ra mod @ T sensor=6.5°C
Expose frames ISO 3200, RAW 11x120s, 3 darks, 2 flats
Total expose
22 min.
Filter no
Mount HPS 10Micron GM 3000
Guiding Cam no
Software DSS 3.3.4, Photoshop CC
Remarks Front lens totally covered by dew drops because forgotten the dew shield!

C 2016 Peter Cerveny