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NGC 6781



 

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NGC 6781 Planetary Nebula. Click image for full size version.

 


Common Name NGC 6781
Formal Name NGC 6781
Date 6/3/2016
Constellation Aquila
Location BrewSky Observatory, Casa Grande, AZ
Equipment Celestron Edge 11 on Paramount, SBig STF8300M Camera/Filter Wheel/STi guider
Temperature -10°C
Exposures
# Exp (sec) Filter Bin Net Time (hr)
13 900 Red 4x4 3.25
24 900 Green 4x4 8
14 900 Blue 4x4 3.5
19 900 HAlpha 4x4 4.75
16 900 OIII 4x4 4
17 900 SII 4x4 4.25
Total 27.75 hrs
Processing This version uses RGB channels. (Synthetic Lum by integrating RGB).
Calibrated in Maxim
Aligned/Stacked/Processed in PixInsight.
Images were done in 4x4 bin, then drizzled in PI.
With HAlpha, only the 12 best frames were used. Something strange about the HAlpha, had a lot of extra blobs.
Notes
  • Distance 2500 ly
  • Radius 1-2 ly
  • Blue-ish star in center created this planetary nebula.