Sh2-308 Gourd Nebula

Gourd Nebula
Sh2-308
2/24/2017/3/10/2017
Canis Major
BrewSky Observatory, Casa Grande, AZ
Takahashi FSQ106ED on Paramount MX, SBig STF8300M Camera/Filter Wheel/STi guider
−10°C
# Exp (min) Filter Bin Net Time (hr)
4 30 HAlpha 1×1 2
6 30 OIII 1×1 3
Total 5 hr
Calibrated in Maxim
Aligned/Stacked/Processed in PixInsight.
  • 5,200 light-years away
  • diameter of 60 light-years
  • 2/3 degree on the sky
  • Bubble age about 70,000 years
  • Wolf-Rayet star at center
    • 20 times Sun mass
    • Very hot star
    • Pre-supernova stage, low hydrogen, high helium