gjdonatiello
Sh2-129/Ou4 (Ha-OIII)
Sh2-129/Ou4 (Ha-OIII)
Credit: Giuseppe Donatiello
Discovered by French astro-imager Nicolas Outters, the bipolar shape and emission are consistent with it being a planetary nebula, but its actual distance and origin are unknown.
Recent investigation suggests Ou4 really lies within the emission region SH2-129 some 2,300 light-years away. Consistent with that scenario, the cosmic squid would represent a spectacular outflow of material driven by a triple system of hot, massive stars, cataloged as HR8119, seen near the center of the nebula. If so, this nebula would physically be nearly 50 light-years across.
L-RGB-Halpha-OIII composition
Frames taken with Tair-3S in 2019 and 2020 + 110/250 f/2.2 in 2025. Total exposure 13h. New edit.
Sh2-129/Ou4 (Ha-OIII)
Sh2-129/Ou4 (Ha-OIII)
Credit: Giuseppe Donatiello
Discovered by French astro-imager Nicolas Outters, the bipolar shape and emission are consistent with it being a planetary nebula, but its actual distance and origin are unknown.
Recent investigation suggests Ou4 really lies within the emission region SH2-129 some 2,300 light-years away. Consistent with that scenario, the cosmic squid would represent a spectacular outflow of material driven by a triple system of hot, massive stars, cataloged as HR8119, seen near the center of the nebula. If so, this nebula would physically be nearly 50 light-years across.
L-RGB-Halpha-OIII composition
Frames taken with Tair-3S in 2019 and 2020 + 110/250 f/2.2 in 2025. Total exposure 13h. New edit.