Sh2 129 and 0u4_2AVOX

Sh2 129 + Ou4 Sharpless 129 is an H-alpha emission nebula commonly called the Flying Bat Nebula located in Cepheus very close to the famous IC 1396 (the nebula that contains the Elephant's Trunk). The large blue/green nebula inside it, which is over a degree long, is formally known as Ou4 but is colloquially called the Squid (or Giant Squid) Nebula. Ou4 is remarkable for having been discovered very recently, in 2011, by amateur astronomer Nicolas Outters (hence the "Ou" in "Ou4"). It was originally called a planetary nebula but is now thought to be some kind of bipolar outflow from the bright blue star at its center (which is HR 8119). Captured with: ASI 2600MC camera, AT65Q telescope, NYX 101 mount, OAG with Loadstar 2 cam, 11,5 h with L-Extreme filter and 2 h in L_Pro filter (stars), in bortle 4-5 sky Nea Moudania Greece.