Gyulbudaghian's Nebula (HH215)
Gyulbudaghian's Nebula (HH215) is a Herbig-Haro object – a variable bipolar nebula generated by shock waves from a contracting protostar – in the constellation Cepheus. At the apex of its faint, fan-like shape lies the variable star PV Cephei, which provides the energy that illuminates the nebula. HH 215 resembles the classic variable bipolar nebula NGC 2261 ( Hubble's Variable Nebula) as it varies in shape and brightness and its spectrum is in a state of continual change.
The name "Gyulbudaghian's Nebula" (pronounced gyool-boo-DAH-ghee-an) originates from a paper published in Soviet Astronomy Letters (1977).