This reflection nebula is named Gyulbudaghian's Nebel (GM 1-29) after the armenian astronomer Armen Gyul'budaghian who discovered it with Tigran Yu in 1977.
Observations show, that this nebula changes its appearance in rather short terms for astronomical objects, we are talking about years and even months.
These fast fluctuations in appearance are caused by the variable star PV Cephei inside the molecular cloud. Its intense radiation manages to poke a "hole" into the dense matter and so illuminates a small portion of the outer regions.
As the young star is most likely surrounded by a rotating aggregation disc, the emitted light is constantly changing and so is the appearance of the reflection nebula.