Hello Celsom, I don't know if I can answer your question but, please send the picture and I'll take a look. Thanks, Wayne celsom-w wrote: > Observing the PK329-2.2 Planetary Nebula on the Digital Sky Survey I > found what seems to be a failure in a photograph or a thread of gas in > the surroundings of the nebula. The thread, however seems to have a > center on the nebula. Would any of you know what is this object? ...