[APBeta] Galaxy position angle

[Paul Rodman]

If a catalogue has a defined position angle for a galaxy then it is drawn oriented at that position angle in the FoV. If it doesn't have a position angle defined, it is shown with position angle = 0. It would seem that (a) this causes confusion, and (b) a method of indicating that a galaxy does not have a position angle defined should be introduced. 

Any ideas?

Paul R.