Impressive job Mike,
I think you captured the variations in brightness of the spiral
arms quite well. But I'm suprised you didnt more more white into
the ngc5194's core. I see it as being much brighter than the
arms. I like the embedded stars. Now I'm going to have to look
at M51 because I think I preceive the start brightnesses differently
than you.
This oght to be a great technique for observing faint compact
galaxy groups. (Aftewards one could compare the drawing to DSS
images.)
Great drawing. Damm. There is so much talent in this group.
-ad