Top stuff, Glen. A reasource that will be well plundered for future Challenge's, I'm sure.
This has sparked an idea for a Challenge theme for some time- the
Dunlop Month. Aussie astronomer, Aussie website. Best thing is that his entire catalogue of objects is within reach of just about all amateur scopes,
. I'll have to do a little more research on the Man too.
Many thanks Glen.