I don't mind people using my data or pictures as long as they ask permission.
I was really thrilled that Teleskop Service in Germany used one
of my first test shots of NGC253 with a 10" f/4 ONTC Newt in their
reviews section here:
http://www.teleskop-express.de/shop/...tomizable.html
Then again it was nothing that special & I wasn't using $100k of equipment.
Anyone selling expensive wall prints of your pictures is another story!
That's stealing.
cheers
Allan