1988/15/09, 09:40 UT, CM=45 Mansfield, Oh, 31-inch f/7 reflector 225x
Seeing 4 of 10. Wilbur Ave. Seeing not very good, front moving in, high cirrus. Dark region around north pole seen. All not too bad, very similar to view in 31-inch... maybe I'm used to this scope?

For the full story, see:
http://ladyandtramp.com/weblog/channels/mars_1988/images/1988-08-15-rdb.jpg