I've stumbled upon this excellent article by Barbara Wilson!
http://spacsun.rice.edu/~has/200108gsw.pdf (scroll down)
The sketching part is very inspiring as well as I had no idea such a highly skilled observer's first observation of Mars was to put it in her own words "disappointing" :-(! Also, I had no idea where the "magical" 42mm circle comes from; thanks to Barbara's article I know now :-).
Ron B[ee]
http://spacsun.rice.edu/~has/200108gsw.pdf (scroll down)
The sketching part is very inspiring as well as I had no idea such a highly skilled observer's first observation of Mars was to put it in her own words "disappointing" :-(! Also, I had no idea where the "magical" 42mm circle comes from; thanks to Barbara's article I know now :-).
Ron B[ee]
