G day Duncan,
plus 1 for an 8" dob
my experience has been very different to Bill's.
also see here for dobson photography
http://www.iceinspace.com.au/forum/s...d.php?t=156183
may i suggest this thread be 'sticky' as too often newbies are told dobs can't do AP
or for more see sn1987a's current posts - Barry has monster scopes but his technique can be used on 8" for great hapi snaps or vids.
Regards, L