Quote:
|
Originally Posted by Stu
2. Everyone had talked up dobs on this site, so I had my hopes up. The first look though a dob (10-12") shocked me somewhat because the really bright stars looked larger in size than the smaller ones and they had huge diffraction spikes. I thought you only got spikes in photo's. 
). |
my dobs dont get diff spikes - curved spider made of a bit of tin, aquirium silicon/ small piece of pvc piping and some nuts and bolts in one (lose a little contrast thats all - smears light a tiny fraction - no biggie ) - and single vane in the other (i think in bad seeing looking hard or out of focus it has a single one maybe, cant remember) - seen many gorgeous star views thru them anyway) not an expensive or hard conversion for any sturdy solid tubed long fl newt - the problems of needing constant adjustment are with fast newts
ppl talk up dobs as mainly as a cheaper but equal alternative to an expensive scope when your on a budget - the familiar 'bang for your buck' theme - specially if your one of the apparently (so i am told) dying breed of visual viewers? - a 400 hundred year tradition
how much was your TV 4"? at least 2000 au - at a rough guess - compared to a GS 8" for what is it? 400 -500 au? different category - your in the higher end quality dob/reflector range at that price - maybe 16" GS even?
Try $7000. 
thanks Steve - should of known - forgot it was an APO - its not in the title thats seems unusual? 
