Quote:
Originally Posted by man on the moon
thankyou for the welcome asimov,
How deep can i go with each? I don't want to go as far as supernova searches, but would like to see most of the objects in the messier list, as well as most of the 100 brightest galaxies. I 'll probably go for a GSO dob rather than a lightbidge, because they are cheaper and i've only heard good things about them. Astrophotagraphy sounds fun, so this is why i am thinking about the 10 inchers, and it is just so much easier to let it fing the objects you tell it to find, rather than finding them yourself.I don't mind having to fing them though, as i will get to know the sky better, but it may get annoying for the fainter objects.
thanks for replying. 
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You can see all the messier objects with an 80mm refractor ( some have done it with smaller instruments). Your 200mm Dob will show you thousands of DSO's and a 300mm instrument will probably show all NGC objects plus many more.
clear skies