Quote:
Originally Posted by Jowel
The other day I visited a telescope store and compared the sizes of an 8 inch and a 10 inch SkyWatcher dobsonian.
|
The 10" gathers about 56% more light than the 8", I think you are correct about their portability being fairly similar, though that depends a lot on the individual lifting the scope, will the salesman let you test lift them in the shop
. If the price per square inch seems fair, and you are happy to pay extra for it, it's probably a good idea to go for the 10".
The differences in focal length won't mean a lot in practice (at least to most people) The 8" would be f6 and the 10" f5. This means that for any given eyepiece the magnification would be a bit higher on the 8" scope, but the brightness would be lower. The scopes probably come with eyepieces to match their focal lengths.