Quote:
Originally Posted by justink
Thanks Steve,
Really stupid question but what's an f5?
The 2 I'm tossing between are both sky watcher full tube telescopes.
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f5 refers to the ratio of focal Length to diameter
Skywatcher 10" is 1200 / 254 = f4.7
Skywatcher 8" is 1200 / 200 = f6
As both are focal length 1200 it appears both optical tubes will be about the same length (approx. 1200) , so similar to transport.
The cheapest price I could (quickly) see for the SW 10" full tube was $949.
Whereas, I could find (at another Sydney store) the SW 10" collapsible for little more ($999).
For $50 I would
definitely consider the collapsible. It will make transport so much easier. (IMHO)
I remember moving an 8" SW Newtonian around and it was awkward.
My 10" SW collapsible was so much easier to move and store.