Quote:
Originally Posted by anfo
Telescope purchasing is not something that should be rushed into. Like marriage. Buy the wrong one, and your bound to get no action at night.
|
Good advice... very profound! Unfortunately, the collapsible 8" is about as available to me as Angelina Jolie for a wife.
In fact, thanks to all of you for the (prompt) replies... there is an obvious trend here, which is that I should buy the 8" - and the unanimity has made up my mind, so I'll pop into a shop tomorrow and have a look at the SkyWatcher SW680.
Quote:
Originally Posted by Robh
8^2=64, 6^2=36.
64/36~1.8 or nearly twice the light gathering ability.
|
Is this equation to figure out the area of the mirror? Wouldn't it be PI*R^2? I only know basic maths, so it's likely I am missing something of your equation.