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Originally Posted by Geoff
Hi All,
I heard rumors that a 16 inch DOB will be available soon ie Guan Sheng?.
Has anyone any info on this?
It would be 2.5 times the apature of my 8 inch! 
Cheers
Geoff |
Geoff, aperture (note spelling) increase is by area.
A 16" has 4X the light gathering of an 8".
That's WAY more than a magnitude gain (which is 2.5X) on an 8".
One and two magnitude gains from an 8" base are approximately at 12.5" and 20" apertures.
Be warned, though, that a 16" scope, even a truss tube, is a heavy scope, and difficult to move by yourself.
Don