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Old 26-10-2007, 04:30 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,820
Quote:
Originally Posted by bird View Post
Excellent result Dennis!

The main advantage of a larger aperture as I see it is to allow shorter shutter speeds on the camera, giving you more usable frames. I think that's more benefitial that the resolving increase that comes with the larger aperture.

I'm thinking seriously about increasing from my 13.1" to a 15", not for the extra 14% resolving increase, but rather for the 31% increase in light, and so I can run shutter speeds 31% shorter than I do now...

cheers, Bird
Thanks Anthony – will that be a Newtonian like your current OTA? If so, will it be custom made or off the shelf?

Cheers

Dennis

PS – I am eagerly awaiting your upcoming planetary posts with the prospective 15”
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