Re: [M]: LX200 8" vs 10", f/10 vs f/6
| Subject: | Re: [M]: LX200 8" vs 10", f/10 vs f/6 |
| From: | Gene Horr |
| Date: | Wed Sep 13 07:45:51 2000 |
John Ruthroff wrote:
> ... THEN, make your decision
> based on being able to match CCD camera pixel size to telescope focal length.
One quick note - since the most popular CCD cameras have pixel sizes of 9u or
larger this really isnt an issue. Its only when you start getting above 3m
FL for long exposures that you even begin to start materially oversampling.
The 8" and 10" units at f/10 are right about perfect for 9u pixels under decent
seeing conditions.
Gene Horr
genehorr@texas.net
> ... THEN, make your decision
> based on being able to match CCD camera pixel size to telescope focal length.
One quick note - since the most popular CCD cameras have pixel sizes of 9u or
larger this really isnt an issue. Its only when you start getting above 3m
FL for long exposures that you even begin to start materially oversampling.
The 8" and 10" units at f/10 are right about perfect for 9u pixels under decent
seeing conditions.
Gene Horr
genehorr@texas.net
