Re: [Utah-astronomy] Question on focus

Canopus56 wrote:

Suiter did a good article on the relationship between the size of the sweet spot to focal ratio in _Sky & Telescope_ in the late 1980s. I could not easily locate my copy but the article is referenced in the bibliography of Suiter's _Star Testing_ book.

If anyone is interested, I have S&T going back to the first issue in my library. If y'all can come up with the issue the article is in I'd be happy to bring it to the next SLAS meeting or y'all could come out to my place to have a look. Patrick