Maybe some use, scope layouts?

[Jim!]

Whilst digging around for my next project I found an Excel worksheet on the Oldham Optical site.

Creates layouts of Newtonians, folded Newts, Cassegrain's, fields of view and airy disk sizes.

Could be rather useful, if ya like that sort of thing

Attachment is a .zip that contains an Excel file. There are no macros on the sheet, just a few equaitions.

All credit to Oldham Optical, I just wish they wouldn't bury useful stuff on their site!

Oldham Optical DIY Scope.zip

[Jim!]

After a bit of hunting, I found where I got it from. Look under "Design" on the Oldham Optical site.