[pmrid (Peter)]

I have had an old DK lying around the shed for years now - waiting the return of some motivation to do something with it.

The recent post linking to the Lazzarotti Optics scopes was the tipping point for me and, as it happens, at least one other demented DIYer ( who I haven't named here in case he wants to distance himself from this insanity). So we now seem to have a serious project under way.

I have the primary and secondary mirrors and together they create a f22 system. Great for lunar/planetary stuff. So now, we begin the design phase.

I want to make best use of the bits I already have, so I am adapting the Lazzarotti concept around that. Since I have a good baffle tube assembly plus a well-machined flange to connect it to a focuser, I decided to start the design process there. As part of that I am on the scrounge - does anyone have an original GSO focuser they have taken off a GSO RC6 or RC8. (or any other focuser with a 90 mm flange). Over the years I must have replaced 3 or 4 of these but never had the sense to keep the old ones.

I decided that the axis of the baffle tube/focuser would need to be capable of adjustment in addition to and independently of the primary mirror. Hence this design.

Here's a rough schematic.

Peter