|
Tentative design concept:
Serrurier Truss using a hex box centre cage with three open sides and diaphragm bracing at each end. Some internal bracing for dovetail.
Trefoil mirror cell base and 6 struts each for mirror cell and UTA. ( the 10" is 8 struts ).
UTA is probably a two ring possibly wire braced secondary ( a la SkyViking ). Still pondering on that bit. Some Dob hardware is coming with it, spider ?
Struts will finish with no angle brackets, I'll use embedded threaded rod at each end and holes in the trefoil and lower UTA ring with nuts and washers.
Low focusser height, this is for imaging only. Zero intrusion of focusser tube into light path
Therefore minimal weight and extremely rigid. Accuracy in build will be paramount as there will be almost no adjustment at strut ends.
The 'Russell/Nankivell 8F8' project is officially launched.
Comments\ideas welcomed.
|