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Okay, where was I?....
Focuser Board:
I laminated both the focuser and Telrad boards with 3mm 3-ply plywood strips. I am very happy with the finished result.
See image 1.
Spider:
Significant work was done today on the secondary cage. Firstly, the holes were drilled in the struts and inner tube for the spider. After it was securely mounted, the centre point of the secondary mirror was calculated and this measurement was used to mark the hole in the focuser board for the focuser.
Finally the the spider and secondary mirror were installed for a test fit. The mounting screws were tightened and everything looks good so far.
See image 2.
Installing the focuser:
The first task was to cut a hole in the focuser board. A 70mm diameter hole was drilled. This was enough clearance for the focuser (see image 3).
Because I had purchased a flat mounting plate for the focuser, and constructed a curved focuser board, I needed to modify the mounting design to suit. Firstly, I constructed a flat board out of 3 x 3-ply sheets and glued them together. This gave me an extra flat base to mount the focuser on. Then I chiseled out a flat section in the focuser board to cater for this base (see images 4 & 5).
Once the leveling base was trimmed and ready for gluing, it was put into position and clamped down using the base plate from the focuser (see image 6).
And finally, I test fitted the focuser on its own base plate. Looks snazzy! (see image 7).
(p.s. can someone tell me how to code the text so the images are not seen as "Attached images" at the bottom of the post. I wish to add images at various locations amongst the post instead.)
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