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Hello Mark, yes, I should have added: 0nce I was able to star test the mirror at the SPSP (original scope was finished @10PM the night before leaving for Wiruna), it clearly required refiguring. Mark had a look at the mirror during the SPSP and took it away with him for some expert TLC followed by recoating with Issac. The secondary is an excellent unit from Protostar. The result has been very pleasing optically and as the mirror is only 38mm thick, cools fairly quickly.
I now have a structure that goes someway to matching the optics.
A photo of the original scope and some additional detail of the whiffletree edge supports with the front baffle removed. The closeup image includes a dummy mirror used during construction.
The 4 front mirror retaining clips are 3mm ply disks that rotate to allow mirror removal. The reason for large ply clips is in the event of a big bounce during transport, the large clips spread the load and the ply has some flex, hopefully preventing any front surface chipping.
Cheers,
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