Other assembly photos


The remaining shots here show the installation of the tertiary holder, which was welded from 3/4" steel tubing, and protrudes through the primary mirror.  A steel washer is welded to the tubing, and three screws connect the washer to a 4" plexiglass disk, to which the diagonal holder is connected.

tertiary1 tertiary 2

That's about it.  Also, note in this photo the focuser "platform", which ended up being shortened to position the focal plane properly.  Also, the bare aluminum ends of the poles have been painted flat black.  Later, a ring baffle will be added in front of the tertiary mirror.

Back to 12.5" Cass. page...