The mirror is transported in a wooden box
constructed by Torus Optics, with its cover in place and the lifting
fixture in place in its hole. Use the stiff plastic sheets to chock the
mirror in place and to orient the lifting fixture in the center of the hole.
To put the mirror into the telescope, follow the following procedure;
reverse it to get the mirror out of the cell and into the box.
- Orient the mirror cell of the telescope
horizontally, and secure it with a stay bar. Be sure the high-side lateral
supports are out of the telescope and, at least, that the push rods for the
low-side lateral supports are retracted. Retract the push rods in the axial
supports so that the support columns are resting on the base of the
axial-support bodies. Be sure the three axial hard points are out of the
telescope.
- Attach the lifting jig to the
mirror-lifting fixture with the four 5/8-inch threaded rods, raise
the mirror out of its cell enough to pull slings under it, put two
9-foot slings around the mirror (through
the hole and through the lifting jig) to catch the mirror if the lifting
fixture breaks. DO NOT LET ANY PART OF YOUR BODY GET UNDER THE MIRROR.
- Lift the mirror with the crane until it
is high enough to clear the edge of the mirror
cell. Move the mirror over the cell. Place the four
wooden mirror guides in place on the side of the cell while centering the
mirror with the crane. Lower the mirror into
the cell until it contacts some of the supports. Raise it up slightly
with the crane to facilitate hooking up the lateral hard points. Attach the
extensions for the three axial hard points to the hard-point pucks, and add
the three axial hard points and their
hold-down springs.
- Adjust the lateral hard points per
proc_lathrdpts and lower mirror onto axial hard points. Adjust the push
rods for the axial support levers to press on the back of the mirror. Lower
the lifting fixture onto the deck of the mirror cell, remove the lifting jig,
and secure the lifting fixture into the telescope with the two 1/2-inch
screws through the back of the cell.
- Store the box for mirror and the lifting jig for future use.
