[Paul Haese]

Today I decided to install the optics from the RC12 into the new truss that I have taken possession recently. I drove down the observatory and picked up the scope and brought it home for the disassembly and reassembly.

When you look at the truss you will see the rear of the scope has 4 truss blocks screwed onto back plate. Unscrew the screws as shown in the first image. Remember the tension of the screws as you loosen them. (pic 1)

Next unscrew the bolts that hold the dove tails onto the back plate. There are 4 bolts to remove. (pic 2)

Once you have done that the rear assembly including the mirror assembly come away from the truss. (pic 3)

If you intend on using a complete mirror cell from another scope remove the mirror cell by unscrewing the bolts that hold the mirror in place. Those 3 bolts are located in the middle of the mirror back and are used to collimate the primary. The large screws are the ones you want to unscrew. Not the smaller locking screws. (pic 4)

Now remove the old mirror cell from the ali tube of the RC12. (pic 5)

Pull the whole assembly out and be careful of the baffle which is really long. (pic 6)

Remove the mirror cell from the outer casing by undoing the bolts that are used for collimation on that scope. (pic 7)

Sit the new back assembly on a flat surface and then sit the mirror cell with mirror and baffle on top of the new back assembly. (pic 8)