# Removing MagAO-X From The Telescope¶

This procedure describes how to remove the MagAO-X instrument on the Magellan Clay Telescope.

Estimate Time to Complete: 2 hours

This document can be dowloaded as pdf:

Telescope Removal Proecedure

## Initial Conditions¶

• [ ] Instrument on Magellan Clay Nasmyth Platform, operating.

## Preparations¶

• [ ] Shutdown MagAO-X

• [ ] Turn off table legs and remove air connection

• [ ] Remove all cables

• See detailed procedure for removing 2K DM cables

• [ ] Electronics Rack

• [ ] Ensure that roll-out shelves are restrained

• [ ] Close and lock doors

• [ ] Tape keys down

• [ ] Instrument

• [ ] Remove eyepiece

• [ ] Remove bumpers and pusher hardware

• [ ] Turn off blower, and remove hose

• [ ] Tape over any exposed holes (from cables, etc)

• [ ] Secure any loose cables

• [ ] Shrink wrap the instrument

• [ ] Install solar blanked over shrink wrap

• [ ] Cart and Rigging

• [ ] Verify all cart hardware is in-hand

• [ ] Verify two wire harnesses are in hand

• [ ] Partially assemble cart, leaving one long side off

• [ ] Store cart out of the way so table can roll into unpacking area

## Rig Onto Cart¶

• [ ] Position the telescope so that the elevator has access to the NASE platform

• [ ] Lower table legs onto the casters by turning the 16 leveling bolts, and remove the metal pads

• [ ] Roll the instrument away from the telescope NOTE: At least 4 people required, 2 to push, 2 to hold the cleanroom sides open

• [ ] Move the cart, currently with 3 sides, around the legs

• CAUTION: be careful to not bump the legs with the cart

• [ ] Attach the 4th side of the cart

• [ ] Ensure that the 8 large bolts on the cart are snug but not tight

• [ ] Attach the lifting wire-harnass to each side of the cart

• [ ] Attach the load spreader with straight extensions to the crane, using a crane scale

• [ ] Place the load spreader in the center position (the cart is symmetric)

• [ ] Lift the load spreader, and position it over the instrument

• [ ] Being careful to not bump the instrument, lower the load spreader and attach the lifting harnass D rings. Use 2x shackles to extend the length to reach the cart on the floor.

Lifting harnasses attached with shackle extensions

• [ ] Position a person at each corner of the cart

CAUTION: Do not allow the cart to bump the legs or the table uncontrolled

• [ ] Slowly lift the cart (320 lbs) until it is touching the bottom of the table

The cart being lifted to the bottom of the table.

• [ ] Install the 8 bolts attaching the cart to the table. Loosen bolts on the cart as needed.

• [ ] Once the cart is bolted to the table bottom, while 320 lbs is still on the crane, tighten all cart bolts. Do not over-tighten, make 1/4 turn after the washers are no longer free. This is to avoid excessive stress on the table.

• [ ] Install the triangle stabilizing ropes between the crane hook and the lifting fixture IAW the below figure. Tighten, but do not cause them to pick the load.

*The triangle stabilizing ropes should be tight, but not become the lifting point for the load.

CAUTION: be sure that the load spread does not hit the cart when being repositioned.

• [ ] Reposition the load spreader center to the instrument + cart position marked on it.

• [ ] Ensure that there is room to move the legs out from under the table, opening the garage door into the cleanroom if necessary.

• [ ] Position a person at each corner of the cart to stabilize it during the lift.

• [ ] Position two people to remove the legs from under the table

• [ ] Lift the table off the legs. The weight of the table + cart is 1920 lbs

• [ ] Move the legs out from under the table.

The cart and instrument ready to be set down on the wheels, with legs out of the way.

• [ ] Set the cart down on its wheels.

• [ ] Move MagAO-X onto the elevator, and remove from the dome

• [ ] When cart is on concrete outside Clay, move very slowly to avoid excessive vibration

## Transport MagAO-X To The Clean room¶

• [ ] Ensure that the lift gate at the summit has been adjusted for slow smooth operation as is done for the asm

• [ ] Push MagAO-X onto the lift-gate

• [ ] Raise the lift-gate to the height of the flatbed truck

• [ ] Move MagAO-X onto the truck, using the come-along

MagAO-X will be loaded at the telescope using the lift gate, adjusted for slow operation as it is for the ASM.

• [ ] Secure the instrument by strapping the cart down at 4 points as illustrated in the below figure.

MagAO-X will be strapped to the Isuzu similarly to how the ASM is transported.

• [ ] Slowly drive the truck to the cleanroom

• [ ] Back the flatbed truck up to the lift gate.

• [ ] Next, using the come-along, carefully move MagAO-X onto the lift gate.

• [ ] If the legs were not moved, return to the with the flatbed and move the legs to the telescope.

## Transport Electronics¶

• [ ] remove the earthquake bar

• [ ] Move the rack to the lift gate, and load it on the pickup.

• [ ] place foam between the rack side and the truck to protect cable connectors

The electronics rack has many delicate connectors on the side.

• [ ] strap the rack securely to the truck

The rack on a truck for transport.

• [ ] drive the truck to the cleanroom

• [ ] unload the rack using the lift gate

## Remove AOC from Control Room¶

• [ ] power down AOC

• [ ] remove monitors and pack

• [ ] move AOC to cleanroom.