More progress at Site #2

# Telescopes

schedule 2017-09-18
Matthew Lehner

Today we did a dry run of the primary mirror cell installation. With no mirror installed, we brought the mirror cell up to the observing floor and installed it on the bottom of the telescope. We then removed it and lowered it back down to the ground floor. The test was successful, and it was a useful exercise since we now have a better idea of what we will be doing when we do the installation for real.

Here are a couple photos.

Mirror cell ready for lifting.


On its way up.


Up through the hatch.


Gantry crane rolled over to the lift table.


Mirror cell set down on the lift table.


Lifted up to bottom of center section.


Successfully bolted into place.


We also brought the secondary mirror up to the observing floor today using the hoist. Here it is in its crate after lifting.


Finally, we tested the mirror doors today. Here is a video of them opening, then closing, taken from below the telescope. The video is sped up by 5x, since it is pretty slow.