Not much to report this week as we prepare for the lift of the corrector. Since the corrector is going to have all of its covers on and it may be years until we actually have this view of it again I thought I would post this picture showing the 4 elements (M2 can not be seen as it is under M5. Note the reflections of the straight support members are severely bent showing the curvature of the mirrors.
The WFU corrector has passed its initial tests in the clean room setup in the loading bay. This was done ahead of schedule and the corrector will be closed up and mounted on the tracker over the coming weeks. The worked involved people from Austin and the optics team and we are grateful for the long hours and careful work they did this week.
The HET Board Meeting was held on the previous week and the board was very impressed with the progress that had been made and the plans for the recommissioning. It was a great event and the board did not ask for any significant changes to the direction that the HET is going.
We continue to make progress in the testing and development of the telescope control system. We have conducted tests to implement new pointing zero points and are working on the tip and centroid tracker sphere. Having done these tests before the corrector is in place will give us a chance to look for potential problems and solutions before we even see first light.
At the end of this last week the test weight at the top of the telescope was removed and with it the CAT. This means we will have no more on-sky tests until the corrector is mounted and ready for commissioning.
This was a big week for us. The Corrector optics and the Focal Plane Assembly arrives this week. Instead of the normal, mostly text blog, I thought I would just post a few pictures showing their arrival.