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- Worked with Ali on the paper. He's doing great!
- Got new masks from DeeDee. See CBP mask confluence page: https://confluence.lsstcorp.org/display/LTS/Rubin+CBP+mask+design+notes. I think this is good enough for us. The one concern is that it doesn't take 50 mm masks, but rather 47.5 mm masks. Are we okay with a non-standard size? The opening is 44.5 mm, which I think is okay since 3.5 degrees is just under 39 mm.
- The diameter of M1 for the telescope Chris got is 304.8 mm (or, that's what's quoted as the size). So I measured out 304.8 mm and moved an LED (not a laser as Chris wanted) until the beam on the wall was that size.
View file name IMG_0178.HEIC height 250 View file name IMG_0179.HEIC height 250 - The location of collimation was closer to the primary than I was expecting. Pulling back the fiber location did decrease the size of the resultant spot.
- I then moved the optic until it was in front of the beam. Seems like the focus is pretty promising, but tomorrow I will try to set up and measure the actual size. Here you can see the setup, the before focus red spot (note how the spider is not centered, but I think that's okay), the after focus red spot, and something approximating best focus.
View file name IMG_0189.HEIC height 250 View file name IMG_0184.HEIC height 250 View file name IMG_0183.HEIC height 250 View file name IMG_0186.HEIC height 250
- Got the mil spec connector holder back from the machine shop. It's mostly fine but somehow the screw locations for the mil spec connector are in the wrong place, so I'll have to drill them and tap them in the correct place. Must have been my mistake but I thought I was pretty careful. I was also supposed to get the other piece back today but it wasn't there.