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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