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October 24, 2023
- Finally got in touch with Applied Image, and sent them 3 dxf files of ComCam masks to make. One is one hole per amp, one is an L shape, and one is two lines of holes with different shapes.
- Went to the machine shop. Can't repeat online the things that were said there, but the parts haven't been started yet. They are busy. They said they would give me an estimate by the end of the day today.
- Talked to Larom. There's a bug at USDF so she can't get onboarded yet. Her plot of FWHM vs airmass was useful to the dm science pipelines team. They found that the location of AuxTel was recorded incorrectly in the header. They haven't figured out why the fit never finds FWHM = 1.6.
- Talked to Parker. Will try to get to Chile by Nov. 6, maybe Nov 13 at the latest. I need to talk to Erin about filing a TR and how I should do that now. She also suggested I make a Keysight CSC PR sooner, so I can get feedback from Eric and Tiago.
- Talked to Meghan. She will start working on the aerosol project that Chris suggested.
- Moved the Meade telescope that Chris brought onto the table. Going to set things up so I can do measurements of the lens PSF with it.
- Continued adding to the AT pinhole overleaf (while sitting in on zoom meetings).
- Yesterday we got to the point with the Keysight CSC that we could take data and try to write a fits file, but for some reason it wouldn't write the fits file to disk. And then I checked and the electrometer could no longer connect (over either the CSC or telnet). I asked Parker to restart the Keysight. It didn't work. I posted in rubinobs-it-tucson. They told me to file a Jira ticket. In the end Parker made it work by running
ifup enp2s0. - I gave DeeDee and Mark the initial masks we want to make.
- Tonight, I'm going to help Kevin Fanning rebuild the DIMM pointing model and generally learn how to use the DIMM. I'll try to get him to run it nightly.
- Update: tried to build a new pointing model, but there were only 3 stars that we could find on one hemishphere, so we gave up. We are running the DIMM for the night, though. Hopefully it will close successfully in the morning.
October 25, 2023
- Made a ticket for the AuxTel baffle: https://jira.lsstcorp.org/browse/SUMMIT-8089
- Heard back from Todd at the machine shop - they will have the parts done by the end of the week.
- At CBP update meeting, I learned that the electrometer CSC has to be designed so that it can take both the Keithley and the electrometer in one. I have to make sure I modify things correctly. I think I've been doing it wrong...
- Had issues with pushing the Keysight electrometer code to the lsst-ts GitHub. I had to set up 2FA on GitHub and then it worked fine.
- Got a response back from Applied Image. Seems like the dxf files didn't properly convert between AutoDesk Fusion and AutoCad, and for some reason the scaling was off by an order of magnitude and there were extra lines in some of the dots. Hopefully we're solving that now...
- Spent a long time looking for the right adapters for the Meade telescope, and also looking at various manuals and online to figure out the location of the focus behind the secondary. I was unsuccessful, but I have some slightly wrong adapters that should work.
October 26, 2023
- 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.
- 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.
- 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.
October 27, 2023
