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Trip Summary
- Differential temperature sensor and 3D anemometer now working again. Put in hose clamps to secure the differential temperature sensor.
- Tested the summit electrometer CSC and got it to read out a photodiode. Got Kevin to order parts to properly hook up the photodiode to the electrometer so it can measure background light in the dome and on ComCam.
- Used the Canon camera to do tests of the AuxTel focus as a function of M2 position. Concluded that the M2 position is not limiting AuxTel focus (but astigmatism is significant) AuxTel_Focus_Tests.pdf
- Twanged the M2 rods on AuxTel and looked at the EFD accelerometer data, and saw clear 20 Hz and 60 Hz resonances on M2. twanging_notes_121522.pptx. That implies 20 Hz is the fundamental frequency of the M2 rod system.
- Made an inventory of the items we have. Also took a video but it's too big to upload, so see below for inventory.
Day log:
Note, see Rubin trip Nov 2022, Stubbs for log for day 1, Dec. 2, 2022.
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auxtel-macmini03.cp.lsst.org
139.229.164.205
It can now connect to the RubinObs-LHN wifi and it's possible to ssh into the computer.
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Also, got Ali access to the summit guest wifi. Specifically, we had to fill out the onboarding form (from Diego):
This is the Summit Onboarding Procedure. Here you will find instructions to access various services in Rubin, including WIFI: https://ittn-045.lsst.io/
The onboarding form can be found here: https://project.lsst.org/visiting-the-summit/network-access
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Worked on the photodiode readout setup so we can get a sense of how dark the dome is during the day. The CSC isn't configured to be able to produce a voltage yet, so we wired up the photodiode with the one Triax cable we had (a test one that has three banana clips) and clamped two of them (green and black) to banana clips going to the anode of the photodiode and the red one to the cathode, and taped them with electrical tape. This is a pretty janky setup. So I gave Kevin Reil the part numbers to order good Triax BNC adapters (Keithley 7078-TRX-BNC) and we will just use a BNC to connect the photodiode to those adapters when they arrive.
But with this setup and the CSC I read out continuously starting at 5:26pm until ~9:00pm in 30s intervals.
I had to set the range to 2 mA because it was bright at the beginning. But here are the last plots (plotted every 6 minutes) before we had to close the shades at 8:51 pm because the sun had set.
After closing the shades the photodiode just read 0. When I changed the range to 2 uA, I got the following:
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The notebook used for these measurements is called electrometer_for_ChrisW.ipynb
A few notes on the CSC:
- It's not writing enough digits to the LFA
- There are a lot of bugs in this CSC. It frequently has to be restarted or the Keithley has to be sent to standby and enabled multiple times
- Not all the commands that are supposed to work work.
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Did two types of observations. Took SHWFS data, particularly hfr videos, and also focus tests (which will probably be useless).AuxTel_Focus_Tests.pdf)
Details here: observations_121522.xlsx
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Packed everything and took a video of our full inventory. For some reason I can't upload it to my computer right nowIt's too big to upload, but here is a photo of our four boxes of equipment, and all our stuff unpacked through the AuxTel grating.
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Storage Inventory
- 3 keyboards
- 3 monitors + cables to connect them to computers
- 3 computer mouse
- 1 Dell computer
- 5V and 12 V power cables
- 3 Chilean power strips
- 2 10 m Chilean extension cords
- Nasmyth port screws + 5 lb counterweight
- cables for connecting to the 3D anemometer and changing its settings + spare anemometer cable
- various usb to usb connectors
- many zip ties of different lengths
- 17 US-Chile power adapters
- high voltage clamps
- 1 short BNC cable
- 3 BNC to butterfly clip adapters
- 1 BNC T connector
- 2 sets butterfly clips
- twangometer (DVM + Arduino + cable + accelerometer + solenoid)
- 3 L clamps
- Kendo set of 6 pliers and wire cutters of different sizes
- 7-8 additional pliers and wire cutters
- 1 wire stripper
- collection of 1/4-20 screws
- collection of sma caps
- 3 extendable razor blades
- 2 metric and 2 imperial Allen key sets
- 2 packs of duct tape
- 1 roll of black masking tape
- 1 wrench
- set of screwdrivers
- scissors
- oscilloscope
- 3 DVMs + cables
- calipers
- 2 tape measures
- 1 ruler
- 2 camera bags
- ND filters
- polaroid macro lenses for Sony camera
- 3 packs of ziplock bags
- 1 thing of aluminum foil
- ZWO Asi camera
- Sony remote camera control
- 3 ball bearing camera mounts
- 1 c-clamp for camera
- 1 5 minute epoxy
- 1 set safety glasses
- 1 flashlight
- 1 sharpie
- 1 set drill bits
- 1 rechargeable 12V lithium battery
- 8 AAA batteries
- 8 AAA batteries
- 5 9V batteries
- 2 high voltage clamps(?)
- tool for tightening 2" optics
- tool for tightening 1" optics,
- lens cleaner
- ~ 2ft of optical tubes
- optical posts of various sizes
- optical post holders of various sizes
- lenslet arrays
- soldering station
- magnifying glasses
- heat shrink (but it seems pretty shrunk by the heat)
- spare Arduino for differential temperature sensor
- two circuit boards + wires and resistors
- spare 1 to 4 optical fiber (which may not work)
- spare 1 to 7 optical fiber
- halogen lamp
- 1000 W pure sine inverter 12 VDC to 120 VAC
- 1 SRS SR570
- mount for optical fiber collimator
- 3 tripods
- 1 HgAr calibration source
- 2 solar cell mounted
- little black tube that says UV on it
- white lamp that I don't know what it is
- something that might be a VNA, but I'm not sure