This wiki page is a guide to use the Differential Image Motion Sensor Using Multiapertures (DIMSUM) instrumentation that was installed to Aux Tel between December 6th and 16th. I am currently writing this as a wiki page to be able to get feedback during the process of documentation. Once everything is finalized I can create a pdf file if requested.
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The SMA threads are 1/4-36. Digikey sells them, part number A104989-ND. Bought 100 of them.
Asked Helen to place this order since credit card failed.
Feb 14 2024 Pachon, Stubbs
Changed optical fiber configuration to have Xenon source feed attenuator module to 600- micron 1:4 fiber then 4 of 200 micron 1:4 bundles. This gives us 16 sources 200 microns in diameter.
I did find one fiber that was flopping/loose in the pegboard, that was presumably the one that showed anomalous behavior in analysis done Feb 2024 by Ali K.
Checked using headlamp that all fibers look comparable.
When running remotely on data collection using gphoto-2 to interrogate aperture worked fine, after power cycling the camera.
But the
./CommunicateTrial.sh
script failed.
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1218 stopped data collection, going up to focus. Image 6708 should be good test frame.
Nope, no change.
Did a focus on camera as follows:
Set to "Av" for auto exposure. Set lens to AF
Partial button press to get a beep
change back to 'M' and MF.
lens is set to f/5. test image is 6710.
PSF looks good but it's misaligned. Drop back on zoom setting to around 150
redid focus as above, slid attenuator out to get more flux.
test image is 6711
OK this looks acceptable. Going with this config.
Seems fewer than 16 spots but outta time.
started another auto-run at image 6713.