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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if all this fails, find white light source
Feb 15:
Did 'factory reset' on flash trigger module
Did power cycle on receiver
Taking an image with manual trigger worked to generate flash
Taking an image with Canon EOS utility also worked with light spots
But running shell scripts didn't work:
---these show no spots:
-rw-r--r-- 1 stubbslab staff 26M Feb 14 21:58 CU2A5971.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5977.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5978.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5979.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5981.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5982.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5976.CR2
-rw-r--r-- 1 stubbslab staff 26M Feb 15 2024 CU2A5980.CR2
(base) stubbslab@MacBook-Stubbs code % pwd
/Users/stubbslab/Documents/strobed_dimm/code
----- these do show fibers illuminated:
IMG_023.CR2, taken with EOS utility. :
-rw-r--r-- 1 stubbslab staff 28M Feb 15 10:09 IMG_0021.CR2
-rw-r--r--@ 1 stubbslab staff 26M Feb 15 11:08 IMG_0022.CR2
drwxr-xr-x@ 8 stubbslab staff 256B Feb 15 11:25 Photos Library.photoslibrary
-rw-r--r-- 1 stubbslab staff 26M Feb 15 11:26 IMG_0023.CR2
(base) stubbslab@MacBook-Stubbs Pictures % pwd
/Users/stubbslab/Pictures
so there is some configuration problem with our script?
putting data here on laptop: /Users/christopherstubbs/data/DIMSUM
christopherstubbs@Christophers-MacBook-Pro DIMSUM % scp stubbslab@auxtel-macmini03.cp.lsst.org:/Users/stubbslab/Pictures/IMG_002\*.CR2 .
I think we're saturated. Try again at f/20. This will be image IMG_0024, 1/125 sec at f/20. Did this conversion:
dcraw -o 1 -D -4 -T IMG_0024.CR2
convert IMG_0024.tiff IMG_0024.fits
then read fits file into MATLAB for inspection.
Even at f/20 we're saturated. So I need to re-install one of the optical attenuators.
Also need to solve the fact that we aren't triggering the flash using our own scripts.
I'm going to take a stack of 10 images by hand starting at