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Have changed lens and set focal length to ~300mm~200mm. Added extension bar above pegboard. "updated' python program in steps 12, 13 above did not work. The earlier version seemed to run (note it hangs in open loop, on purpose).
Tried power cycling the camera and plugging and unplugging but still getting "camera not found" gphoto2 errors.
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try different fiber couplers
replace batteries
Note that autofocus on camera thinks screen is 6m away.
Dec 5 2023.
OK, had some good success working with Johnny Esteves and remote support from Elana.
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That makes a nice, well-behaved FITS file. PSF is about 40 microns across, which I think means for a 300mm 200mm focal length we are basically getting resolved images of the fiber tips, for a 600 micron fiber.
For next time, perhaps use smaller fiber diameters. 200 microns would be good.
I used gphoto2 to change the lens aperture to f/6.3. I was worried we were getting aberrations at faster f-number but I now think it's just fiber tip illumination non-uniformity.
I also removed the ND filter in the optical path. There is now no filter in the beam. Wasn't able to debug why no light in the vertical panel. Might just leave that for next time. It's vignetted by telescope anyway.
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Try fixing second outrigger panel- use different feed fiber?
investigate mounting schemes for mirror seeing monitoring- mount DUMSUM on Aux Tel somewhere. Maybe second Nasmyth port?
Pack up items.
Truss OD on AuxTel is 2.250 inches in diameter
upper rail on stairs is 2 inches diameter
lower rail on stairs is 3/4 inches diameter.
10 am local Dec 7: I swapped the drive optical fiber for upper extension to one that was plugged into the array. Need to see if that worked.
Battery in calipers iis LR44. Need to bring down more.
Any repositioning of DIMSUM to include mirror seeing would have to go for the ride w telescope elevation axis, and would only work when mirror covers are open.