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paullind |
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Periodic Error.jpg
Worm.jpg
Carbon Tube Astrograph on Schaefer Mount.jpg
Small Jackscrew focuser.jpg
Shack Interferometer & figuring 12"
12.5 inch Astrograph and Camper
jackscrew_focuser
Center Swivel Diagonal Mount
125_inch_prime_focus_version
mirror_and_lensmaking
8_inch_hyperbolic_astrograph
building_16_inch_carbon_tube
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