Joe VanCleave
Member
A final update for today. I used a salvaged cabinet shelf as a support base atop the Bruneau's Pneumatic Tripod. Note the two tripod bushings; the tripod head has three such fittings available.
P1090944a by jvcabacus, on Flickr
Here's the underside of the support base, showing the tripod head and mounting hardware.
P1090945a by jvcabacus, on Flickr
I did a series of tests today under my back porch. Note the addition of the plate around the arm sleeve, that secures its mounting rings.
P1090943a by jvcabacus, on Flickr
My initial tests showed some fogging or flare along one side. After a few tests I determined it was caused by bright light from off-axis flaring inside the old Kodak Ektar lens. I added a makeshift lens hood and the problem was resolved. However, the aluminum focus rods were left unpainted, and they reflect too much light. I'll need to paint them flat black, while ensuring the paint doesn't interfere with their motion.
Here's the final test image for today. F/22 at 2 seconds, developed for 3 minutes, with red LED-illuminated inspection via the viewing port. No fogging. Next, I'll need to repeat these tests in bright sun.
Flower003a by jvcabacus, on Flickr
~Joe

Here's the underside of the support base, showing the tripod head and mounting hardware.

I did a series of tests today under my back porch. Note the addition of the plate around the arm sleeve, that secures its mounting rings.

My initial tests showed some fogging or flare along one side. After a few tests I determined it was caused by bright light from off-axis flaring inside the old Kodak Ektar lens. I added a makeshift lens hood and the problem was resolved. However, the aluminum focus rods were left unpainted, and they reflect too much light. I'll need to paint them flat black, while ensuring the paint doesn't interfere with their motion.
Here's the final test image for today. F/22 at 2 seconds, developed for 3 minutes, with red LED-illuminated inspection via the viewing port. No fogging. Next, I'll need to repeat these tests in bright sun.

~Joe