| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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Just an off the wall thought - if you need something that remains perfectly in alignment with the earth's axis, would some sort of gimbal work?
It's getting the alignment which has to be pretty exact with basic and robust design. Something like a Wimberly might be OK for the articulation but it has to be rock solid, Wimberlys are not rock solid.
The head I have is supposed to have a 5 Kg payload, but the payload is supposed to be balanced so the motor doesn't slow down uphill or speed up downhill. Speed has to be consistent 1 revolution per 24 Hrs. The 300mm lens and D800 weigh about 2.5 Kg so it needs about a 1.5 to 2Kg counterbalance, less then the camera/lens, because it can be hung out on an arm so you get the right leverage without adding too much to the payload.
The design is coming together, I am tempted to make a wood mock up to avoid making a metal one which has a snag.
Just about to process last nights images, this will be interesting...
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Robert.