GEAR · IN USE
Camera tripod + galvanised bracket
Alt-az, undriven. Rebuilt 30 Aug onto a friction-loaded roller-bearing swivel — pointing is now a push rather than a fight.
Brendan, Goolwa SA
Rebuilt, 30 August 2026
The azimuth axis is now a friction-loaded roller-bearing swivel — lazy-susan smooth,
but loaded so it does not free-spin and holds where you leave it. Swivelling is light and
continuous instead of shove-and-overshoot.
What this does and does not fix, stated up front so tonight can settle it:
- Should fix: re-acquiring the target after it drifts out of frame. Previously the
binding cost of a drift-through run was the fight to re-point afterwards.
- Should fix: vibration from the act of pointing, since it no longer needs a shove.
- Does not fix: the drift itself. Still undriven and still about 17 px/s — the mount
is smoother, not tracking. Run length is unchanged.
- Unknown: whether the friction is set well enough to nudge in small increments, or
whether it still overshoots at the scale of a 46' field.
Before the rebuild
A camera tripod and a piece of galvanised bracket, no bearing. It was exactly as
agricultural as it sounds.
The instinct is to treat the drift as the problem to solve. It isn't, yet: drift doesn't
degrade a stack, it only caps how long a single run can be. The working method is to park
the scope at the leading edge, take hands off, and let the target drift through the frame.
Fine motion and a drive become worth it when run length is actually the binding
constraint. Right now sampling is.