I learnd from the forum here that fluid heads seem to be an interesting alternative to fork mound for binos. I am trying to get an overview of fluid heads and experience some difficulties. The companies have different lines and it is not straight forward, at least for me, getting an idea which model fits.
From astronomical applications the import numbers seem to be:
- payload/ diameter of the axis
- distance between the center of gravity of the telescope and the fluid head (how is that actually defined, distance to the top plate or to the rotation axis?) / strength of the spring
- damping time
Why I am asking, I would consider a fluid head as an replacement for the APM single arm fork mount for the APM 70 bino, hoping to get better balance with heavy eyepieces ( Baader Morpheus), but also better damping. But also for a big 12 kg binocular telescope I might be interested if I can get very good stability (damping time less than 1 sec) and also reasonable lightwight ( < 5 kg).
What confused me, the Cartoni Focus line (6-22) is clearly described, but I have difficulties to understand the Vinten heads and the same holds for O'Connor. More specifically, why are the Vinten and O'Connor heads much heavier for the same payload? Then, it seems to me that they are much more expensive. Why? Are there other interesting manufactores which I am not aware of?
Fluid heads are not developed for binos, is there a line which fits best for binos in terms of performance, weight and may be also price?
Many thanks for comments