I would like to open this thread because since about a year I am looking for an alternative for the focuser of my TAK E130. The focuser has at least two problems. One is that the drawtube is not parallel to the axis of the outer tube by a large amount. Therefore one needs to recollimate primary and secondary mirror for every rotation of the focuser. Secondly, when I reverse the direction of the focuser movement during focusing, the image shifts and rotates by about 7 degrees. TAK has already replaced the focuser once, with no significant change.
My naive idea was that in the age when people send helicopers flying on Mars it should be possible to construct a focuser which just works precisely enough. However, in my case, a solution seems to be impossible to find, because I would like to continue to use my ASIAIR. With the ASIAIR, I am right now stuck with their EAF focuser motor. This means that I am also bound to use a mechanical focuser to attach the EAF.
Unfortunatelly I havent found any alternative mechanical focusers for the Epsilons on the market. All products are integrated motorized solutions. Even Moonlite, which produced a very nice mechanical focuser especially for the E130, stopped production in favor of a motorized solution.
(At this point usually the discussion starts that ZWO is so bad to not support other focusers working with the ASCOM standard or why I dont use NINA instead of ASIAIR. I already talked to ZWO about this and also looked into NINA, but this would be a topic for another thread.)
My naive idea was that in the age when people send helicopers flying on Mars it should be possible to construct a focuser which just works precisely enough. However, in my case, a solution seems to be impossible to find, because I would like to continue to use my ASIAIR. With the ASIAIR, I am right now stuck with their EAF focuser motor. This means that I am also bound to use a mechanical focuser to attach the EAF.
Unfortunatelly I havent found any alternative mechanical focusers for the Epsilons on the market. All products are integrated motorized solutions. Even Moonlite, which produced a very nice mechanical focuser especially for the E130, stopped production in favor of a motorized solution.
(At this point usually the discussion starts that ZWO is so bad to not support other focusers working with the ASCOM standard or why I dont use NINA instead of ASIAIR. I already talked to ZWO about this and also looked into NINA, but this would be a topic for another thread.)
