Re: RA axis movement or wiggle
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I can't speak to the AP design
On Sun, Aug 28, 2022 at 5:25 AM HenkSB < haling@...> wrote: On Fri, Aug 26, 2022 at 09:06 PM, Brian Valente wrote:
Michael has it correct, you are likely seeing the effects of the spring-loaded worm. It's not a good idea to try to zero it out, that's not how the spring-loaded worms work
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Roland Christen from AP did a nice writeup on this recently (AP mounts have spring-loaded worms as well) which may make for good background reading on this topic:
"why is a mount springy"
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It looks like the AP SLW works different than the Losmandy one.? They have a backoff screw to limit the outward movement of the worm whereas the Losmandy SLW has a backoff screw to limit the inward movement of the worm.? The idea with AP is that the spring pressure is kept low, appropriate for tracking but not? for slewing whereas with Losmandy it is higher to handle the pressure required for slewing and is mostly aimed at preventing bind-up while allowing tighter settings to minimize backlash.? Is that a correct assessment?
-- Brian?
Brian Valente astro portfolio? portfolio astrobin?
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