Re: Adjust CP4 Clock Frequency
On the other hand, if you are working on improvements to an unguided solution and need a test site I would beBut why? Using APCC Pro's modeling I have had no problem doing 20-30 minute images unguided at 1.74 arc-sec/pixel with round stars. I've posted maybe about a dozen here before. A number of users have also done unguided images.
Some scopes need closed loop guiding because they are hard to model. I think yours is one of them.
Even the concept of using drift to set the tracking rate was done long ago. My own PulseGuide did something similar over 15 years ago. You would center a star, start a timer and let the star drift. The user would re-center the star and click another button andPulseguide would set the tracking rate in both declination and right ascension. It could be used for any object too, like comets.
And what might be even more crazy is that PulseGuide could do this *before* custom tracking rates could be set in the AP control boxes. It did this by sending evenly spaced, well-timed guider pulses, thus its name, "PulseGuide". You can still download it from here: https://www.pulseguide.com.
And it's not like I don't have experience with lots of telescopes, from refractors, SCTs, MakCass's, Newts, RC's, etc. I've experience with scopes with serious flexure issues that can make dramatic changes in focus as temperature swings, like my old18-inch Newt on a 1200GTO circa 2003 (and a younger me! :-)
For now, APCC hasn't been able to do miracles with your particular truss tube scope so it's necessary for you to do closed loop autoguiding. For people with solid, repeatably pointing scopes APCC Pro's tracking rate correction already sets the tracking rate well enough to do unguided imaging, and even to dither without having to do plate solves. :-)
Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro
Author of PEMPro V3: https://www.ccdware.com
Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver