Hi Dan,
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L6 not only improved (by 4x) the encoder accuracy, it changed the servo motor control logic, which can help with slews, tracking and guiding. I wouldn't expect the upgrade to make a major difference in pointing accuracy. If there are pointing issues with L5, it's more likely that there are some other issues with the mount or the scope (backlash, flexure, mirror flop, imbalance, polar alignment, time/geo location settings, poor model, etc.)
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Regardless, an upgrade to L6 should only improve? or, at worst, not change mount accuracy. In my opinion, the upgrade is still worth doing, although I wouldn't expect a major change in pointing.
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Regards,
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? ?-Paul
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On Mon, Sep 23, 2024 at 08:26 AM, <dkfcpalfd@...> wrote:
I have a Losmandy Titan mount, and many months ago I upgraded to L6..... flashed the circuit board/HC with the GFU, and flashed the servo ports with the cable/software.
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I exclusively use the mount for astrophotography, and only did the upgrade for improving guiding/tracking.? My overall guide error went from typically in the 0.80 - 0.90's", to the 0.50's".? This was a home run.
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What I also noticed was that my plate solving greatly improved also, and I? noticed that the plotting of calibration step points on the RA/DEC axes during PHD2 calibration, appeared much more accurate.? With several calibration runs, all the step points were on the axes.... that did not used to be the case.
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My astronomy club has the same mount.? The club only uses the mount for observing..... no astrophotography, and no autoguiding/tracking performed.
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The slewing accuracy can be fairly spotty.... not consistent, and I've played around with modeling and doing an align/synchronize in various parts of the sky.
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I looked at the Losmandy page that provides an overview of L6, and it only discusses improvement in guiding/tracking accuracy, which is the aspect that most of us want.
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With the improvement in encoder resolution with L6, I'm wondering if slewing accuracy of my astro club's Titan mount would be improved if I upgraded to L6?? It seems as though improving encoder resolution would improve the precision/accuracy of any movement of the mount.
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If you think L6 would improve slewing accuracy, I'm going to go ahead and upgrade the club's mount.
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Thanks in advance.
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Dan? ??
Paul Kanevsky