On Wed, Jan 3, 2024 at 12:36 PM, @darkairmouse wrote:
Hi Chip,
Understood.
Despite the not-so-good RA guiding the accuracy of the pointing was very good.?
Yue
So getting good GOTO results I think tells us that the mechanical basics are solid and all you really need to do is fine tune your autoguiding. Leave the mount hardware alone for now and look at the what your autoguiding corrections are doing. Are you autoguiding using a OAL or piggybacked guide scope? If you are looking at images from an SCT and using a piggybacked guide scope what is the working focal length of the SCT and guide scope??
Some years ago I tested autoguiding results using both an OAG and a piggybacked scope on my pre-update classic 2-piece worm block G11 which had the Belleville spring disc mod installed. I had solid results at prime focus of my 10" f/6.3 LX200 SCT both piggybacked and using the OAG with the same QHY 5-II mono camera. Auto guided PE was well under 0.5" RMS - within 0.46" - 0.38" PE RMS, this is about at good as this mount gets. I had the chance to retest after Scott did the tucked in servo motors and spring loaded OPWs and the results were virtually identical on the now all stock new spec drivetrain. The difference is that the reworked mount is now ALWAYS in this range or better if the seeing is good.?
I cannot repeat the exact same setup using the latest L6 firmware because several years ago I switched to ZWO cameras and I am now using the ASIAIR Plus controller in place of the laptop and full suite of ASCOM apps like PHD2. That said the ASIAIR did show a slight autoguiding improvement over the normally slightly lower performing simplified ASIAIR PHD2 autoguiding.?
?
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Chip Louie Chief Daydreamer Imagination Hardware?
? ?Astrospheric Weather Forecast - South Pasadena, CA?
Chip Louie