First, thanks to all of you who try to help solving this problem. It is very helpful and instructive for me. With the current situation I don't go everyday to the observatory, next time will be

Jim, What type of viewing, eyepiece or computer? Post some pics, this could be a fun project. I have a 600 lb. portable SiTech mount. Would it be feasible to roll back the whole storage shed instead

We have a 25” mirror on a German Equatorial Mount that uses SiTech and Renishaw absolute encoders. We have had issues with our mount, as it was built back in the 1950s. But something I found, that

It's a really easy thing to try, and also, I've seen too much integral on may systems. Can you tell me what your P I and D parameters are? I'm not 100% sure, but I'd be willing to bet that changing

I would apply Don's second paragraph of checks before the changing PID parameters. I would not be playing with the loop parameters unless there was a consistent issue and I was sure the physical

Hi Maxime, Please try the PIDs settings that Dan suggested. They might be able to smooth out the RA motion. Use the ServoConfig.exe utility to adjust the PIDs and check for RA motion. Do this

Hi Jim, glad to hear you are making some progress with the scope. How are the skies at the location? Perhaps I'm wrong and I've never personally tried this, but I seriously doubt you will be able to

Some of you may remember when this saga began some dozen years ago when the Astronomical Society of Eastern Missouri acquired a 32" telescope then owned by Al Kelly in Houston. We had worked out a

Did you try my suggestion of lowering the integral and raising the derivative? Dan

I can't help with the oscillation, but I wanted to mention that 12595200 is the correct number for ticks/rev (31488 * 400x interpolation = 12595200). I'm a little bit surprised that your Al ticks per

Hi Maxime, OK, your test with IGNORE means the mount encoders have NOTHING to do with your oscillation. Your description of error and current on RA says the servo is heavily loaded, which you also

Hi all, So I went to the observatory yesterday. The shaking was discrete but the mount was still not behaving well. It was blocked again while pointing low toward West. The shaking was present in

Yes, that is in the back of my mind, but first I have to be successful on the script part. Then I will look at see if I can automatize the camera. Thanks for the reminder.

Don, Thanks for the information. Hopefully I will manage to get it right. Now I have to wait for the full moon to take advantage of it (I am imaging in between). Alvaro

Hi, You could find ASCOM driver for Sony here : https://www.cloudynights.com/topic/678666-ascom-driver-for-sony-cameras-available-for-testing/ or here :

Hi Alvaro, When you set up SiTech to do a PXP rmodel, SiTech creates a script to do the PXP model. That script is listed in the script window where you set up the PXP model (where you tell it how

Hi Maxime, My suggestion about the worm/gear fit and grease is based on your description of having to release the fit a bit to be able to move the mount away from viewing Venus at low altitude. You

Hi, Thanks for your answers. Don, the shaking was difficult to identify as it was not present all the time and not every night (it just shake for 4 or 5 sec then it's ok for 30s). It's just that some

Dan, We kind of talk a while ago about using the script that collects the PointXP by using plate solving. I mentioned that I use a Sony A7s, and that there is not ASCOM access to the camera, so I

Hi Ralf, Sensitivity is basically an indicator to see how much data the terms have to work with. Set the limit to 20,000, the turn on all terms. This will allow PXP to turn on terms it normally