Same thing with pempro. I am getting delivery of a ap1100 and they include the software. Thanks

Hi There is a mention of the pro version with encoders but not the standard in the license agreement. Thanks, Tom

Re-doing a PemPro curve will not affect the model. Modeling cannot compensate for periodic error, it can only compensate for global errors. Think of periodic error as being potholes in the road and

Tracking at the sidereal rate only works precisely at the zenith and only if the mount is precisely polar aligned. Everywhere else there will be drift. How much drift depends on your image scale and

Of your 3 questions, the 2nd one is the most pertinent and the answer to it informs the answers for the 1st and 3rd. We all live under one giant lens called the atmosphere. We all know it's dynamic

I'd be interested in the answer as well. My mount is on a tripod in an observatory and I adjusted PA the other night. I didn't update my model and guiding remained at around 0.35" RMS error in

three quick questions: In a very small nutshell, how can a pointing model improve tracking? Why would you need such a model on a scope with encoders? How much improvement can you expect in unguided

Hi Brian, As you know, I responded to you offline earlier. I will take a look at your logs and get back to you. -Ray

That still doesn't tell me what kind of motor mount it has. In any case, how long have you had the mount - since 1998 perhaps? Does it work for you? If so, then what you are doing must be

Sorry Its an AP900GOTO purchased in May 2008. Don Anderson On Monday, August 9, 2021, 04:58:02 p.m. MDT,

Unfortunately doesn't tell me anything. Rolando

Mine is a 2008 vintage S/N:900712 Don Anderson On Monday, August 9, 2021, 02:04:56 p.m. MDT, Roland Christen

Hi folks, this one is probably for Ray - under what conditions does an APPM generated pointing model become invalid? I have been experiencing tracking/guiding issues, and when I turned off tracking

The 900/1200 mounts have spring action built into the motor mounting bracket. They require meshing the teeth properly in order to take advantage of the spring action. The very early and oldest mounts

This true for the older 2008 900GOTO? Don Anderson On Monday, August 9, 2021, 09:48:48 a.m. MDT, Roland

Last night I decided to try and completely delete the Astro-Physics folder in Program Files and start from scratch, instead of only deleting the Setup file in the APCC directory. This appears to have

With our spring loaded mounts balance both axes, especially Dec. Roland

Hi Dave, > In years past, I have worked with Mathematica, Matlab, written code, and designed and implemented electro- > optical-mechanical experiments for 30 years. This probably has to do

Hi, In days past, I thought of myself as a smart guy. I am aging, and finding opportunities to question the continuing truth of that assessment. I'm sure you ship new 1100GTO each month, yet this

What about dec balance? The manual says to balance camera heavy. I used to achieve counterweight heavy and camera heavy by balancing with the lens cap on. But after a while I figured that the lens cap