Guide with medium to low aggression. Set guide exposure between 2 - 3 seconds. Guide once every 10 seconds, or perhaps every 15 seconds, depending on how accurately your model is working. Rolando

My Mach2 is now working well thanks to the people at AP :-). Yesterday I built my first modeling, surprisingly easy. And I know that the main goal of an encoder mount is to eliminate guiding, but I

Tom, I would be delirious to achieve the PE you're reporting. I don't understand why you're worried about the fundamental 64.

I reached out to Howard. He told me the 64x fundamental is part of the planetary gear train of the motors. Only recourse is to try another motor, but it is anyone's guess if it will be better. He is

Tom, Just to be clear, the subframes and binning feature has been in PEMPro for over three months( June 7th 2020, v3.00.29). -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command

Smoke won't do a thing when you are calibrating. It won't affect it. Rolando

Yes, absolutely for sure. It would add periodic error from RA tracking to the drift, and would explain the up-down trajectory. Rolando

On Tue, Sep 15, 2020 at 11:47 AM, Ray Gralak wrote: PEMPro allows subframes and binning in Polar Alignment Wizard.Ok, I will try this again. I'll redo the calibration. Now it seems that all the way

Well there is no need for a field flattener. The full frame of the FSQ106 is flat enough. It's when you add an OAG. However, I am beginning to think maybe something else happened here. I have been

Normally tilt does not produce coma. It simply shifts focus. What is a CTU? Whatever it is, I don't think I want to end up there ;^)) Rolando

The camera has pretty severe tilt challenges. I have one as well and getting the field flat is a chore with a CTU.

They should not look comatic unless you are not using a field flattener. Rolando

Hi Tom, PEMPro allows subframes and binning in Polar Alignment Wizard. Make sure you are using the latest build, currently v3.00.33. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics

// One thing that can cause a problem with the centroid measurement is an out-of-focus star. If the star has a comatic tail or is somewhat oval then the centroid will wander around with poor seeing. I

Whether you have PE on or not, there won't be much difference if you guide. I would not fret over a few arc seconds. There are actually people imaging with mounts that have 40+ arc second PE and don't

I should really read the title and the body of the message ... :) For whatever reason, my brain froze and I was thinking Rolando was following up on my PEC measurement query.

Hi Rolando, I'll keep and eyeball on that. There's not much to do on a Moonless, hazy night but to do PEC measurements. Another reason, I'm looking forward to my Mach2 so that I don't need to do

One thing that can cause a problem with the centroid measurement is an out-of-focus star. If the star has a comatic tail or is somewhat oval then the centroid will wander around with poor seeing. I

Thanks Ray – As usual, an excellent response to my recent PEMPRO concerns. I have filed this gem away on my hard drive, for future relearning, or if I have another senior moment. Wish you

On Mon, Sep 14, 2020 at 08:52 PM, Ray Gralak wrote: there is heat wafting up off of nearby buildings, pavement, etcThat could be a possibility. I doubt there are tube currents., The scope is always