Hey Daniel Congrats, I am also in the same boat as I am expecting to pick up my new AP1100GTO next week as well. For now my plan is to just use AP ASCOM V2 + SGP + PHD2 and see what that is like.

Bruce, I think he meant that to check the backlash values in the hand controller because the HC will initialize the mount with them. On power up, I think the backlash values default to 0. The values

I kind of doubt it. According to the published AP command protocol, there's no way to read these values from the mount firmware. You can only set them. There are actually quite a number of these

Hello AP-gto group, My name is Daniel Pasternak and will be expecting delivery of an AP1100 early next week. I searched the posts and did not find what I am looking for. I would like to control

Hi Anis, Your PHD2 log looks very much like the system is trying to compensate some nonexistent backlash: As in PHD the backlash compensation is inactive, you should check if it is also set

If he doesn’t have the hand controller the driver, I would think, should show the setting for sure. Steve

Thanks very much! Bryan

Suresh I use Astrotortilla to plate solve. It shows the RA/Dec of the center of the test image, the FOV of the image and the rotation of the image. Bryan

Hi Suresh. One of the computed values in any plate-solve is "position angle", which determines the angular position of the camera relative to the stars. As long as you have a reference image showing

The log shows the calibration was near-perfect. PHD2 does a bunch of sanity-checks on calibration and generates alerts when things don't look right - none of that happened. I suspect there's a

Someone else will have to come in on this question. I cannot answer it adequately, sorry. Rolando

Thanks Rolando! I think I am getting a sense of things to check on now. I have a bunch of stuff to check with guiding parameters (Bruce also pointed to me few things to work on). I will get this done

Antoine, thanks for that note. I wonder then if all that really matters is that you have the box checked for the camera doing the guiding. Checking both maybe doesn't hurt but you must have it checked

Thanks Rolando, may i ask you a question about TSX ? lets say i wish to shoot LBN 777. My set up is a takahashi fsq 85/Mach1 /canon 600 D. You know very well that there will be no data in a 20 minute

That kind of sawtooth guiding is very indicative of loop gain greater than 100% due to faulty calibration parameters. It says something like "send a 2 arc second correction for a 1 arc second error".

Park 0 is a keypad designation for Current position. Same as Current position in the Ascom Driver. Rolando

I use TSX with Camera Add-On to image with my Mach1GTO. I have « Auto Reverse X on G » checked on both Camera Setup and Autoguide Setup. This allows TSX to automatically reverse autoguide RA

Additional info: Instead of the PHD log, I have it loaded in PHDLab Here is a 13.5 minute with normal guiding: http://dev1.codelathe.com/url/zlk2xugsghth Here is the case showing the "sawtooth":

Thanks Bruce, That is a good point. I wasn't sure if this is a mount related issue vs PHD2 issue. I guess the fact that the normal guiding working probably indicates something settings related. I am

Hi Anis. I think you're posting to the wrong forum, the folks here aren't very familiar with PHD2. If you post your question over here: Google Groups Google Groups Google