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

Using the latest ASCOM driver (not APCC), is Park at "Current Position" equivalent to Park 0? Bryan ---In ap-gto@..., <chris1011@...> wrote : With Park 0, you can park the scope anywhere in the sky.

Hi Rolando Appreciate your help! Here are some data I pulled from the log after calibration ============================ Calibration Begins at 2016-09-21 21:49:01 Equipment Profile =

With Park 0, you can park the scope anywhere in the sky. The mount will simply stop moving, motors de-energized. Then turn off power. Assuming that you don't tear down the scope and mount, but leave

Still no information to work with. need to know the calibration parameter numbers after you do a calibration run. Example: If pixel scale is 1 arc sec per pixel, then Dec movement would be 15 pixels

I've updated to latest ascom v2 driver and also HC . Perhaps the second time in my life my mount will be out continuously for a week . I see park 0 as fanciful ; can I switch on the mount the next

Anis What is your dither setting in SGP? Don Anderson From: "anismo@... [ap-gto]" To: ap-gto@... Sent: Thursday, September 22, 2016 7:13 AM Subject: [ap-gto] AP900 DEC sawtooth

Hi Rolando I dont have keypad connected to the system. It is only connected to the computer. ASCOM v2 and SGP The PHD2 settings are 1. Camera pixel size - 8.62 micron (Lodestar x2) 2. Focal length -