That additional computer interface is on my ever growing ToDo list!?? Actually, you can just use the ammeter to tell if the mount is balanced, which you tell by slewing CW and CCW on an axis...best with counterweights horizontal.? ? If the current is equal in both slew directions that axis is in balance.? ?Then running sidereal rate, the current does not change.? Say about 0.20 amps.?? If you unbalance it say with a hanging East side cord (I'm testing with 1 pound weight now on the G11T, and a pair of back to back soft Belleville soring washers in the Titan RA drive....working well), the current will go up a little. But still stays about 0.27 amps.? ? So looking at current vs time is not of value unless:? a gear jams.? Or a cable snags!? Etc etc.? So you use the motor current monitor to tell if your worm position is adjusted right.?? Autoguiding adds more pulses of power to the motors and the current goes up a little from that.?? Fast slewing on my systems can take about 0.6 amp per axis, but it is usually only about 0.7 amps during a Park to CWD from a large distance.? You can reduce the digital slew rate limit, and thus reduce the max motor current also.?? Here is a picture of the Titan RA running a C14 EdgeHD with 80 mm findervscooe on top, heavy camera and 0.7 massive FL reducer, Celestron OAG, and Nautilus filter wheel...about 82 lbs of counterweights.? Showing 0.29 amps draw just sidereal tracking with a 1 pound East side hanging weight.?? Anyway, the seeing is bad tonight...but maybe I can catch a galaxy from the light polluted back yard.? I was shooting the Hamburger galaxy in the Leo triplet last night.? That galaxy took up the entire frame of the APS- image chip on the QHY168C camera even with the FL reducer.? I started by trying to shoot in the center of the triplet and there was nothing there but a lone star...I did not realize the image size was so tiny on this system with FL ~2800 mm.? Oh well ...it's all for fun.? We are not going to beat Nasa.? ?? Stay well, Michael On Thu, Apr 1, 2021, 8:04 PM John Kmetz <jjkmetz54@...> wrote: Michael, |