SonnyE wrote:
I did a search in the Help section of PHD2, "Star did not move enough"
(Because I, too, have had this happen.) Here is what I found...
"In most cases, calibration will complete automatically without any user involvement. Obviously, this assumes that the mount and all the cable connections are working correctly. If they are not, the calibration is likely to fail with a message that the "star did not move enough"; and you'll need to do some trouble-shooting. If the star has basically not moved at all in one or more directions, you should look first at the cable connections and mount behavior.
The "manual guide" function under the 'Tools' menu can help with this as can the trouble-shooting section of this document. But if the star has moved by some amount in each direction, you may need to adjust a calibration setting called the calibration step-size. PHD2 uses this parameter during calibration as a fixed-size duration of movement. The default value has been chosen to cover a wide range of typical guide scope set-ups, but you may need to adjust it for your situation. For example, an off-axis-guider on a long focal length scope will probably need a setting that's different from the default value. To adjust it, go into the "brain dialog" (Advanced Settings) and click on the 'Guiding' tab. On that tab, you'll find a setting for 'Calibration step(ms)', and that's where you change the value. There's even a 'Calculate' button that will help you choose an optimal value for the parameter. Once you've set this value, it will be remembered as part of your equipment profile and you probably won't have to adjust it again.
You may also see a calibration failure if you're using a star too close to the celestial pole. In those locations, fixed-length movements in right ascension often move the star only a very small distance. In that case, move to a star location closer to the equator, ideally somewhere in the range of -30 to +30 degrees declination, and re-run the calibration. But if this is not feasible, you can adjust the calibration step-size upward until calibration succeeds. You can always review the results of your last calibration by using the 'Tools' menu and clicking on 'Review Calibration Data' That will open a dialog that shows a graphical representation of the mount's movements along with the values that were computed for guiding your mount. This window is described elsewhere in the Calibration Details section of the help file. As a quick quality check, you can open this window and confirm that 1) the RA and Dec lines are roughly perpendicular and 2) the plotted points are roughly linear with no significant curves, bends, clumping of points, or reversals in direction. If you do see these kinds of odd patterns in the graph, you should probably re-do the calibration. Even with high-end mounts, calibrations can occasionally go awry because of environmental conditions, especially wind and bad seeing."
As a long time Windows user, I'm pretty use to Windows NO HELP if I seek something. But the help files in PHD2 seem to actually try and help.
If the above doesn't help much, hopefully it can give you some help finding more pertinent help.
If I may ask, what is it you are trying to guide on?
I did a search in the Help section of PHD2, "... (
show quote)
IF...if, you are getting this message AND you are picking a star in the North Star zone that is the reason. If you are getting a message that the star is not moving and your guide scope is aimed south. If you are still in question as to what is the cause, run this test - click on GUIDE MANUAL or MANUAL GUIDE not too sure what it is ...but it is under TOOLS. Look at your star and click on N and/or W and click several times to see if the star moves. If it does, your kit is ready to calibrate because pulses are successfully moving the mount. If you then choose a star in the South close to the meridian - THE STAR WILL MOVE....on this trust me.