This has just been posted on the EQ8 Yahoo Group:-
hi,
"To users getting spikes in autoguiding - Synta now confirmed: If using Lodestar and MaximDL for autoguiding, you should set the minimum autoguiding pulse duration in MaximDL to 20ms or similar. Lodestar sometimes sends ultrashort pulses, like 3ms or even shorter, that may cause the ST4 port to hang. Also, if you do not use the ST4 port, but pulse guiding via EQMOD or similar devices, there should be no problem. Here are some pics Hamish Tava posted after solving the bug:
http://ca.skywatcher.com/_english/05...l.php?sid=8044
http://ca.skywatcher.com/_english/05...l.php?sid=8039
They will keep an eye on that issue and come up with an update.
Tommy"
John