I’ve installed a Nexdome rotation kit on my 8’ Exploradome. The installation went really well, the stepper has no problems rotating the dome and the software plays nice with SGP. My problem is the sync of the dome slit to the scope, it’s consistently off by roughly 8 degrees on all targets. I’ve remeasured the parameters used in the Ascom hub and even tried adjusting each one to no avail. The home position magnet is set properly and it syncs to home.
How should I go about troubleshooting this problem? Is there one parameter I should be looking at? Any help would be appreciated.
Alex
Argn .. there is always something ;) .. and as I don't use Windows I had assumed (wrongly) that there was a way to change the number of steps per rotation in the ASCOM NexDome settings.
Ok, once you have figured out the value, you can update it using a serial terminal and sending the proper command.
I use CoolTerm usually but any serial terminal will do.
Connect at 115200 bauds, 8 bit, no parity, 1 stop bit ( aka 115200 8N1).
The send this command with a carriage return and line feed at the end :
@RWR,<new step value>
So if the new step value is let's say 54123 you would send @RWR,54123 (hitting enter should send the CRLF (\r\n), specially if you use CoolTerm as it's the default).
Rodolphe