Hi All,

I have been trying to get autoguiding to work with my setup.

I have an unsupported mount so I have been trying to use the guider "on camera".

Guide Camera: ASI 120MM mini
Telescope: Questar on a fork mount (equatoirally set up), capable of guiding through ST-4 from the camera although, only in RA and not in DEC.
Software: EKOS on Stellarmate- using the internal guider.

The issue:

I can usually seamlessly polar align using EKOS. however when i guide i deal with a few different issues:
1) sometimes the star keeps getting lost even before calibration is completed: I have tried lengthening exposure time (seems to help)- the remedy the software suggests is expanding the box further (already set at 64 and i have tried 128) or shortening pulses (tried that too)
2) once calibration is completed when it starts autoguiding the RMS error is quite large- sometimes reaches threshold and starts all over again. other times it loses track of the star and then starts autoguiding again. doesnt seem to hold autoguiding constantly.

I have attached a screenshot that may give more detail below. settings I currently have: 1000ms pulses while guiding, 1 second exposures and GPG RA guiding checked in options, contrary to the image below, i have mostly used 2x2 binning. Any help would be much appreciated.
Best,
Omer