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StarGuider Pro tracking error

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#1 requiemjp

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Posted 29 November 2020 - 01:31 PM

I started astrophotography and got the iOptron StarGuider Pro a couple of months ago. I have noticed regular tracking errors in my photos. Recently, I started auto-guiding with PHD2. The tracking graph confirms my observation.

 

Screen Shot 2020-11-28 at 9.25.22 PM.png

 

Even with good balancing and polar alignment, I got huge track error spikes in about every 9 minutes. This happens regularly regardless of the payloads on the mount. PHD2 even complaint that the mount won't respond to adjustment during the error spikes. Is this normal? How can I fix this issue? Did I get a defective unit?
Please advise. Thank you!



#2 Jim Waters

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Posted 29 November 2020 - 02:25 PM

I don't know the period of the worm-cycle but it looks like you have something going on with the worm.  If its still under warranty I would contact iOptron and make arrangements to send it back.



#3 requiemjp

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Posted 30 November 2020 - 05:59 PM

I don't know the period of the worm-cycle but it looks like you have something going on with the worm.  If its still under warranty I would contact iOptron and make arrangements to send it back.

Thanks for the suggestion.

 

I contacted iOptron and they instructed me to check the worm as well.

It turns out the worm was damaged out of box. Sending it back for repair.  




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