I’ve been struggling with tracking problems in using my iOptron AZ Mount Pro. It seems fine for many of my EAA observing/Imaging sessions with short 3-8 second exposures but it is so far unable to handle exposures from 8-30 seconds long which I may want to do on occasion. If I ever wanted to take a try at full AP, it would be impossible unless sub exposures were less than 8 seconds.
I can can probably trade the AZ Mount Pro in towards an iOptron EQ mount but my home observing sight does not allow me a view of the north sky and definitely not a view of the NCP. Best I can do for views northward are partial high-altitude views from about 270-340 degrees.
I’ve reviewed the iOptron CEM 40 manual and read about it variety of alignment procedures but I find it confusing and I’m still not clear on whether there’s a reasonable procedure to get a good NCP alignment without views to the north and within 15 degrees of the NCP.
I’m hoping some of you have this mount ( or direct knowledge of it) and can provide me with some input on whether or not it will work for me and my limited sky views from south - northwest. Thanks in advance for any advice or suggestions you can offer - including alternate mount suggestions or ideas on improving performance of the mount I have.
PS: If anyone is interested to view my video of the mount’s tracking error, the link below takes you to a short video showing Spica within the Sharpcap reticle view. I believe the movement of Spica that it shows takes place over 60 seconds. The camera is oriented correctly so I believe the error shown is indicating that the mount’s sidereal rate is tracking too slowly. Spica is not in an area affected by much field rotation.