Hello everyone. I need your opinion: I have only used larger observatory mounts so far and was looking for a mobile setup. So I ordered the AM5N and would like to use it together with the ASI2600MC AIR with focal lengths up to 1200mm. The AM5N has arrived, unfortunately the weather is so bad that I couldn't test it (as always with new hardware). A measurement log of the periodic error is included.
This is the worst curve I've ever seen and now I'm wondering whether the AM5N is even suitable for my purpose or whether the ZWO measurement protocol is irrelevant in the mounts real live. As I said, I have not been able to test it in the last four weeks and I rather return it now than runnning into a long discussion with the dealer. According to the dealer, the mount is within the specifications. However, this only states a deviation of +/+ 10 arc-sec, but not anything about the speed at which oscillations occur within the limit values. You can see very clearly that the mount runs through the "Full Periodic Error" without low-frequency oscillations, but within the "Partial Zoom of Max Periodic Error" it performs enormous spikes with an almost vertical slope of up to 9 arcsec within short periods. Do you have similar measurement curves and do you still manage to obtain round stars at higher focal lengths and exposure times of 0.5 to 1s for your guide cam?
Thank you,
Karl
