black-forest-astronomy
Amateur Astrophotography from the Black Forest, Germany

A truly independent test of the ZWO AM5 mount




In this review, I would like to share my assessment of the new ZWO AM5 with you completely independently, as some people are sure to consider purchasing this mount. I bought the mount myself, so I can talk about the many pros but also a few cons here without restriction.
The products from ZWO have convinced me for several years, at least apart from the relatively high purchase price. With the Asiair I got to know the most comfortable workflow for me. After initial attempts with Sharpcap and NINA, the complete solution from ZWO convinced me, which is why I thought about purchasing the AM5 when the first news about a harmonic drive mount circulated.
I received the mount about 6 weeks ago and was lucky enough to have had a few clear nights to test it out. At the end of the review, I'm happy to show you my first result with it, a shot of the Soul Nebula. Questions, comments etc. can be sent to me via the guest book. I am always happy about a lively exchange with other amateur astronomers.



First I would like to go into the pros of the mount:

- The built quality of the mount is outstanding. It is optically successful and extremely high-quality processed. Even the transport bag convinced me directly.
- The mount communicates directly and completely error-free with the ZWO Asiair. It's actually a convenient plug and play solution.
- The noises of the harmonic drive are very quiet. Not only I but also my neighbors should be very happy about this progress. 

- The accuracy of the mount is really outstanding. Although balancing is not possible due to the construction, it averages a low deviation of 0.5-0.7".

But there are also points of criticism that I do not want to hide:

- The stability of the mount with the associated tripod is not outstanding. ZWO also points this out, but in my opinion you have to take this into account with a mount for over €3000. Due to the missing counterweight, the stability of the setup for objects close to the zenith is already very shaky. You should pay attention to this when taking photos and possibly attach additional weight to the tripod.

- Shortly after the purchase, ZWO wrote to me that it was better not to put the Asiair in the clamp provided for this purpose, which was even advertised in advance (see ZWO advertising images). If you put the Asiair the clamp, the telescope could hit against it and damage could occur.
Overall, that might not be a big deal, but in this price range, something like this should be tried before the mounts are delivered to the customer.

- I am very satisfied with the accuracy of the mount. Nevertheless, there are 2-3 times a night that there is a sudden deviation in the tracking. The reason for this is not yet known to me, but it seems to happen periodically every few hours. But since it only costs me about 3 pictures per night and I can use any other picture, it doesn't bother me too much. I can't say 100% whether it's my mount, but I'll have to spend the next few nights observing the problem.


Overall I am very satisfied with the mount, I would buy it again. It also makes sense without an Asiair, by the way. I am currently testing the use via N.I.N.A. and the Ascom driver. Both seem to work very well. I will also write a test report for this.
Finally, my first picture, which was taken with this mount together with the ZWO ASI 1600MM mono camera. 

The whole setup fits together perfectly. The processes via the Asiair app work excellently with the AM5. There are no problems with the tracking accuracy in connection with the ZWO 1600MM.


IC 1848 - The Soul Nebula

592 x 180 sek SHO; 180 x 60 sek RGB

Total: 32,6 hours



ZWO AM5 Harmonic Drive Mount
Possible connections and the possibly unusable clamp
My Setup with the Asiair Plus, ZWO EAF, ASKAR FMA 400, ZWO EFW, ZWO ASI 1600MM Pro