Good, much as expected!

My ZWO ASI120MM Mini is working great. I have it on my Celestron 8" Newtonian and connected "on camera" to the AVX mount. I'm using it as a guide camera and, so far, it's working great! The setup was easy and after I figured out how to use it with PHD2, things went smoothly.

This is my first ever purchase of a CMOS camera, and i have been having such a blast. Easy to use, and such a handy equipment to have for Guiding Camera. The guys here at OPT corp has been very helpful guiding all my journey towards Astrophotography. Much recommended!

Excellent camera image and sensibility. Excellent OPT customer service and technical support. Always is nice to deal with you OPT

I originally purchased a QHY5L-II guide camera and had issues right away. I spent a few weeks doing everything from parsing event logs and windows crash reports (yes, blue screens!) to formatting and reloading windows on my laptop to get the QHY camera to work. It didn't PHD2 and TheSkyX would crash while using the QHY camera after about 10-30 minutes of use. I had a **** of a time finding stars as well. I returned the QHY Camera for a ZWO 120mm Guide Camera. I Immediately plugged it into my imaging laptop. No need to download drivers, because I have them for the ASI1600MM camera I image with. For 24 hours, I ran the camera in PHD2 in my home office. I never had a single error, glitch or crash in any software. For two weeks now, I've been able to image all night with PHD2 running in the background, guiding happily. If you have an OAG, and need a good camera, this will work. If you already have a ZWO camera and have no stability issues with the software this camera will do everything you need it to do. I am going to knock a star off the review, however, because in my experience this camera can be quite noisy when doing exposures under 1s. Guiding with 2x2 binning and 3s subs however gives amazing SNR for guiding.

Item was delivered fast and on time.