- nosepiece tube
- ZWO OAG
This camera pairs very nicely with the ZWO OAG and helical focuser. The sensitivity is great and I get dozens of stars with very moderate gain despite the tiny 8mmx8mm prism on the OAG. Along w the helical focuser, it is very easy to get this camera focused and locked into place. I really like that this camera is a "mini" version, and that the sensor is built into the "male end" of the nosepiece. With a non-mini camera, you can add a nosepiece but the sensor remains at the "female end" of the hollow nosepiece tube, creating a distance the length of the nosepiece that you can never shorten. With this mini camera that has the sensor at the male end, I am able to get the sensor right up to the OAG stem by set screw and helical focuser. While this may seem trivial, that distance saved me the trouble of moving my entire OAG up the optical train. I highly recommend this camera for guiding.
I bought this because the very short backfocus requirement makes it a good fit to go with the ASI1600mm, 1.25" filter wheel and OAG. The 1600 has even less back focus which allows it to work with the small filters, so to avoid needing spacers between the filter wheel and the OAG you need something like this camera. It came right up and seems quite sensitive. Also works well with PHD. No negatives to report.
Excellent experience. Great guide cam.
It worked flawlessly with my ASIAIR.
This camera is fine, expensive for a guide-camera, but fine - UNLESS - you’re using it on an ZWO OAG and the AsiAir. Why? Say you decided you need this camera for more sensitivity and the mini fit for your ZWO OAG to work. You want the OAG cuz it’s the thing to use for auto-guiding your long 2032mm FL Celestron SCT which is what OAGs are for. You set up everything and find it won’t work; can’t find stars, the one’s you find are just a boiling mess of light that the AsiAir can’t guide on. Why? Cuz with a long FL like 2032mm your image scale is less then .3” with that 2.9 micron pixel size and the oversampling is just showing you how bad seeing conditions are. Can’t find stars? Your FOV is only about 10’ x 5’ and the speed of your telescope is only F/10 or so coming through that tiny prism in the OAG. Go to a reducer? Why did you buy that long FL then? What’s the work-around? If you could bin that should help a lot, but the 290mm only provides 2x2 binning and the AsiAir auto-guider won’t let you change binning on the guide-camera at all. To make it work try PhD which will change the binning, or reconsider your whole auto-guiding paradigm. If you go back to a traditional guide scope you probably don’t need to spend this much money on the asi290mm guide camera. What it boils own to is you need to match the pixel size to the guiding focal length to be sure it works. This camera might not be the choice for you.
It was the easiest thing to set up on my scope.i love the images and i'am using it for a guide camera . i like the idea of its size ,quality and weight.