ZWO ASI 120 MINI Product Description Camera Sensor The ASI120MM Mini camera integrates the AR0130CS 1/3′′ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-series of cameras from ZWO. This camera has 1280 x 960 pixels with a pixel size of 3.75 μm x 3.75 μm. It provides 12-bit ADC and the QE peak is almost 80%.
ZWO ASI 120 MINI Product Description Camera Sensor The ASI120MM Mini camera integrates the AR0130CS 1/3′′ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-series of cameras from ZWO. This camera has 1280 x 960 pixels with a pixel size of 3.75 μm x 3.75 μm. It provides 12-bit ADC and the QE peak is almost 80%.
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Prices last updated 5 Sept 2026.
ZWO ASI120MM Mini USB2.0 Mono Guide Camera
ZWO ASI 120 MINI Product Description Camera Sensor The ASI120MM Mini camera integrates the AR0130CS 1/3′′ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-series of cameras from ZWO. This camera has 1280 x 960 pixels with a pixel size of 3.75 μm x 3.75 μm. It provides 12-bit ADC and the QE peak is almost 80%.
ZWO ASI 120 MINI Product Description Camera Sensor The ASI120MM Mini camera integrates the AR0130CS 1/3′′ sensor (4.8 mm x 3.6 mm). It is a new model in the “mini”-series of cameras from ZWO. This camera has 1280 x 960 pixels with a pixel size of 3.75 μm x 3.75 μm. It provides 12-bit ADC and the QE peak is almost 80%.
Last updated at 09/05/2026 04:01:56
ZWO ASI120MM-MINI 1.2 MP CMOS Monochrome Astronomy Camera with USB 2.0# ASI120MM-MINI
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ZWO ASI120MM Mini Monochrome Astronomy Camera ASI Planetary Solar Lunar Imaging/Guiding USB2.0 ASI
Free delivery
Zwo Asi120mm Mini Guide Astronomy Camera 1/3" Usb2.0 For Planetary
Delivery $22.92
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ZWO ASI120MM MINI [MONO] Guide Camera for Astrophotography
Delivery between 8–12 Sept $15.25
ZWO ZWO ASI120MM Mini (mono) (3.75 microns) USB 2.0
ZWO ASI120MM Mini
Delivery $132.37
ZWO ASI120MINI Autoguide Camera - ZWO ASI120MM MINI
Free delivery between Mon – Thu
ZWO ASI120MM MINI MONO GUIDE CAMERA | Testar Australia
Delivery between 8–15 Sept $10.30
originally posted on agenaastro.com
GUIDESCOPE:Everyone knows this is an excellent guide scope.If you have very large scope or sensitive imaging needs, maybe you might want a bigger one (like the ASI290); ut this model is very dependable, very small, relatively inexpensive, and works very very well.AGENA ASTROI think I have purchased 90+% of my astro equipment from Agena Astro -prices are great, availability is great, and when I made a mistake in my order, or needed a change -their customer support has always been very positive and very responsive! They are a great store!MarkI attached an image of M45 for which I used the ZWOASI120mm Mini as the guide scope!.
originally posted on agenaastro.com
The ASIAir unit itself (Raspberry PI computer + software) works well. However, connection to the 120MM mini guide camera can be problematic: I experienced many instances of "exposure failure" that required unplugging and replugging the guide camera until the ASIAir unit was able to load images from the camera. The included short USB2 cable worked much more reliably than the included long USB2 cable. However, the short cable is only 1.5' long, so not the most convenient if connecting directly to the ASIAir unit (as opposed to connecting to the USB hub on the imaging camera–which I couldn't do, as I was using a DSLR). Incidentally, most Canon and Nikon DSLRs are supported, and it is easy to set up simple sequences of image captures for lights, darks, etc.The guide ... MoreThe ASIAir unit itself (Raspberry PI computer + software) works well. However, connection to the 120MM mini guide camera can be problematic: I experienced many instances of "exposure failure" that required unplugging and replugging the guide camera until the ASIAir unit was able to load images from the camera. The included short USB2 cable worked much more reliably than the included long USB2 cable. However, the short cable is only 1.5' long, so not the most convenient if connecting directly to the ASIAir unit (as opposed to connecting to the USB hub on the imaging camera–which I couldn't do, as I was using a DSLR). Incidentally, most Canon and Nikon DSLRs are supported, and it is easy to set up simple sequences of image captures for lights, darks, etc.The guide scope itself is extremely basic and focusing is difficult at best. Quick, rough focusing is best accomplished by varying the back focus of the camera (moving the camera in/out within the scope barrel). The camera needs a lot of back focus; the extension provided with it is absolutely necessary). Fine focus then relies on screwing/unscrewing slightly the objective lens assembly–there is no focuser as such–and this process is extremely fiddly, a royal pain in the rear. However, once infinity focus is dialed in, the scope/mini camera assembly can be left alone (and, in fact, is best left alone).As for the ASIAir functions, they work surprising well with a minimum of effort. Plate solving is fast and accurate and, once the guide camera is downloading images, it provides good guiding. I was able to guide at ~1.5" RMS under poor seeing on my miserable AVX mount, which I consider a spectacular achievement. A planetarium program like SkySafari can be connected to the mount through the ASIAir and makes GOTOs easy.All in all, this is not for rank beginners, but it can be made to work as advertised, and it provides a simple an inexpensive plate solving, guiding, and sequence capture solution. BTW, the "instruction manual" is rather basic and leaves out a lot of details that could help a beginner get the system to work as intended. Recommended for experienced users; not recommended for beginners.
originally posted on firstlightoptics.com/
I bought this earlier this year and have enjoyed getting to grips with it. It's so easy to setup. I have it on my own network, via both wifi and fixed ethernet, which makes operating it a breeze from indoors. It also makes accessing images fairly easy, as you can see it as a network drive, in effect. Cannot recommend this bundle enough. The build quality is superb. I have to point out, that in the 5 weeks since I bought it, I have had nothing but cloud, so have not got a single image, either with my DSLR setup or telescope. That sucks, but nothing I can do about it, but at least I can use my time geeking out on the AsiAir and other PC based apps. Stop dithering (!) and just buy one. You know you want to...
| Sensor | 1/3′′ CMOS Aptina AR0130CS (Mono) |
| Resolution | 1.2 Megapixels 1280×960 |
| Pixel size | 3.75 μm |
| Sensor size | 4.8 mm x 3.6 mm (6.00 mm diagonal) |
| Quantum efficiency | 80% |
ZWO ASI120MM-MINI 1.2 MP CMOS Monochrome Astronomy Camera with USB 2.0# ASI120MM-MINI
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ZWO ASI120MM Mini Monochrome Astronomy Camera ASI Planetary Solar Lunar Imaging/Guiding USB2.0 ASI
Free delivery
Zwo Asi120mm Mini Guide Astronomy Camera 1/3" Usb2.0 For Planetary
Delivery $22.92
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ZWO ASI120MM MINI [MONO] Guide Camera for Astrophotography
Delivery between 8–12 Sept $15.25
ZWO ZWO ASI120MM Mini (mono) (3.75 microns) USB 2.0
GUIDESCOPE:Everyone knows this is an excellent guide scope.If you have very large scope or sensitive imaging needs, maybe you might want a bigger one (like the ASI290); ut this model is very dependable, very small, relatively inexpensive, and works very very well.AGENA ASTROI think I have purchased 90+% of my astro equipment from Agena Astro -prices are great, availability is great, and when I made a mistake in my order, or needed a change -their customer support has always been very positive and very responsive! They are a great store!MarkI attached an image of M45 for which I used the ZWOASI120mm Mini as the guide scope!.
The ASIAir unit itself (Raspberry PI computer + software) works well. However, connection to the 120MM mini guide camera can be problematic: I experienced many instances of "exposure failure" that required unplugging and replugging the guide camera until the ASIAir unit was able to load images from the camera. The included short USB2 cable worked much more reliably than the included long USB2 cable. However, the short cable is only 1.5' long, so not the most convenient if connecting directly to the ASIAir unit (as opposed to connecting to the USB hub on the imaging camera–which I couldn't do, as I was using a DSLR). Incidentally, most Canon and Nikon DSLRs are supported, and it is easy to set up simple sequences of image captures for lights, darks, etc.The guide ... MoreThe ASIAir unit itself (Raspberry PI computer + software) works well. However, connection to the 120MM mini guide camera can be problematic: I experienced many instances of "exposure failure" that required unplugging and replugging the guide camera until the ASIAir unit was able to load images from the camera. The included short USB2 cable worked much more reliably than the included long USB2 cable. However, the short cable is only 1.5' long, so not the most convenient if connecting directly to the ASIAir unit (as opposed to connecting to the USB hub on the imaging camera–which I couldn't do, as I was using a DSLR). Incidentally, most Canon and Nikon DSLRs are supported, and it is easy to set up simple sequences of image captures for lights, darks, etc.The guide scope itself is extremely basic and focusing is difficult at best. Quick, rough focusing is best accomplished by varying the back focus of the camera (moving the camera in/out within the scope barrel). The camera needs a lot of back focus; the extension provided with it is absolutely necessary). Fine focus then relies on screwing/unscrewing slightly the objective lens assembly–there is no focuser as such–and this process is extremely fiddly, a royal pain in the rear. However, once infinity focus is dialed in, the scope/mini camera assembly can be left alone (and, in fact, is best left alone).As for the ASIAir functions, they work surprising well with a minimum of effort. Plate solving is fast and accurate and, once the guide camera is downloading images, it provides good guiding. I was able to guide at ~1.5" RMS under poor seeing on my miserable AVX mount, which I consider a spectacular achievement. A planetarium program like SkySafari can be connected to the mount through the ASIAir and makes GOTOs easy.All in all, this is not for rank beginners, but it can be made to work as advertised, and it provides a simple an inexpensive plate solving, guiding, and sequence capture solution. BTW, the "instruction manual" is rather basic and leaves out a lot of details that could help a beginner get the system to work as intended. Recommended for experienced users; not recommended for beginners.
I bought this earlier this year and have enjoyed getting to grips with it. It's so easy to setup. I have it on my own network, via both wifi and fixed ethernet, which makes operating it a breeze from indoors. It also makes accessing images fairly easy, as you can see it as a network drive, in effect. Cannot recommend this bundle enough. The build quality is superb. I have to point out, that in the 5 weeks since I bought it, I have had nothing but cloud, so have not got a single image, either with my DSLR setup or telescope. That sucks, but nothing I can do about it, but at least I can use my time geeking out on the AsiAir and other PC based apps. Stop dithering (!) and just buy one. You know you want to...
First, so glad to say that the shipping was super fast. The same day that I bought this item, was ready to pick up by usps.Regardless the kit, amazing quality. Easy to use and seems reliable. I was able to take an exposure of 6 minutes! With a 360mm Zenithstar Z61. No clear skies the last 2 weeks, so no more testing for me.Check the camera compatibility first, because you won't me able to squeeze 200% this guiding mini computer if your camera is not supported.Be advised, this does not brings a way to connect the asiair to the power. You need to buy an ac/dc adapter on your own.
Cannot use it with PHD-2 as a guide camera while using an ASI533MC Pro with SharpCap. Sharp Cap and PHD-2 will not play nice with this combo. ASI120 Mini will not stay connected. Tried all the on-line suggestions, but no joy. Finally got QHY mono guide camera, which does play well with PHD-2 and SharpCap. Camera works great with SharpCap as a stand-alone camera, and works fine in PHD-2 if SharpCap is NOT running. But, if you are using PHD-2 with this camera and SharpCap with the ASI533, you will NOT like the result.
Good shipping speed. Great camera, use it for guiding. Worked flawlessly with PHD2 on my MacBook Pro. Instantly recognized it without a hiccup. Highly recommend this little gem if you want a no hassle setup with you rig.
Bought this as a guide scope for my 72mm refractor (WO Megrez 72). I set it up in day time using the ASICAP software from the ZWO website to check all was working and to get rough infinity focus by adjusting the camera position within the miniscope. Fine focus was then achieved under the stars using the helical focuser. The only problem I had was that initially my PHD2 guiding software wouldn't recognise the camera (though it did recognise my other ZWO imaging camera). After updating to the latest version of PHD2 this problem was fixed. It was a little off-putting to see how much less sensitive/noisier the guiding output is compared to my imaging output, and I do wonder whether a 50mm guide scope might be a better combination with the ASI120. But having said that so ... MoreBought this as a guide scope for my 72mm refractor (WO Megrez 72). I set it up in day time using the ASICAP software from the ZWO website to check all was working and to get rough infinity focus by adjusting the camera position within the miniscope. Fine focus was then achieved under the stars using the helical focuser. The only problem I had was that initially my PHD2 guiding software wouldn't recognise the camera (though it did recognise my other ZWO imaging camera). After updating to the latest version of PHD2 this problem was fixed. It was a little off-putting to see how much less sensitive/noisier the guiding output is compared to my imaging output, and I do wonder whether a 50mm guide scope might be a better combination with the ASI120. But having said that so far the guiding performance has been good and appears well-matched to the imaging optical chain. And the scope/camera combination is very good value so I'm very happy with my purchase.
This is the second ASI120MM mini I have bought. I wanted to build two scope rigs complete and not have to take apart to swap scopes. These are very sensitive and although usually just used for guiding, they can take very detailed images. Oddly, these mini guide cameras need to be slid out from the scope quite a bit to achieve focus. My Svbony 30mm has a lot of focus travel, so I may have to explore a closer connection. But for now it works great for guiding the RedCat51 on the AM5 mount. Looks good too. You can also use this camera as an electronic finder. Just designated it on the guide scope as the Main Scope, slew to target, plate solve to center, and use the main scope to view with an eyepiece. Very easy.
Great little guide camera. The performance has definitely been worth the price. I hadn't been using an auto-guider when I first got started, but the difference is phenomenal. Instead of throwing out 1/3 or more of my frames, I throw out maybe 1/16 of my frames now. Couldn't be happier with this little cam.
We bought the ZWO mini Finder guider and ASI120mm - mini bundle as part of a portable rig that included the iOptron SkyGuider Pro, the William Optics RedCat v1.5, iOptron Ball Head, iOptron tripod and the ZWO ASIair Pro. We ordered all at the same time but were aware that some had a longer lead time than others. Throughout FLO were brilliant at keeping us informed and shipped some items earlier than agreed because we were still waiting for the tripod. Previously we have only used a GoTo Celestron 8SE so getting used to the small rig has required some effort but there are some great YouTube videos out there to help and we now we feel we can write a review of the components. The mini scope has been working well; initially the focus ring was very stiff to move but it ... MoreWe bought the ZWO mini Finder guider and ASI120mm - mini bundle as part of a portable rig that included the iOptron SkyGuider Pro, the William Optics RedCat v1.5, iOptron Ball Head, iOptron tripod and the ZWO ASIair Pro. We ordered all at the same time but were aware that some had a longer lead time than others. Throughout FLO were brilliant at keeping us informed and shipped some items earlier than agreed because we were still waiting for the tripod. Previously we have only used a GoTo Celestron 8SE so getting used to the small rig has required some effort but there are some great YouTube videos out there to help and we now we feel we can write a review of the components. The mini scope has been working well; initially the focus ring was very stiff to move but it is working smoothly now, however, getting a tight focus has proven a bit tricky for a beginner. The camera appears to be working well with the ASIair and iOptron tracker but we need some more clear nights to fully assess its performance especially over longer runs and we might also need to play around with some of the aggressiveness settings on the ASIair to achieve optimal results. FLO have commented that the mini guide scope can be tricky to focus, the focus zone is quite small and easy to overshoot. Luckily as long as focus is 'good enough' it won't really affect guiding performance, once you have it close you should be fine.
| Sensor | 1/3′′ CMOS Aptina AR0130CS (Mono) |
| Resolution | 1.2 Megapixels 1280×960 |
| Pixel size | 3.75 μm |
| Sensor size | 4.8 mm x 3.6 mm (6.00 mm diagonal) |
| Quantum efficiency | 80% |
