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Welcome to the SS-One Astronomy Equipment forum.

SS-One is a Japanese maker of astronomy equipment, which includes mounts, mount controllers, and camera controllers for autoguiding, polar-alignment, and imaging.

Some software developed by SS-One to run on the Raspberry Pi will be open-sourced, so please bring your questions, discussions, suggestions and imaging results here.
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Is there any chance of them supporting newer hardware? I have several newer pi's and would love to try this out, I have the screen and button interface but a newer pi. Kind of frustrating. There are some newer things out there to compete like Stellarmate and the new ASIAIR. I am hoping that SS-One will support newer hardware or it is pretty much a dead product. The old boards are hard to find with the older processor.

I'd like to report a successful test of the SS-One guider on my ZEQ25 Ioptron mount. I used a custom fl=150mm f/3 guidescope with a ZWO ASI120MC-S. The rPi version is a 2B v1.1 (Broadcom BCM2836 SoC) with a 3.5 480x320 touch display (ILI9486 chip and XPT2046 touch controller) I got from an ebay vendor. The install of "ssonecmos0303" version went smoothly. I only used the autoguide function, and not CMOS capture and used it with my NEX-5n mirrorless camera with an Astrotech RC 6" 1350mm FL ota.

It was all surprisingly very easy to use and straightforward. I think i was so surprised it started calibrating on the first attempt I had to ask if things were working as expected. Setting focus was no problem with the live view and adjusting gain, and had no issue finding and selecting a star.

The screen is VERY bright, and not such a positive feature for dark sky use and no way to dim it, but my particular solution will be to 3D print a case and flip cover when not in use. Dave suggested an extra tinted screen, but I'd rather keep the touchscreen functionality.

Thank you Dave for the guidance and thanks to the developer for sharing.

The absolute biggest advantage of this is the low power consumption frees me from being close to an outlet to power an overly built laptop for the purpose of guiding. I found ST4 guiding just as adequate as ASCOM using PHD2.

Hi all,
I'd like to know if there are any SSOne Kodo users here? I'm thinking of the mount conversion for my EM-10, but am still on the fence about it since it involves a reasonably significant outlay, plus modification of the gears which means I will be unable to return the mount to its original condition.
Any feedback, comments etc on it?

Hello group and thank you for letting me join the discussion. I just bought the ss-one Zwo controller but I haven’t used it yet.

I use a Zwo 294 mc cool.
I noticed that the gain setting in the ss-one goes from 1 to 25.
In the ascom driver the gain has a much larger range.
I usually shoot at unity gain which is 120. Does anybody know what that corresponds to in the ss-one controller?


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Here are the system diagrams for the setups I've been using. Click on the link to see the 3 diagrams. The first one is for the autoguider-only system. The second is for the imaging (capture) system. The third is the autoguider/capture combo system which is using the latest code. This is the one I'm focusing on since it only requires 1 raspberry pi for my setup.

Hi Dave,

Is there still a preference to use a Pi 2B? Other than wifi, and slightly more power consumption, what other potential difference to 3 or later?

And what compatible cameras for guiding, other than ZWO ASI120/SS ONE Cam? I have an older QHY5/Orion SSAG.

Can you show/explain what the UI buttons used with the Geekworm 6 button display case command? Is there also a similar button interface if I used a RF keyboard? For something like this, I don't expect touchscreen to be the preferred interface.


I recently got the ZWO Image Capture DX which I use with my ASI 1600 MC-Cool. I have a few issues:

The ZWO Image Capture DX does not seem recognize my GPS receiver unit (GlobalSat BU-353-S4). Is there a list of compatible devices, or anyone know how to troubleshoot this?

Also, is there a way to capture the boot-log from the ZWO Image Capture DX to a PC for closer inspection? I see there are a couple of error messages flashing by, but they scroll too fast to read.

Finally, the colour-images produced are not debayered correctly. This is a bit annoying, but of course I use the raw-files for my processing. So It is not a big issue.

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A new (experimental) version of the SS-One imaging program for ZWO cameras is available now for download.

This runs on the same hardware the current image capture program but also includes the autoguider functionality. So you can be autoguiding with an SS-One autoguider (ZWO ASI120 inside), and simultaneously image with another ZWO camera. The catch is that it's experimental and requires that you plug the autoguider camera into the imaging camera's built-in USB hub (power the camera's 12V input up first). Feedback on problems as well as successful use is requested along with your hardware setup. You can post here when reporting results.

When you power up your Raspberry Pi, you'll find a lot more menu functions on the main menu screen. These include control for a go-to mount as well as a polar finder. These functions will not do anything as they are intended for a complete integrated controller which will control an SS-One mount to be carried by Hutech later in 2018. Most of the autoguider and imaging functions operate as described in the manuals for the existing separate programs, so refer to those documents for basic operation. Enhanced functionality includes the capability to dither guiding in coordination with the camera, but I haven't tried these yet.

So far, the ASI600MC and ASI183MC as the imaging camera have been tested with an SS-One autoguider, which has an ASI120 inside. A stock ASI120 (with guide port) should work identically to the SS-One autoguider.

For convenience, here's my page of SS-One download links:

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Here are some notes I wrote up about the ZWO Capture program which go beyond just using it via the touch-screen interface -- compatible hardware accessories, remote access, etc. (more to come)...
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