Hi,

I'm new to Kstar/Ekos and also new to this forum. I've recently upgraded from a DSLR to a veTEC 571 C.

In general, the camera works great with KStars, the only problem is the download speed when connected to my Celeron J4125 mini PC over USB3. It averages around 2.8s for a 16 bit raw fits file.
On my Ryzen 9 on the other hand with the same software setup, the download only takes around 0.7s.

The mini PC I'm using is one of these: www.amazon.de/dp/B09DCBZK17/ref=pe_27091401_487024491_TE_item

I'm wondering what would cause these slow download rates. Is it a problem with the USB controller on the mini PC or a camera driver related issue?

It's running:

• Ubuntu 22.04.03 LTS with kernel 6.2.0-26
• KStars 3.6.6 Build 2023-08-18T09:00:46Z
• indi_toupcam_ccd driver Version 2.1.
• Camera model is ATR3CMOS26000KPA

Cheers
Andre

Hi all,

another newcomer here. First of all, let me thank you very much for this great piece of software, which I enjoy very much.

As the OP, I have very slow download speeds with this camera (I have the TS version, which is a clone of the original ToupTek version, if I'm not mistaken). Coincidentally, I own the same MiniPC with the same Celeron J4124. I got download speeds of about 2 seconds. Before that, I used a 2-GB(!) AstroBerry and there it only took 0.7 seconds.

I tried different USB cables, also very expensive ones, and tried it with a (powered) hub, but also by directly connecting it to the MiniPC. There was no measurable difference in speed.

My system is also very similar to that of OP:

• Ubuntu 22.10
• KStars 3.6.5 Stable Build: 2023-07-04T12:50:58Z
• indi_toupcam_ccd driver Version 2.1.
• Camera model is ATR3CMOS26000KPA

I also want to note, that I own another ToupTek camera, which I use for Guiding, the G2M178C. This is also relatively slow. Even with 2x2 binning it takes more than 1 sec, although I'm not sure, if the binning properly works, as it complains sometimes that 2x2 binning is not supported (this is a relatively recent message). Relatively frequently, this camera fails with an exposure timeout. (At least once per hour on average.)

Best regards
Benjamin