M68 OAG and Mini cameras

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RoySalisbury
Posts: 39
Joined: Sat Oct 15, 2016 4:43 am

M68 OAG and Mini cameras

Post by RoySalisbury » Sat Jan 11, 2020 8:24 pm

Which one of the mini cameras is the best pairing with the M68 OAG? I have the 174MM mini, but I think that the OAG might not fully cover the sensor of that camera.

Also, what is the backfocus of the camera once placed in the OAG? My flattener requires 55mm, and the camera will have that, but will the OAG's camera?

Roy

PartlyC
Posts: 2
Joined: Sun Mar 31, 2019 2:55 pm

Re: M68 OAG and Mini cameras

Post by PartlyC » Sun Jan 12, 2020 4:57 pm

I have the same question.

The M68 OAG info says: "6. For guiding, only can work with ASI mini camera currently." It does not say why, so I thought it might be the backfocus difference, but that is a guess.

I know that with the 071 and at least some other "main" cameras that have the USB2 hub but support USB3 (and any other USB3 connection), that if you connect the 174 or 290 mini USB2 cameras, you can only use USB2 to run the main camera... I wound up purchasing the 120 USB3 to keep from having too run separate cabling, etc. just to drive the autoguider. From your specs, even this won't work now.

So, do you have a USB3 mini? Or will this actually work with the 120MM USB3 (non-mini)? Or is there a fix for the USB2 problem? Running a high pixel count camera is rough on USB2, and I have to modify my NUC to even support USB2 (and some laptops don't even have it anymore).

Thank you!!

-Mike

RoySalisbury
Posts: 39
Joined: Sat Oct 15, 2016 4:43 am

Re: M68 OAG and Mini cameras

Post by RoySalisbury » Sun Jan 12, 2020 5:33 pm

I also was planning on connecting my ASI174 mini (USB2) to the hub on the ASI6200. If this is not supported ,and causes the main imager to drop to USB2 speeds, then that is a SERIOUS design flaw. Why would you advertise a camera with USB3 connection and extra USB2 ports ...PLUS specify that the mini cameras are the ones the OAG is made for (and the new OAG is made for the ASI6200) .. and then not have it actually work.

I have extra USB 2 ports available, but whats the use of the 2 port hub on the camera if you can't use it.

Roy

PartlyC
Posts: 2
Joined: Sun Mar 31, 2019 2:55 pm

Re: M68 OAG and Mini cameras

Post by PartlyC » Mon Jan 20, 2020 4:51 pm

Roy,

It looks line things have improved since I last tried, and both mini cameras are working through the on-camera hubs. Looks like I may have had driver issues when I tried the first time (at least 1 year ago), and a bad USB2 cable this time (embarrassed about THAT one). Zwo worked with me on it. At least on Windows, it looks good!

Anyway, I am no longer concerned! TSX connects to both just fine.

-Mike

RoySalisbury
Posts: 39
Joined: Sat Oct 15, 2016 4:43 am

Re: M68 OAG and Mini cameras

Post by RoySalisbury » Mon Jan 20, 2020 7:08 pm

This is good to hear...

Thanks for following up.

Katherine.Tsai
Posts: 520
Joined: Fri Dec 07, 2018 10:24 am

Re: M68 OAG and Mini cameras

Post by Katherine.Tsai » Tue Feb 11, 2020 7:28 am

Glad to know the problem is solved.

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