Frames Per Second Issue with ZWO Mono Camera

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sandconp
Posts: 81
Joined: Thu May 31, 2018 7:48 pm

Frames Per Second Issue with ZWO Mono Camera

#1

Post by sandconp »

I was using my new ZWO 174 MM (mono) camera for the first time on Jupiter and Saturn last night. For some reason, I was only able to get an average of 30 FPS on those two planets. I had the turbo mode on 100 and then I turned it down to 80 and Auto and I got the same result. My images were 640X480 so I would of had expected faster frame rates. I was using Mono 8.

What's weird about this I can use the same camera on the Sun using 640x480 and I get close to 300 FPS so why wouldn't I get the same on Jupiter and Saturn? It will also be nice if the FPS were logged in the Camera Setting.TXT member unless I missed it somewhere. My concern is the quality won't be as good at 30 FPS Versus 300 FPS.

I have done imaging before with my OSC ZWO 178MC camera but I don't recall what my FPS was.

I am running the latest Beta Version which expires on July 1st.
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Menno555
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Re: Frames Per Second Issue with ZWO Mono Camera

#2

Post by Menno555 »

Hello

What were your exposure times?
For the sun you need way shorter exposure times and you can get high FPS.
As for the planets you need a longer exposure time, so your FPS will be lower.

Menno
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admin
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Re: Frames Per Second Issue with ZWO Mono Camera

#3

Post by admin »

Hi,

yes, as Menno says a relatively long exposure will limit your FPS - for instance if you set the exposure to 50ms, you cannot get more than 20fps, 100ms cannot go above 10fps, etc.

Another thing that could limit the frame rate is a USB2 rather than USB3 connection.

Robin
sandconp
Posts: 81
Joined: Thu May 31, 2018 7:48 pm

Re: Frames Per Second Issue with ZWO Mono Camera

#4

Post by sandconp »

Thanks for the responses and that makes sense.
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