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ASI294MC Pro, USB bandwidth and video preview frame rate

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Hi,

I’m using Astroberry on a RPi4 and a ASI294MC Pro cam connected via USB 3.0. When doing a full size video preview in Ekos capture module, I get a max. frame rate of approx. 3 fps. I this normal or is there room for improvement? When I played with the USB bandwidth setting (set from 40 to 70), I once managed to get 10 fps, but this was not reproducible. Now I’m back on 3 fps regardless of the bandwidth setting.

Firecapture (on the same RPi4) manages to get 10-12 fps max.

What are your fps’ using ASI USB 3.0 cams? Am I missing something, or am I doing something wrong?

Thanks and CS
Bernd
254/1450 mm Newton, 130/730 mm APO, 70/336 mm APO, EQ6-R, ZWO EAF focusers, DeepSkyPro 2600c, ASI183MM, Intel NUC 8i5, Ubuntu 22.04
2 years 9 months ago #51986

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I do get ~3.7fps (raw 16bit) streamed to my client computer with an ASI 294MC Pro connected to the server, bandwidth set to 40.
With the camera connected to my laptop directly, I do get ~6.8fps.
2 years 9 months ago #51998

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Thanks for the reply, so your fps is in the same ballpark. Seems to be what you can get with this cam.
254/1450 mm Newton, 130/730 mm APO, 70/336 mm APO, EQ6-R, ZWO EAF focusers, DeepSkyPro 2600c, ASI183MM, Intel NUC 8i5, Ubuntu 22.04
2 years 9 months ago #51999

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I have pretty much the same question but with the ASI 183MC Pro on USB 3.0. I see you list having a 183.
According to the spec for this camera it is capable of 19fps@5496x3672 to 308fps@320X240

So a few questions if I may:

1. Is the indicated fps only related to the preview and the actual capture is faster ?

2. Why I can only achieve up to around 6-8 fps when running at 5496x3672 instead of the advertised 19 ?

3. Is running the guide camera (QHY 5L) off the ASI 183 USB hub causing the issue, and it could be improved by wiring the two separately ?

4. How would I switch to the other video modes to achieve the higher frame rates ? I checked in Indilib settings for the camera but didn't see it.

Thanks

Damian
WO ZS61 II / Skywatcher 150PDS, ASI183MC Pro, ZWO 120MM-S Guider, ZWO EAF, HEQ5 Pro, INDI/EKOS on Ubuntu 20.04
10 months 2 weeks ago #81558

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Frame rates can also be bottlenecked by the frame exposure time.
INDI/KStars on Raspberry Pi 4, 4gb
Raspbian Buster with AstroPi3 script configuration
Skywatcher HEQ5 Pro Mount
Canon 600D Camera
Orion SSAG/ASI120mm @280mm Guide Scope
PHD2
Waveshare Stepper Motor Board - DIY Focuser
Adafruit GPS Module
Generic Bluetooth Joystick.
Startech 7 port powered USB Hub.
10 months 2 weeks ago #81564

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