ASI294 pro

ASI's Range of Specialised CMOS camera's

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galactique
Posts: 28
Joined: Wed Sep 11, 2019 8:19 am

ASI294 pro

Post by galactique » Sun Apr 05, 2020 5:36 pm

I usually take all my DSO shots at gain of 120, temperature minus 20.

To increase signal, I extend exposure time, say up to 600secs with an Optolong Enhance filter and end up with stackable frames with near zero noise.

If I were to increase the gain to 350, the gain/read noise graphs indicate little change to S/N

Is this the case? Can I double the gain and achieve the same as doubling exposure time ?

Nikon dslr experience tells me this is not correct, but can you comment please ?

best regards

dark energy
Posts: 18
Joined: Wed Feb 27, 2019 9:15 am

Re: ASI294 pro

Post by dark energy » Sun Apr 05, 2020 9:36 pm

Increasing the gain means loosing dynamic range.
If your frames look good: Don‘t change anything. ;-)

galactique
Posts: 28
Joined: Wed Sep 11, 2019 8:19 am

Re: ASI294 pro

Post by galactique » Tue Apr 07, 2020 11:35 am

You are of course correct !

I have homed in on a good solution, so I will stay with it

cheers

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