Handling noise in Pixinsight with Vaonis telescopes non-destructively - Forums

Topic starter

Nov 26, 2025

A quick question to you all guys, along this beautiful captured M33. How do you handle noise in your image in Pixinsight with a non-destructive workflow?

In my opinion, it is quite random with the Vaonis telescopes how much noise you get in your raw's. If light pollution is slightly there, you can expect much more gradient and a lot more noise, it seems. Even with NoiseXTerminator you have a hard to edit picture.

If I am looking at another picture from a "normal" amateur rig, they seem to have much less noise in their raw's.

Even if I am collecting up to 8 hours of data, it's quite terrible in comparison. What is the reason and can someone help me?

📷 Messier_33 (1).jpg

Andre Vilhena

Nov 26, 2025

Hello,

What you mention about Vaonis is valid also for other setups but in any case, I don’t think you can get noise reduction to be a non-destructive process. But you issue seems to be not getting the result you expect, I think - could you please let us know your workflow?

Rainer Ehlert

Frequent contributor

Nov 29, 2025

Devon Maddox Brunner · Nov 26, 2025, 09:06 AM
o7
A quick question to you all guys, along this beautiful captured M33. How do you handle noise in your image in Pixinsight with a non-destructive workflow?
In my opinion, it is quite random with the Vaonis telescopes how much noise you get in your raw's. If light pollution is slightly there, you can expect much more gradient and a lot more noise, it seems. Even with NoiseXTerminator you have a hard to edit picture.
If I am looking at another picture from a "normal" amateur rig, they seem to have much less noise in their raw's.
Even if I am collecting up to 8 hours of data, it's quite terrible in comparison. What is the reason and can someone help me?

📷 Messier_33 (1).jpg

Is this an image from your telescope?

Does the Vaonis telescope cool the imager chip?

I looked into your image and I see no noise 🤔

Engaging

Devon Maddox Brunner

Topic starter

Dec 2, 2025

@Rainer Ehlert

Yes, the image is from my telescope. Bortle scale at about 5, no moon illumination.
The sensor is not cooled at all. This image only worked because of the bright Galaxy I imaged, normally with a nebula it looks a lot worse… ^^

Also NoiseXTerminator helped me a bit -_-

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D. Jung

Dec 2, 2025

I think the missing sensor cooling might be one reason for increased noise. Rule of thumb is that you double the dark current every 7C. Depending on your external environment this can lead to a difference in sensor temperature of 30C and more.

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