AI noise reduction to bring a new live of the old data

  • Posted on: 9 December 2022
  • By: tihomiry

As may times I said it is essential to keep all your shots over the years, as you can go back and reprocess them.
Make new discoveries or improve the resulting image quality.
I recently learn about Topaz DeNoise and get it on the black Friday :) It is artificial intelligence driven software for noise reduction.
It is not designed for Astrophotography but give good results by suppressing the noise and keep the details.
Even more, it reveals some extra details, hidden into the shadows of the noise.
I had a lot of data that I shot with crazy high ISO.
So here are some process examples of stacked data, processed without applying conventional NR. I kept this as last step with Topaz DeNoise.

M101

Helix Nebula

M106

HourseHead Nebula

To check the polar alignment of your telescope look trough the polar scope. When turning the Ra axis the polar star should move in the exact circle in the eyepiece without any deviation.

Removing the DSLR build in IR-cut filter will give you at least 50% more sensitivity for hydrogen alpha emissions of the nebulas. Also the camera will be more light sensitive at dark allowing you to shoot more faint objects.

We can check what is like to process day shot with similar to astrophotography techniques. It is cloudy in Bulgaria for the next week or so and I took shots of the nearby mountain trough the fog with 200mm lens.

Most of the modern LED backlight screens including Laptops, TV and smart phones use PAM technique for Pulse-amplitude modulation. This means that they switch on and off state very rapidly.

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