Sometimes in night photographies, we get some odd colors that are not natural but due to defects in the lens we use. These happen more with a wide aperture which is what we would use in night photos. A small trick is possible to fix this.
Year: 2022
It is time to start looking at the processing of night photos. I’m going to start with the end of the workflow, as it’s simpler to explain.
I made a small Python script and a full app that will contain all the different tools that will be discussed in this series.
I’m happy to announce the new release of UniversalSyncDelay based on the Audio Toolkit and JUCE. It is available on Windows (VST3) and macOS (min. 10.11, x86_64 and ARM64) in different formats.
UniversalSyncDelay is a Patreon-only plugin, although the source is freely available. It is similar to the UniversalDelay plugin, but with a delay synchronized to the tempo.
In the previous entry, I just stacked 58 photos without any additional thoughts to get a nice simple photo. It is time now to go one step further. What are the steps required to stack astrophotos together?
I’m a white, cis and athletic male, the archetype of a privileged person. Sometimes we thing that it’s being woke to try to figure out when we do have them. I reviewed a book about race, read others about gender, but I didn’t think about my build. Well, I was wrong.
It’s been a while since my last update, and here is ATKUniversalDelay rewritten using JUCE and with support for AUv3 and the M1 architecture.
It’s currently available on Github.
Our immune system has been quite a central topic the last couple of years. When Philippp Dittmer wrote his take on the subject, I was interested, as Kurzgesagt is one of the best science Youtube channel there is!
Well, not too much background noise at least!
I love photos, and I’m beginning to get into astrophotos as well. One issue I face is how to get long exposures from the sky when you have light noise. I want to see arcs in the sky, but the longer you expose, the brighter the background becomes. The same problem occurs if you are using a polar tracker, you get more light, but also more noise!
So I decided to get a small script together to generate images like this one:
It feels a little bit artificial because the noise is minimal and because there are not that many small stars, but it’s a good start. The script is very easy, it just reads all images from the command line pattern, and then gets the maximum pixel value for all pixels across these images. Saving in “result.jpg”, and this is it!
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| # -*- coding: utf-8 -*- | |
| import glob | |
| import sys | |
| import numpy as np | |
| from PIL import Image | |
| def readFiles(images): | |
| loaded = [np.asarray(Image.open(img)) for img in images] | |
| return np.array(loaded) | |
| if __name__ == "__main__": | |
| r = np.max(readFiles(glob.glob(sys.argv[1])), axis=0) | |
| Image.fromarray(r).save("result.jpg") |
The script doesn’t try to align images at all, as we want to see the arcs (at least I want to!), so to use this script, you need to capture many images on a tripod and a remote control.
Anyway, easy, there may be other small scripts like this in the future, who knows.
I’m happy to announce the new release of Andromeda based on the Audio Toolkit and JUCE. It is available on Windows (VST3) and macOS (min. 10.11, x86_64 and ARM64) in different formats.
Andromeda is a Patreon-only plugin, although the source is freely available. It is based around the Andromeda variation of the Noble ODR-1 pedal.
After the Windows update, I finally updated the MacOS versions of my preamplifiers. To register the Audio Unit v3, you just need to launch the app, which was the step I was missing.
Currently only the Windows version (VST3 32bits and 64bits) has been updated and is available on GitHub here for the bass preamp and here for the guitar preamp.
