Clear sky but no star trail

[4358haltern]

hello everyone.

I have very clear and good night pictures but no star trail. what setting could be causing this

[dg8yho]

the Image looks like the Keogram, not the Starttrails Image

[4358haltern]

that should only show that the sky is clear

[dg8yho]

Have you enabled the Startrailcreation?

From the manual:
Creating a startrails image
You specify whether or not you want a startrails image automatically created via the setting in the Startrails sub-section of the WebUI. When enabled, a startrails will be created at the end of night.

[dg8yho]

and also look at this settings:
The only configuration option for startrails in config.sh is BRIGHTNESS_THRESHOLD which defaults to 0.1. Any image with an average brightness greater than this will be skipped during startrails image generation, so almost all daytime images are skipped. You may need to play around with this to get the best results, as allsky cameras, lenses, and sky brightnesses vary from person to person.

https://htmlpreview.github.io/?https://raw.githubusercontent.com/AllskyTeam/allsky/master/html/documentation/explanations/startrails.html

[4358haltern]

merci

[EricClaeys]

@4358haltern, please let us know if you were able to fix this.

[4358haltern]

I changed the value to 0.45 but nothing

[EricClaeys]

Did you follow the steps on the Startrails documentation page that @dg8yho mentioned? As far as I know it has helped everyone else who was having problems.

[Nika250]

Very interesting.

[EricClaeys]

What is very interesting?