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Blue trail in the sky

Help Needed
3 replies•157 views
Laurent Doldi avatar
Laurent Doldi avatar

Hi, what is this thin blue trail in the sky, above the Pyrenees (France), August 7th, 11:50 pm?

Focal length: 18 mm on APS-C. Cropped.📷 traineeBleue.jpgtraineeBleue.jpg

And the white trail below, is it a satellite or a shooting star?

Thank you.

Well written Respectful
Tony Gondola avatar
Tony Gondola avatar

No clue really, how long is the intergration?

Marco Montella avatar
Marco Montella avatar

I have seen them as well in my recent images. I thought it was just a chance occurrence, but I have not seen similar trails in the red and green channel masters. Perhaps trail rejection is somehow not fully efficient in the blue channel?

Well written Respectful Concise Engaging
Laurent Doldi avatar
Laurent Doldi avatar

Tony Gondola · Aug 11, 2026, 04:45 PM

No clue really, how long is the intergration?

50 seconds (27 mm, cropped)