Description

Submission statement:
They are cheap (about a few bucks) check any website and look for diffraction gratings like "1000lines/mm linear diffraction grating".

You just put it before your camera objectif (with strap) and it could allow to capture a signature light spectrum with identifiable element if the observed "drone" is enough luminous.

It’s really worth to try and could help to identify them.

You could read more here for more information, this website provides file for 3D printing:

https://www.jp-petit.org/bonnettereseau.htm

You just put it before your camera objectif (with strap) and it could allow to capture a signature light spectrum with identifiable element if the observed "drone" is enough luminous.

It’s really worth to try and could help to identify them.

You could read more here for more information, this website provides file for 3D printing:

https://www.jp-petit.org/bonnettereseau.htm