Optics and astronomy

Foucault meter

To test telescope mirrors.


Gratings, slits, pinholes to print on 24×36 slides for optical testing.


Home made refractor.

ISS pictures

ISS over sun or moon.

ISS tracking

Programming a GEM to track the ISS.

Astro blog

Blog posts on astronomy.

Spike removal

Removing diffraction spikes.

Radial noise

Removing Radial noise.


Bath laser interferometer.