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.

Fourier Optic

Aperture obstruction evaluation through Fourier optic.

Spider designs

Open source and parametric designs for telescope spiders


Newtonian telescope built.