Foucault meter
To test telescope mirrors.
Gratings
Gratings, slits, pinholes to print on 24×36 slides for optical testing.
Refractor
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.
Interferometer
Bath laser interferometer.
Fourier Optic
Aperture obstruction evaluation through Fourier optic.
Spider designs
Open source and parametric designs for telescope spiders
Newtonian
Newtonian telescope built.