Optical Design Software:

ZEMAX, Code-V

Journals:

Applied Optics (OSA), Optical Engineering (SPIE)

Astronomy:

Astronomy Picture of the Day

German Astronomical Institutes European Southern Observatory (ESO)

Sky & Telescope - Sky Chart Sterne und Weltraum

Products:

Schott, Ohara, Corning

Newport Corp, Linos Photonics, Edmund Optics

Newport Richardson Grating Lab