• BibTex

    author = {Yapo, Theodore and Cutler, Barbara},
    title = {Rendering lunar eclipses},
    booktitle = {Proceedings of Graphics Interface 2009},
    series = {GI 2009},
    year = {2009},
    issn = {0713-5424},
    isbn = {978-1-56881-470-4},
    location = {Kelowna, British Columbia, Canada},
    pages = {63--69},
    numpages = {7},
    publisher = {Canadian Human-Computer Communications Society},
    address = {Toronto, Ontario, Canada},


Johannes Kepler first attributed the visibility of lunar eclipses to refraction in the Earth's atmosphere in his Astronomiae Pars Optica in 1604. We describe a method for rendering images of lunar eclipses including color contributions due to refraction, dispersion, and scattering in the Earth's atmosphere. We present an efficient model of refraction and scattering in the atmosphere, including contributions of suspended volcanic dusts which contribute to the observed variation in eclipse brightness and color. We propose a method for simulating camera exposure to allow direct comparison between rendered images and digital photographs. Images rendered with our technique are compared to photographs of the total lunar eclipse of February 21, 2008.