OpenStars project

Pedagogical star modeling using Web technology.

ishort "at"

To provide university and high school instructors and students with physics-based pedagogical web apps for demonstrating and investigating stellar astronomy and astrophysics, and exoplanetary systems, at a wide range of educational levels, that are accessible on any common computational device as is,
To provide astrophysics students with public domain open source stellar astrophysical modeling codes with which they can experiment, and to which they can contribute, using the developer console of any web browser on any device.

To popularize and normalize astronomy by deploying intuitive and engaging interactive credible simulations of astronomical objects and systems in a way that can be seamlessly integrated with web cluture, including web-based gaming, massive multi-player virtual worlds, and social media.

Collaboration and supervision opportunities in astrophysics, web development, and pedagogy. Projects range from Undergrad to M.Sc. level:


Any of these can be cited when referring to any OpenStars application

Short, C. Ian & Bayer, Jason, H.T., 2018, ChromaStarAtlas: Browser-based visualization of the ATLAS9 stellar structure and spectrum grid arXiv: 1805.03674
Short, C. Ian, Bayer, Jason, H.T. & Burns, Lindsey M., 2018, ChromaStarPy: A Stellar Atmosphere and Spectrum Modeling and Visualization Lab in Python, ApJ, 854, 82, 5 pp. arXiv: 1801.07208
Short, C. Ian, 2017, ChromaStarDB: SQL database-driven spectrum synthesis, and more, PASP, 129, 094504, 11 pp. arXiv:1707.07725
Short, C. Ian, 2016, GrayStarServer: Server-side spectrum synthesis with a browser-based client-side user interface, PASP, 128, 104503 (arXiv:1605.09368)
Short, C. Ian, 2015, grayStar3 - gray no more: More physical realism and a more intuitive interface - all still in a WWW browser (arXiv:1509.06775)
Short, C. Ian, 2014, GrayStar: A Web Application For Pedagogical Stellar Atmosphere and Spectral-Line Modelling and Visualization, JRASC 108, 230 (arXiv:1409.1891)
Short, C. Ian, 2014, GrayStar: A Web application for pedagogical stellar atmosphere and spectral line modelling and visualisation II: Methods, arXiv:1409.1893

Friends of OpenStars

Magnetar Games

Research-grade codes

Spectral analysis


Atmospheric modeling + spectrum synthesis


Spectrum synthesis


NLTE Spectral line