Podcaster: Rob Sparks. Guest: John Blakeslee

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Title: NOIRLab – Resolving A Discrepancy In The Hubble Constant

Organization: NOIRLab

Links: ; @NOAONorth; ; ; ; ; ; @NOIRLabAstro

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Modern astronomical cameras capture data in a format called a FITS (Flexible Image Transport System) file. FITS files cannot be opened by many common image processing programs. FITS Liberator 4 is a program that opens FITS files and saves them in a format the can be opened and manipulated by common image processing programs. In this podcast, Robert Hurt (IPAC) talks about FITS files, the history of FITS Liberator, how you can use FITS Liberator 4 to create your own images and some sources of astronomical data.

Bio: Rob Sparks is a science education specialist in the Education and Public Outreach (EPO) group at the National Optical Astronomy Observatory (NOAO) and works on the Galileoscope project (, providing design, dissemination and professional development. He blogs at

John Blakeslee is an Astronomer at NSF’s NOIRLab studying galaxies, galaxy clusters, and the expansion of the universe.  He completed his PhD at MIT, followed by a postdoctoral fellowship at the California Institute of Technology. Dr Blakeslee has worked as a Research Scientist with the Hubble Space Telescope’s Advanced Camera project at Johns Hopkins University, a faculty member at Washington State University, a Staff Astronomer with the Canadian National Research Council in Victoria, British Columbia, and the Chief Scientist of Gemini Observatory.  In addition to doing research, he now serves as the Head of Science Staff for Observatory Support at NOIRLab.

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365 Days of Astronomy

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