Donald H. Gudehus

• B.S. Physics, Massachusetts Institute of Technology, 1961
• A.M.. Physics, Columbia University, 1963
• M.A. Astronomy, University of California, Los Angeles, 1967
• Ph.D. Astronomy, University of California, Los Angeles, 1971

• Research Assistant, Columbia University, 1961-1963
• Engineer/Scientist, McDonnell Douglas Aerophysics Lab , 1964-1967
• Postdoctoral Scholar, UCLA, 1971-1975
• Assistant Professor, Los Angeles City College, 1974-1981
• Assistant Research Scientist, University of Michigan, 1981-1989
• Visiting Faculty Member, Oklahoma State University, 1989-1992
• Visiting Faculty Member, Georgia State University, 1993-1994
• Project Scientist, 3D Image Technology, Inc., 1995-1999
• Adjunct Associate Professor, Georgia State University, 1998- (mostly retired)

Interests: Observational cosmology, extragalactic and galactic astronomy, binary stars, instrumentation, image processing

Career Accomplishments

• First application of two-dimensional flat-fielding to a photoelectronic imaging device, 1970
• First evidence for merging of galaxies within clusters of galaxies, 1973
• First evidence for large-scale motions of clusters of galaxies, also known as cosmic flows, 1973, 1978
• Disproved the idea that first-ranked cluster galaxies have constant surface brightness, 1975
• The Cosmological Correspondence Principle, 1985
• Discovered a method of CCD operation known as Partial Inverted Operation, 1985
• Pioneered a method of accurate surface photometry of cluster galaxies whereby overlapping images of contaminating galaxies are iteratively modeled and subtracted, 1989
• Discovered a new systematic bias present in cluster galaxy data which affects relative distance estimates and evolutionary history; showed that the "fundamental plane" is really two intersecting planes; revised the "Faber-Jackson" relation, 1991
• Wrote and made available on the internet several astronomy software packages, including a widely used combined solution binary star program, 1992 - present

Selected Recent Publications

• Two-Band CCD Surface Photometry of Cluster Abell 1689,
  The Astronomical Journal, 1991
• Systematic Bias in Cluster Galaxy Data Affecting Galaxy Distances and Evolutionary History,
  The Astrophysical Journal, 1991
• The Mass and Helium Abundance of Mu Cas from Speckle Interferometric Observations,
  The Astrophysical Journal, 1992
• A Communications Interface for SAOimage,
  Publications of the Astronomical Society of the Pacific, Feb., 1995, 105 kB
• The Virgocentric Velocity From Bright Cluster Galaxies,
  Astronomy and Astrophysics, Oct., 1995
• Large-scale Motions in the Universe: Observations and Simulations,
  Cosmic Flows Workshop, Victoria, BC, July, 1999, eds. S. Courteau, M. Strauss, and G. Willick, 1.33 MB
• A Multiple-Star Combined Solution Program - Application to the Population II Binary Mu Cas,
  American Astronomical Society Meeting, Pasadena, CA, June, 2001, 1.03 MB

Full List of Scientific and Other Publications

Learn about The MIIPS Software Package, a suite of astronomical and general purpose data reduction, analysis, and display software. All source code is freely available, and the entire package as well as some specialized components can be downloaded from this site.

Special Independent MIIPS Component Packages that are available:

Learn about "Enhanced" SAOimage and the Communications Package, a pseudocolor display server for X Window which can be controlled by an easily written user program, or go directly to the download page for "Enhanced" SAOimage and the Communications Package.

Learn about the Binary Star Combined Solution Package, a program that can solve for the parameters of a binary star system from combined astrometric, speckle, and spectroscopic data, or go directly to the download page for the Binary Star Combined Solution Package.

Learn about the FITS Library Package, a set of routines to handle operations with FITS image files, or go directly to the download page for the FITS Library Package.

Learn about the Grades Package, a program that can manage student scores, or go directly to the download page for the Grades Package.

Learn about the MIIPS Plot Package, a package consisting of a library of subroutines and user programs, capable of producing high quality plots suitable for publication, or go directly to the download page for the Plot Package.

Some courses I have taught:

Astronomy 1010 - The Solar System

Astronomy 1020 - Stars and the Universe

See a slide show of some of my research

Learn about 3D and animation hardcopy and making 3D photos. 3D Fun

See a list of and listen to my musical compositions

Try out my Melody Search Engine (beta)

See my macrophotography of butterflies and moths

See some quotations that I have collected

See a web cam view out my window in Oregon

Visit the parfaitimage.com web site for links to some of the above, and other imaging information

My Personal Life

Search the World Wide Web with the Google search engine. Google sorts the matches according to their significance (or PageRank) as determined by back-links to the referencing pages. Read the scientific paper on the PageRank, method written by Larry (Lawrence) Page and Sergey Brin, the founders of Google.

Search WWW Search www.astro.gsu.edu