Like most of the Rochester physics and astronomy faculty, Dan Watson teaches a wide variety of courses, from large non-science-major classes to tiny advanced graduate tutorials. Also like most of his colleagues, he develops and continuously redevelops a lot of electronic media for his courses. He strongly prefers to leave these materials publically accessible, though he often password-protects homework and exam solutions. If you are an instructor of similar classes and want access to the protected sections, just ask Dan.

Here are links to the most recent versions of his more-presentable course websites.

Animation by Robert Hurt (SSC)

Current or most recent
  Astronomy 142: elementary astrophysics. A sophomore honors course on the physics of stars, interstellar matter, galaxies, and the large-scale structure of the Universe. Normally includes nighttime observations with the 24-inch telescope at UR's Mees Observatory. Taught by Dan in 1990, 1992, 1994, 1998, 2001, 2002, 2007, 2009, 2011, 2013 and 2022; also frequently taught by Alice Quillen and Kelly Douglass, and occasionally by Segev BenZvi.
 
Astronomy 102: black holes, time warps, and the large-scale structure of the Universe. A course on relativity and relativistic astrophysics presented minimally-mathematically, and aimed at non-science majors. All homework and exams are administered on line, using the WeBWorK system. Taught by Dan in 1994, 1996, 1998, 2000, 2001, 2004, 2006, 2008 and 2009; frequently taught by Kelly Douglass and Frank Wolfs.
Astronomy 106: the cosmic origins of life. An account of the evolution of the Universe, the Galaxy, the Solar system, and life and civilization on Earth. Aimed primarily at non-science majors. All homework and exams are administered on line, using the WeBWorK system. Taught by Dan in 2010, 2012, 2015, and 2021; frequently taught by Kelly Douglass .
  Astronomy 111: the Solar system and its origins. Suitable for freshmen but taught at the honors level, this course is an introduction to planetary surfaces, interiors and atmospheres, celestial mechanics and planetary rings, asteroids and comets, protoplanetary disks and planet formation, and exoplanets. Normally includes nighttime observations with the 24-inch telescope at UR's Mees Observatory. Taught by Dan in 2000, 2005, 2007, 2008 and 2011; also frequently taught by Alice Quillen and Kelly Douglass.
  Astronomy 142: introductory astrophysics. A sophomore honors course on the physics of stars, interstellar matter, galaxies, and the large-scale structure of the Universe. Normally includes nighttime observations with the 24-inch telescope at UR's Mees Observatory. Taught by Dan in 1990, 1992, 1994, 1998, 2001, 2002, 2007, 2009, 2011 and 2013; also frequently taught by Alice Quillen and Kelly Douglass, and occasionally by Segev BenZvi.
  Astronomy 203/403: astronomical instruments and techniques. Intended for senior undergraduates and beginning graduate students, this was an advanced class in geometrical and physical optics, interferometry, detectors, noise and the theory of light detection, all applied to astronomical imaging and spectroscopy. Taught by Dan in 1989, 1991, 1993, 1995, 1997 and 1999. It was popular at first, but as opportunities for research in astronomical detectors and instrumentation dwindled in the late 1990s, the course lost its audience, and is on the books only as a reading course now.
  Astronomy 241: stellar astrophysics. A course for junior and senior physics and astronomy majors in stellar atmospheres, interiors and evolution, including an introduction to circumstellar accretion disks. Operates more like a tutorial or workshop than a lecture- and textbook-based course, as most of the work involves a great deal of mathematical exposition and numerical simulation. Dan taught this course in 1995, 1997 and 2005; it is most frequently taught by Eric Blackman.
  Astronomy 244/444: advanced astrophysics laboratory. This is the astronomy-only version of our Advanced Laboratory, in which challenging observing projects and analyses are carried out using the 24-inch Cassegrain telescope, and its research-grade instrument suite, at Mees Observatory. Taught for the first time, by Dan, in Spring 2020.
  Physics 122: electricity and magnetism for science and engineering majors. Accent on the engineering, in this case. Dan taught this class in 2012 and 2019. Quite a few of Dan's non-astro faculty colleagues teach it with high frequency, as we offer two independent sections of the course each Fall, one in lecture/recitation format and one in mastery/self-paced format.
  Physics 217: electricity and magnetism I. The first semester of our junior-level E&M course for physics and astronomy majors, mostly covering electrostatics and magnetostatics. Taught by Dan in 1990 and 2002; this course is frequently taught by Steve Teitel, Pierre Gourdain, and Lynne Orr.
  Physics 218: electricity and magnetism II. The second semester of our junior-level E&M course for physics and astronomy majors, covering light, the interaction of light with matter, and the physics of radiating charges, currents and fields. Taught by Dan in 1991 and 2004, it is most often taught these days by Pierre Gourdain, Steve Teitel, and Lynne Orr.