  Using the EXOplanet Transit Interpretation Code (EXOTIC), we reduced 52 sets
of images of WASP-104 b, a Hot Jupiter-class exoplanet orbiting WASP-104, in
order to obtain an updated mid-transit time (ephemeris) and orbital period for
the planet. We performed this reduction on images taken with a 6-inch telescope
of the Center for Astrophysics | Harvard & Smithsonian MicroObservatory. Of the
reduced light curves, 13 were of sufficient accuracy to be used in updating the
ephemerides for WASP-104 b, meeting or exceeding the three-sigma standard for
determining a significant detection. Our final mid-transit value was
2457805.170208 +/- 0.000036 BJD_TBD and the final period value was 1.75540644
+/- 0.00000016 days. The true significance of our results is in their
derivation from image sets gathered over time by a small, ground-based
telescope as part of the Exoplanet Watch citizen science initiative, and their
competitive results to an ephemeris generated from data gathered by the TESS
telescope. We use these results to further show how such techniques can be
employed by amateur astronomers and citizen scientists to maximize the efficacy
of larger telescopes by reducing the use of expensive observation time. The
work done in the paper was accomplished as part of the first fully online
Course-Based Undergraduate Research Experience (CURE) for astronomy majors in
the only online Bachelor of Science program in Astronomical and Planetary
Sciences.
