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We report the work and findings of Arkansas BalloonSAT in participating in the 2017 Eclipse Ballooning Project. Arkansas BalloonSATwas the site-team forMissouri and launched a high altitude balloon from Fulton High School in Fulton, MO an hour prior to totality. The eclipse balloon flight (ABS-50) marked the 50th mission of Arkansas BalloonSAT and the culmination of nearly 10 years of scientific research and science outreach (e.g., Kennon, et al. [1]). The ABS-50 balloon reached an apogee of 24 kilometers shortly after floating for one minute in themoon’s umbra. In addition to live-streaming video fromone payload as part of the Eclipse Ballooning Project, our mission included carrying a scientific payload and educational outreach. This report will summarize those efforts and include an examination of balloon kinematics with the cooling effect of the moon’s umbra and aircraft-balloon interaction. We further discuss developments in the system to minimize payload size for future eclipse studies. Upon recovery, we note a considerable difference between actual and projected balloon paths that mark the influence of the Moon’s shadow on Earth’s atmosphere.

Observing the 2017 Total Solar Eclipse in the skies above Central Missouri, USA