We are the Round Hill Horizon Chasers from Round Hill, Virginia. We launched our balloon from a family farm in Princeton, KY (2:40 of totality).
Our team consists of myself (an aerospace software engineer) along with my three sons - college math major; high school junior planning on an aerospace engineering major; and my high school freshman.
Our launch went exceedingly well - the High Altitude Science inflation mechanism was definitely the way to go! Very simple to use and our 1000g Kaymont balloon securely fastened to the inflation nozzle with electrical tape. We used a standard styrofoam cooler for the payload enclosure and positioned 4 cameras around the sides. We also had an earth facing camera but it failed (fortunately the only camera failure).
The balloon reached an altitude of 30km, which was 2km higher than any burst calculation. This was great for photography, but bad for landing. With the extra altitude, we had extra drift, which meant our balloon landed somewhat deep in the Pennyrile Forest. Our radio (Byonics MT-1000) continued to transmit for 3+ days and gave very detailed position data. We had to abandon our first search on the 21st as it was getting dark and kids had to get back for school. On the 24th, family members were able to go in properly equipped and retrieved the payload undamaged (2 hrs in and 2 hrs back).
We're still going through our photos, but below is a sequence showing the eclipse shadow progression over Land Between the Lakes (KY). Altitude at the time of photos was between 25-27km. All in all, it was an incredible experience and we can't wait to launch our next balloon.