The double flash at
1:22 in the 11" main telescope video and at
8:49 in the 80mm refractor video (t+
1:10 roughly) are a true mystery to me. They were captured in two independent cameras, a Blackmagic Pocket Cinema 4K with a 0.63 focal reducer and a Canon 90D respectively, with two different telescopes that were not perfectly co-aligned, yet the flashes appear in the same place relative to the rocket. This discounts the possibility of a lens flare, hot pixel, or other individual camera artifact. I spotted one of the weather balloons being launched from the Cape, but I was north of that balloon and south of the rocket. I also know from experience that my telescope will easily resolve weather balloons at this kind of range. NASA's WB-57 was also positioned south of me from what I've seen on flight tracking sites.