300 miles away from
their perch in near space.
This BalloonSat has flown into
near space before. It holds two
Mobius ActionCams (one unmodified
for recording RGB and the other
BalloonSat points its
camera payload towards
the ground and also
takes images every five
seconds. Since the
eclipse path goes
directly below the
BalloonSat, I expect its
cameras to detect
differences in the ground’s
appearance before, during, and after
This payload will be part of a
radio tracker and BalloonCam, rather
than a separate BalloonSat. Although
in the future, I plan to construct a
more capable radiation monitoring
BalloonSat. The measurement of
cosmic rays will be made with an
Aware Electronics’ RM- 60 Geiger
counter and a Bubble Tech neutron
The RM- 60 can measure all types
of radiation because of the alpha
window in its Geiger-Müller tube.
The bubble detector only records the
absorption of neutrons.
I won’t know at what time or
altitude each neutron detection will
take place, so the bubble detector is
just acting as a dosimeter.
However, I’ll keep a second
neutron bubble detector on the
12 October 2017
Looking like a pair of eyes, this near space
spy will monitor the horizon for evidence of
the moon’s shadow.
Two ways background radiation (and therefore cosmic
rays) will be detected during the eclipse.
The UV beads appear
white when they’re
not exposed to
(the nearly full moon
is above the NearSys
logo). I took this
picture shortly after
sunset so the largest
source of ultraviolet
wouldn’t affect them.
Still, there’s just
scattered by the
sunset to affect their
An old trooper, this BalloonSat has flown
several times before. It carries three cameras
for recording the ground below.
The UVSat does double-duty. It’s flying my logo into near
space as a promotion while recording ultraviolet intensity
using a photodiode sensor and plastic beads.