Astronaut Scientific Debriefings, 1962-1963

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4.
By noting the time when Phecda was halfway f rom the
luminous oand to the horizon.
5.
By noting the fact that when the cross of the reti cle
,th(.. 'A 1,( ·1 r.~ i) ~ /).\ \>.-.(
!
i s set diagonally,~ just covers the distance from the band to the hori zon.
By method 3, we make use of the time of passage through the middle
J
of the layer.
This point is marked by a reference to a mark on the telemeteri ng.
enl:y: ee found on ~he gr ottae. etatiea ta:r;,e s,
.:i. ~
'-"'' .;i.--,c.:h •" .,.;.~1
).."f' cn\:!r . L\ t r f e,, 4er
v a:'.. efl 1:,Pe Mt yet svail:a:til.e, ~
l,y careful timing of the capsule t ape'/\it
,,.
appear s to have been very close to a 4h "1,m j.9s, capsule elapsed time, i.e.,
16h5cPl/5s.
UT.
For this instant the capsule coordinates as i nterpolated from
the Woomera tracking data, were - longi tude - 127° 40:0
latitude = -18° 49:8
he i ght
= 226 kilometers
At thi s moment, the l i ne of sight to ( Ursae Majoris was t angent to
t he l ayer of maxi mum thi ckness of 5577.
The angular zeni th distance oft U Ma
at t hi s time was found to be 101°42 1 •
A line of this zeni th distance i s t angent
t o a spherical shell of the proper radius whi ch i s 137 ki lometers below the
capsule or 89 ki lometers above sea level.
Accordingly, thi s observat i on should
be i nterpreted a s i ndicating that the densest part of the 5577 l ayer i s at a
height of 89 ki lometers, which is in good agreement with rocket measures.
The lower limit of the visible light appeared to be near 78 ki lometers;
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faf~8}1/ _v}r/ ¢1/1•
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The f i lter observati on on the airglow was made at 17h 0~ 6s, UT.