Preliminary Gemini 4 Crew Debriefing, Part II, 1965

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McDivitt
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McDivitt
White
McDivitt
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McDivitt
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COt'4FfDEt~TIAL {
Did it ever light?
First time I turned it on it lit and it went
"flit" , and then the light just went bzzz-bzzz.
I didn't know it ever lit.
It lit and then the light went out.
Okay.
So we lost the lightbulb in the angle
readout, which made all the rest of the measure­
ments very difficult. And the Air Force portion
in daylight was completely unusable.
You couldn't
see the stars and the horizon at any time.
In
the night portion,we initially had great large
angles between the stars and the horizon, and
we found that about 25 degrees was the maximum
star-horizon angle that we could handle.
Would
you concur with that, lli.?
Sure do.
As we mentioned when we were talking about the horizon
and the air glow.
We really had three horizons.
We had the true earth horizon.
We had the top
of the dim air glow layer, and we had the top
of the bright air glow layer.
I think that I
always used the top of the bright air glow layer,
except where I specifically called out in our