Astronaut Scientific Debriefings, 1962-1963

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81
Schirra - That's our liability with the window being on an external
surface,
You are that close to the top of the well, so you get
incident light all over the place.
O' Keefe -
We don't want to create artificial problems here.
That
smoke scum on the window would not re ally disturb a s~el la spectrum be­
cause the absorption would be broad hand and would not be confused
with the stellar lines.
Dunkelman - That's right.
Tennyson - I was thinking about the IQSY photographs .
Schirra - Yes, yes.
Tennyson -
We are going with the problem of, oh, the ultr a vi ole t
and what is going to fog our nimbus pictures so to spe ak thro ugh these
photographs, well, the same still unknown film on this thin (capsule
window) being reflected in sunlight at an unknown altitude through
this window ... when you get through, what I'm saying is it would
be very hard for us to tell from these weather bureau pictures, etc.
(inaudible)
Nordberg - Well, of course, but it's really more an intensity
problem-just brightness rather .than spectral-I think spectral i s no t
too much of a problem , but the fact that it just dims things under
certain angles makes me ... things that much clearer.
But th is
experiment you suggested there is a real excellent one (referring
to Dunkelman's.
Schirra -
Oh yeah.
Dunkelman - Well, I mean it modifies it even more, makes it better
because you can do the same thing outside at night in clear air ­