Gemini 7 Technical Debriefing, 1965

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best way to do it would be to fly over them with an airplane
and then change the scale to whatever you wanted it.
The photographs were important , but I don ' t think you have
to spend
valuable
fuel and time to get them.
An airplane
can do the same job getting photographs that we need for
Apollo landmarks.
That's right.
No questi on about that.
I found it difficult to move the map overlay.
It got better as the flight went on.
Yes, because we wore it in.
The overlay we have, with
periods, orbits , and the map underneath, I think that can
be improved. We needed a very simple device with two rollers
on the end, or some system a little bit more elaborate, but
a lot easier to handle.
I don't know, it worked all right toward the end, Jim.
If
you get it too elaborate, or too easy to roll , then it is
going to change on you.
It has to have a system where it can' t change.
It was valuable.
You knew where you were all the time.
We used it more than we used the star charts. Mainly, we ­
used the star charts for the no platform burns, for retro­
fire positi on, and for SEF and BEF positions.
By and large the maps and overlays were well prepared.
They
were available early to us. We knew how to use them and i t