Gemini 9 Debriefing, 1966

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6.

Koomen- (on some pictures) the airglow is sometimes sharper than other times. There are 45 good pictures; the thruster frame is black.

Ciernan- Does the bright moon help the airglow?

Koomen- We don't think the moon affects the airglow at all.. - There is evidence of differences in intensity and altitude using (comparing) the two filters.

Stafford- Dr. Ney's experiment (is) learning curve for S-11.

- lightning flashes

Koomen- Last 4 pictures/ 2 extra sets of exposures, 5 and 10 secs. with filters

Stafford- Decision not to go We had 6 (numbers) of frame(panel?) left

Ciernan- Just 2 dots were what you need, not 3 (on camera or panel or what?

Koomen- Could you adjust brightness of points?

Ciernan- Not as fine as I'd like-- I'd like to go dimmer..

Koomen- Did you use ring on shaft?

Ciernan- Yes. with my fingernail...

Koomen- Were you pressed for time?

Ciernan- As a matter of fact we had time to wait for sunrise.. - It was slower because we were saving fuel.

Stafford- Boresight would reduce time by 25%.

Koomen- Was the estimate to take the twilight pictures ok?

Ciernan- We took what you gave, and apparently they were..

Koomen- Would it be better just to use your own judgment?

Ciernan- No, I was glad to have the times..

- We were glad to have the time so we knew what to shoot at..

Koomen- Did you see and color in the twilight airglow

Ciernan- No, just grey or NO COLOR. - I would use milky to describe the appearance..

(Koomen showed slides of many of his pictures which were very good.)

Koomen- Na filter and minus Na filter show somewhat different levels

Lintott- What about boresighting?

Ciernan- Yes, it could bring yaw on