Re: Total solar eclipse to be seen across the U.S.
Posted: Sat May 13, 2017 9:15 pm
Something to consider on Eclipse Day...
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Interesting experience related to us, thanks for sharing Wade.Wade Hampton III wrote: Can you see city lights from the Moon?
Fred Bruan, Linux Software Developer (1996-present) posted...
People always ask me (Mitchell) what its like on the moon.
We’re too damned busy and scared to make a mistake to really
notice much. Our time is very scripted, that’s a good thing.
As lunar module pilot I had a helluva lot to do to get the
LEM ready for the descent to Fra Mauro and return. After
we left lunar orbit, I didn’t have anything to do but
look out the spacecraft window.
It was make work really, and a bad idea. So, we blast off the
Moon at the optimum phase angle, and boost for about 7 minutes.
We wait until the phase angle closes to our CSI, concentric
sequence initiation. That puts us into an elliptical orbit. We
are climbing toward the CM as we close phase angle. We wait
another 55 minutes and do the CDH burn, the constant delta
height burn. That puts us right under the CM, behind them.
Then another 28 minutes and we do TPI, terminal phase initiation.
Another 36 minutes and we have intercept. We rendezvous and dock,
and haul all our stuff out of the lunar module. Stow the cases
on board the command module.
A couple hours after lift off we jettison the ascent stage.
Three hours after that, after a few system checks, we do a trans-
Earth burn on the lunar far side. As we come around the far side,
the Earth rises, and I’m at my sextant shooting stars as they rise
above the Earth and set behind the Moon. Centering the sextant on
the star and pressing a button when it passes below the horizon,
gives the computer everything it needs to know to figure out where
we are. That checks the inertial system, and the radar system.
The CM is in ‘barbecue mode’ rotating to even out the temperature
differences. From my vantage point at the sextant, I can see a 360
degree panorama, moon, sun, Earth, over and over again. *
No problem at all! Here is something new about the Eclipse fromJim Mathias wrote: Interesting experience related to us, thanks for sharing Wade.