The AGC (Apollo guidance computer) has been recreated in an FPGA
https://github.com/virtualagc/agc_simulation
The enthusiasm of these people is astonishing.
They powered up the +4V and +14V power supplies here after 50 years and they worked… Mind you, I recently powered up some stuff I did 35 years ago and it all worked too, and that used cheap commercial components while the NASA stuff was all milspec. It’s the capacitors you have to watch.
This is a great video about the computer which controlled the rocket. This was built by IBM. I read somewhere that all the design data for this has been lost
Just got this one
Eldon Hall was the totally mad boffin who designed the AGC hardware.
I am partly through a really fascinating book Sunburst and Luminary.
Don Eyles was the main programmer on the Lunar Module software.
Incredible to hear the engineer in the video talk about the analysing and debugging part with loads and loads of printed out sheets of numbers and using templates to look for unnatural number patterns which could take weeks, crazy from todays perspective
Emphasizes, what can be achieved if you are focused on solving a problem
Thank you for finding that.
This seems to be a longer version of above
You have to put up with the dumb guys presenting it 
The interesting thing is how much of the stuff has survived. I’ve read that all the software for the Saturn guidance (the system built by IBM) was lost – unlike the SM and LM computers for which they have working hardware, all the sources, and anyway could retrieve the binaries from the core modules.
Also interesting in terms of comparison to todays computers
This amazing video covers the Apollo Guidance Computer architecture. It’s a fast presentation and not boring
I don’t think so. Saturn has an internal heat source, but is not emiting visible light. For that it would need to be immensely hot; thousands of degC, to produce the right colour. Saturn is emitting long wavelength IR.
Not as obvious as we think: the frequency bands are completely different, enough to make vampires go out only by night
Also, Saturn radiates 2-3 times what it receives from the Sun, so what you see is not just sunlight?
