duendy said:
'The Moon is affected by extreme teperatures, exacerbated by lack of atmosphere'...if so, how come their 'Hasselblad 500' camera worked without destroying the film emulsion'
The moon does indeed experience extreme temperatures -
but over a twenty eight day period. The timing of the moon landings was partly arranged to avoid the very highest lunar temperatures. My recollection is that the camera was contained within a protective casing, which would have provided additional insulation. Operating temperatures would have remained satisfactory throughout.
I am certain you could find something on this - published before the landings - if you look hard enough. NASA poured out masses of information on just about every aspect of the flights.
The trite answer, of course, is that for what a Hasselblad costs I would expect the damn thing to work on the surface of the sun, not just the moon!
duendy said:
Xrays from Sun would fog film and ultraviolet rays would distort colours'...yet offical Landing pics are perfect---explain?
Solar x-ray emissions are significant during flares. These constitute a major danger to astronauts: had one occured at any point in the mission, it would have been aborted. Under normal conditions, however, the flux levels of x-rays are insufficient to cause any problems. There are considerably fewer x-rays to fog the film in space, than in an airport x-ray machine. You can run film through those dozrns of time without visibly effecting it.
duendy said:
'Gravity on moon is one sixth that of Earth. An astronaut would weigh about 30 kilos on the moon, yet the depth of the astronauts' footprints in the sand of the Moon suggest they weighed much more..'
Two points. One has already been mentioned. They were in massive suits. Point two: it isn't sand, its very fine dust, very loosely settled on the surface. Not at all compact. Very easy to leave footprints in.
'None of photos taken on the moon showed evidence of flash. You wold have seen a flash...because the astronaut taking the phograph would have been reflected in the visor of the other astronaut'
Do
you use flash to take photographs outdoors, in the middle of the day? If you do, I can recommend some good books on photography.
Next.