Originally posted by Murcielago
Those cameras they had (in today terms) sucked, So thats why you dont see the stars there to tiny to even make a a single pixel, hence the reason it
looks starless.
Well, actually, no. The cameras used on the Apollo flights were specially made
Hasselblads.
There are quite a lot of photographers out there that will tell you that even though the camera, and lenses and film designs are 35 years old, they
are probably superior to 98% of the commercially available equipment currently on the market. The most advanced digital equipment out there today has
only approached this level of quality in the past few years or so.
BTW, these were film cameras, so your use of the term “pixel” is incorrect.
The reason that stars do not show up on the photographs has to do with the dynamic range of the film emulsion.
Originally posted by genesiss
in notice in every debate where someone swears we went there they avoid the question of heat on the surface (to hot to film anything) or the no stars
issue or the pictures taken and yes they are very funny with the sites on the one shot being behind an object and one more time why is buzz so mad at
nasa and most astronauts are not pillars and hero's of society upon their return? why does everyone that says we went to the moon avoid questions
like the film\heat, no stars, van allen belt, and photoshoped pics, even now on mars we are discovering nasa is photoshoping pics cutting and pasting
skies and removing them
genesiss, is English your second language?
If you read the above Hasselblad link, you will see that the camera and film magazines were silver coated to minimize the amount of thermal variation
from the incoming solar radiation.
Are you familiar with vacuum bottles (or Thermoses)? Do you know how they keep coffee hot or ice tea cold for so long? There are two main mechanism
at work there. One is that the inner flask is surrounded by a vacuum. This eliminates the effect of air in the transfer of heat via convection. The
other is that the inside of the bottle is silver. This reduces the loss of heat through radiation.
Since, as I am sure you are already aware of, there is no air on the moon, the transfer of heat to the camera film via convection is not an issue.
The reflective exterior coating takes care of the thermal radiation issue. That leaves conduction as the primary source of heat. Since the cameras
were obviously carefully handled and stored throughout the mission, it would have been relatively easy to avoid putting the camera down on top of a
hot surface.
Oh, and perhaps you can explain just how NASA “photoshopped” the moon pictures in 1969?