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Old December 25th 06, 05:28 PM posted to sci.astro.ccd-imaging
David Nakamoto
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Posts: 183
Default What are these white dots on a lunar photo?

Yup, people don't realize how dangerous human touch is to certain
materials. We're slightly acidic(?) so anything we touch is going to
get a dose of etching acid, and then the disintegration sets in.

So during the holidays, be careful of that handshake or your palm may
melt away, or that hug lest your clothing disintegrate, or heaven
forbid, kissing; God Knows what bugs are sitting there patiently on that
person's lips, just waiting for the next ride to hitch on to come by. (^_^)

--- Dave

Pat wrote:
Yep, sorry to have to agree. Great pictures but whoever handled this
material
needs a head modification - like a head removal??
If you want to be kind to him/her, buy a box of linen gloves for them.
Note that the skin oils of some people are able to etch most things - in
some cases, even stainless steel!

"reconair" wrote in message
...
They're finger prints on the negative.

Scott
wrote in message
oups.com...
http://www.lpi.usra.edu/resources/lu...info.shtml?223

Click on the picture. There's a lot of white dots which are clearly
some
sort of noise on the film. Does anybody know why these imperfections
appear?




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