Re: acetate (rather acetone)


Aug 9, 2004

 


----------------------------

#23968 Aug 9, 2004

In a message dated 8/9/2004 3:35:26 PM Central Daylight Time,

tim71pos@... writes:



> Are there any optical surfaces on which acetate CANNOT (as in SHOULD

> not) be used:

>

> --primary and secondary mirror coatings

> --corrector plate coatings

> --dielectric diagonal coatings

> --multicoated eyepieces

> --apo primaries

>



Acetone? This would be safe for all the above.



Roland Christen





[Non-text portions of this message have been removed]



----------------------------

#23971 Aug 9, 2004

Whoops, yes, I meant acetone.



Whew!!



I was sitting here trying to think of a use for acetate. I couldn't think of

anything that would make a difference with the optics you discussed, and

wondered if it was an AP group secret. I was starting to wonder if I'd just

stumbled into another area of my ignorance!



Clear Skies



Chuck Taylor



----------------------------

#23975 Aug 9, 2004

Well, I try to get the computer to understand this too. Please try

to read what I MEAN, not what I WRITE....



Actually isn't acetate the old film medium? Back in the days when

theaters used to go poof into flames if the projector paused?



regards

greg n



--- In ap-ug@yahoogroups.com, "Chuck Taylor" chucktaylor@s...>

wrote: > > Whoops, yes, I meant acetone.

>

> Whew!!

>

> I was sitting here trying to think of a use for acetate. I

couldn't think of > anything that would make a difference with the optics you

discussed, and > wondered if it was an AP group secret. I was starting to wonder if

I'd just > stumbled into another area of my ignorance!

>

> Clear Skies

>

> Chuck Taylor



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