True or False?

Wolfgang Busch,
Who made the First Practical Oil-Immersion
Triplet Apochromat for Amateur Astronomy in 1974

Wolfgang Busch,
Who made the First Practical Oil-Immersion
Triplet Apochromat for Amateur Astronomy in 1974

HI Richard:

I believe "oil immersion objectives" are a feature of microscopes, not
telescopes, right?

Peace,
Rod Mollise
Author of _Choosing and Using a Schmidt Cassegrain Telescope_
Like SCTs and MCTs?
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Oil immersion is for microscopists and Ashcroft.
(He's an oil-annointer who speaks in tongues.)

Unfortunately, I think the term "oil spaced" misleads the uninformed to
think that there are oil tanks between the elements. Maybe some lenses
have been made that way, with what are effectively oil elements, but I
think all of Roland's just have a very thin capillary space filled with
oil between matching glass surfaces. Is that right?

Seasons greetings to all, and thank god that activist liberal
judges haven't prevented me from wishing you all a Merry Christmas!
Howie

believe "oil immersion objectives" are a feature of microscopes, not
telescopes, right?

Yes. There is a technique in microscopy where oil (don't remember which one)
is placed between the objective or nose piece and the specimen being examined.
I believe it increases the contrast of the object.

HAVRILIAK wrote:
believe "oil immersion objectives" are a feature of microscopes, not
telescopes, right?


Yes. There is a technique in microscopy where oil (don't remember which one)
is placed between the objective or nose piece and the specimen being examined.
I believe it increases the contrast of the object.
More about immersion that you might want to know;-)

http://micro.magnet.fsu.edu/primer/a...immersion.html

It's a language thing. I got it from a telescope faq written by
someone for whom English is a second language.

Rod Mollise wrote:

More about immersion that you might want to know;-)

http://micro.magnet.fsu.edu/primer/a...immersion.html

Hi:

This is one of the reasons I love this newsgroup. I just spent at least an hour
reading about and cruising web pages related to microscopy. Will the knowledge
ever come in handy for me? Well, ya never know, and I at least had a great
time. Thanks. ;-)

I did the same. It got me interested in getting out the old microscope
for a look at the invisible world all around us but I guess I'll have to
wait for spring when the micro critters get going again. Until then,
there's always dust mites. :-)