How important is the right eyepiece?

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bcjolly
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Joined: Sat Jul 06, 2019 2:50 am

How important is the right eyepiece?

#1 Post by bcjolly » Sun Jul 21, 2019 12:36 am

I recently purchased an American Optical 110 microscope at what I consider a good deal. It arrived with cat#145 eyepiece. I noticed that the instrument originally was marketed with cat #180 eyepieces. Will I notice a difference between the two?
Barry

jfiresto
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Location: Northern Germany

Re: How important is the right eyepiece?

#2 Post by jfiresto » Sun Jul 21, 2019 7:00 am

Have you seen this page, with the words "eyepieces are quite forgiving", thats links to another with the title: "If it looks Good, it is Good"? I pass on the positive waves.
Last edited by jfiresto on Sun Jul 21, 2019 7:12 am, edited 1 time in total.
-John

Scarodactyl
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Re: How important is the right eyepiece?

#3 Post by Scarodactyl » Sun Jul 21, 2019 7:03 am

Probably not ideal. The 145s I think are stereo eyepieces, and ao stereos don't use color compensating eyepieces, while I think the 110 does? Apo will know for sure.

jfiresto
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Location: Northern Germany

Re: How important is the right eyepiece?

#4 Post by jfiresto » Sun Jul 21, 2019 7:29 am

bcjolly wrote:I recently purchased an American Optical 110 microscope ... with cat#145 eyepiece[s]....
Is the microscope parfocal?
-John

bcjolly
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Re: How important is the right eyepiece?

#5 Post by bcjolly » Sun Jul 21, 2019 12:15 pm

Yes! The microscope is parfocal.

apochronaut
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Re: How important is the right eyepiece?

#6 Post by apochronaut » Mon Jul 22, 2019 12:18 am

bcjolly wrote:I recently purchased an American Optical 110 microscope at what I consider a good deal. It arrived with cat#145 eyepiece. I noticed that the instrument originally was marketed with cat #180 eyepieces. Will I notice a difference between the two?
Barry
145 eyepieces will cause an annoying degree of lateral ca when used with the 34mm parfocal objectives. #180 eyepieces are needed. You could use 176 or 176A in a pinch but the f.o.v. is slightly smaller.

#181 or 191 have less compensation than 180s and are only to be used with the 45mm parfocal objectives.

bcjolly
Posts: 23
Joined: Sat Jul 06, 2019 2:50 am

Re: How important is the right eyepiece?

#7 Post by bcjolly » Mon Jul 22, 2019 12:42 am

Thank you, Sir! You are a wealth of information.
bcjolly

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