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PostPosted: Sun Jul 21, 2019 12:36 am 
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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


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PostPosted: Sun Jul 21, 2019 7:00 am 
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Joined: Fri Feb 15, 2019 8:19 am
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Location: Northern Germany
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.

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-John


Last edited by jfiresto on Sun Jul 21, 2019 7:12 am, edited 1 time in total.

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PostPosted: Sun Jul 21, 2019 7:03 am 
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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.


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PostPosted: Sun Jul 21, 2019 7:29 am 
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Location: Northern Germany
bcjolly wrote:
I recently purchased an American Optical 110 microscope ... with cat#145 eyepiece[s]....

Is the microscope parfocal?

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PostPosted: Sun Jul 21, 2019 12:15 pm 
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Yes! The microscope is parfocal.


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PostPosted: Mon Jul 22, 2019 12:18 am 
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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.


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PostPosted: Mon Jul 22, 2019 12:42 am 
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Thank you, Sir! You are a wealth of information.
bcjolly


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