[Histonet] microscope ocular questions

[Lee & Peggy Wenk]

Tim, etal:

This is easily understood:  focusing and setup work the same on binoculars,
one eyepiece is focused with the main focusing system, the other is used to 
match
focusing with both eyes.  First focus the scope (binoculars or microscope) 
thru
the simple (non focusing) eyepiece, then use the focusing eyepiece to fine 
tune
focus for the other eye.  Once you've determined the setting on the focusing
eyepiece, you can return the scope to this setting with ease and you should
be able to use the scope for hours at a time without fatigue.

Each microscope or binoculars is different.  The setting for each person 
will
be different (everybody's eyes are different).  Each of our eyes are 
different,
thus the need for independent focusing for one eye.

Try defocusing the focusing eyepiece and using scope for a period.
Your eyes will have to work overtime to keep the image in focus (if
you are young you might last longer than I would at 65) and you could
get a headache or suffer fatigue.

Lee Wenk  (Peggy's husband)


-----Original Message----- 
From: Morken, Timothy
Sent: Tuesday, July 10, 2012 1:39 PM
To: Histonet
Subject: [Histonet] microscope ocular questions

Histonet gurus,

Why is each microscope ocular marked and operated differently? For instance 
the right one has a knurled focusing ring,  is easily focused and has 
detailed graduations while the left one is not really set up to focus 
quickly and has only minimal graduations? Always wondered about this but 
can't find anything about it!

Thanks for your insights!

Tim Morken
Supervisor, Electron Microscopy/Neuromuscular Special Studies
Department of Pathology
UC San Francisco Medical Center
505 Parnassus Ave, Box 1656
Room S570
San Francisco, CA 94143

(415) 353-1266 (ph)
(415) 514-3403 (fax)
tim.morken <@t> ucsfmedctr.org


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