Homebrew_PCBs

On Wed, 30 Jul 2014 19:50:22 -0700, you wrote:

>I didn't know that the eyepieces focus independently... Actually, mine (black metal/plastic?) don't seem to move or rotate at all. Maybe they're stuck? I don't want to simply reef on them (!), so perhaps you can tell me how they're supposed to move/adjust? I just use the main focusing rack at present.
>

There's a metal collar that the eyepieces fit into. Mine are press
fit eyepieces, and can just be pulled out. Rotating the collars
(coarse thread) allows each one to be independently adjusted.

Mine say 10xWF.

>
>Unfortunately, I DO have goofy eyeballs (astigmatism), although at present, as long as my head doesn't move out of position, I can still get a reasonably sharp magnified image with the rack adjuster.

As long as your astigmatism is not too bad, you should be ok.

>
>Might there be "wider field" eyepieces for this unit?

I suspect so, but I got what I got, and that was duplicate 10xWF on
each microscope

>
>And if there are, perhaps the eyepiece magnification could be reduced a bit. At present, the lowest of the two mag settings is usable, but a bit more intense than I might prefer. The high setting seems too be a bit too high.

Ah, well, when you start to look at the pins of a 144 pin IC, you'll
want to have high magnification.

Mine have 3 and 5 levels.

>
>My model is the "Forty Spencer,"  42-I or 42-L (?)

Not sure what mine is....

>
>Thanks!

n/p
Harvey

>
>--Kirk, NT0Z
>
>
>My book, "Stealth Amateur Radio," is now available from
>www.stealthamateur.com and on the Amazon Kindle (soon)