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azonenberg>
Sync__: I'm picking up optics slowly
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azonenberg>
just grabbed a newport 2-axis mirror mount and repurposed it as a tilt stage for my microscope
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Sync__>
yeah I bought two nanostages azonenberg
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azonenberg>
I have two i think 250um/revolution linear stages
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azonenberg>
Might try hooking those up and remove the olympus stage
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azonenberg>
they're a lot more precise
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azonenberg>
just have to machine some base plates or something
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nats`>
grab one from ebay ;)
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nats`>
mine works weel now
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Sync__>
I achieved 100nm positioning with those, they are .5mm/rev but with a 1024count encoder
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Sync__>
so that is not too bad
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azonenberg>
Sync__: Not bad
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azonenberg>
Mine lack encoders atm
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azonenberg>
I have yet to decide how to mount things on them
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Sync__>
I more or less have the issue how I bolt them together and insure planarity
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azonenberg>
to use as a tilt stage
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nats`>
azonenberg I didn't do the tilt stage for now :)
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nats`>
I must find a way to fix my bhmj head over the table
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azonenberg>
it's mandatory for CNC
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azonenberg>
since you can't stop and refocus every few pictures
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nats`>
I'll do one later but first will test with my ULWD optic
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Sync__>
azonenberg: can't you do focus detection and adjust accordingly?
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azonenberg>
Sync__: That requires you be doing realtime image processing
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azonenberg>
rather than just step, snap, step, snap
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azonenberg>
followed by offline processing of the data
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azonenberg>
These are megapixel range cameras and only a few FPS
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azonenberg>
interactive focusing would be slow
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azonenberg>
remember the data is going over USB, you dont have a DSP right on the camera to do autofocus
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Sync__>
well with modern computers megapixel processing isn't too slow
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azonenberg>
if i had a bare CCD that would be a lot easier
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azonenberg>
What i meant is
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azonenberg>
moving 9mp uncompressed frames over USB
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azonenberg>
limits your framerate
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soul-d>
azonenberg, look for astonomy camera's diy
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azonenberg>
soul-d: There's no point in going through all that effort
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azonenberg>
Tilt also messes up the focus within a frame anyway
<
soul-d>
or exsiting ones with colling if you have the casg
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azonenberg>
The best option is just to spend the minute or two leveling the specimen
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azonenberg>
then snap all the pictures
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Sync__>
well I guess that is the easiest if you have a decapped chip
<
Sync__>
with wafers you know that they are flat
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azonenberg>
I'm working with bare dies
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azonenberg>
But the back side may still have die attach adhesive on it etc
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azonenberg>
or be attached to the carrier
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azonenberg>
Or even still be in-package
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soul-d>
my first astro cam was a horror 512x somthing that din't even reached 1 fps it used .net drivers :'(
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azonenberg>
My current microscope cam has windows binary blob drivers
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azonenberg>
digshadow reversed the USB driver for a similar chipset though
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azonenberg>
i'm probably going to pick up one of those and use his linux driver
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