| --- Fri Oct 11 2013 | 00:00 | |
| azonenberg | Sync__: I'm picking up optics slowly | 10:44 |
|---|---|---|
| azonenberg | just grabbed a newport 2-axis mirror mount and repurposed it as a tilt stage for my microscope | 10:45 |
| Sync__ | yeah I bought two nanostages azonenberg | 11:28 |
| azonenberg | I have two i think 250um/revolution linear stages | 11:28 |
| azonenberg | Might try hooking those up and remove the olympus stage | 11:28 |
| azonenberg | they're a lot more precise | 11:28 |
| azonenberg | just have to machine some base plates or something | 11:28 |
| nats` | grab one from ebay ;) | 11:29 |
| nats` | mine works weel now | 11:29 |
| nats` | well | 11:29 |
| Sync__ | I achieved 100nm positioning with those, they are .5mm/rev but with a 1024count encoder | 11:29 |
| Sync__ | so that is not too bad | 11:29 |
| azonenberg | Sync__: Not bad | 11:29 |
| azonenberg | Mine lack encoders atm | 11:29 |
| azonenberg | I have yet to decide how to mount things on them | 11:29 |
| Sync__ | I more or less have the issue how I bolt them together and insure planarity | 11:30 |
| azonenberg | nats`: I bought one of these http://www.ebay.com/itm/Newport-MM-2-Solid-Mirror-Mount-/360661635707?pt=LH_DefaultDomain_0&hash=item53f91bd27b | 11:30 |
| azonenberg | to use as a tilt stage | 11:31 |
| nats` | azonenberg I didn't do the tilt stage for now :) | 11:34 |
| nats` | I must find a way to fix my bhmj head over the table | 11:35 |
| azonenberg | it's mandatory for CNC | 11:35 |
| azonenberg | since you can't stop and refocus every few pictures | 11:35 |
| nats` | I'll do one later but first will test with my ULWD optic | 11:36 |
| Sync__ | azonenberg: can't you do focus detection and adjust accordingly? | 11:38 |
| azonenberg | Sync__: That requires you be doing realtime image processing | 11:38 |
| azonenberg | rather than just step, snap, step, snap | 11:38 |
| azonenberg | followed by offline processing of the data | 11:38 |
| azonenberg | These are megapixel range cameras and only a few FPS | 11:39 |
| azonenberg | interactive focusing would be slow | 11:39 |
| azonenberg | remember the data is going over USB, you dont have a DSP right on the camera to do autofocus | 11:39 |
| Sync__ | well with modern computers megapixel processing isn't too slow | 11:39 |
| azonenberg | if i had a bare CCD that would be a lot easier | 11:39 |
| azonenberg | What i meant is | 11:39 |
| azonenberg | moving 9mp uncompressed frames over USB | 11:39 |
| azonenberg | limits your framerate | 11:39 |
| soul-d | azonenberg, look for astonomy camera's diy | 11:40 |
| soul-d | astronomy | 11:40 |
| azonenberg | soul-d: There's no point in going through all that effort | 11:40 |
| azonenberg | Tilt also messes up the focus within a frame anyway | 11:40 |
| soul-d | or exsiting ones with colling if you have the casg | 11:40 |
| azonenberg | The best option is just to spend the minute or two leveling the specimen | 11:40 |
| azonenberg | then snap all the pictures | 11:40 |
| Sync__ | well I guess that is the easiest if you have a decapped chip | 11:41 |
| Sync__ | with wafers you know that they are flat | 11:41 |
| azonenberg | I'm working with bare dies | 11:41 |
| azonenberg | But the back side may still have die attach adhesive on it etc | 11:41 |
| azonenberg | or be attached to the carrier | 11:41 |
| azonenberg | Or even still be in-package | 11:42 |
| soul-d | my first astro cam was a horror 512x somthing that din't even reached 1 fps it used .net drivers :'( | 11:46 |
| azonenberg | Lol | 11:48 |
| azonenberg | My current microscope cam has windows binary blob drivers | 11:48 |
| azonenberg | digshadow reversed the USB driver for a similar chipset though | 11:48 |
| azonenberg | i'm probably going to pick up one of those and use his linux driver | 11:48 |
| --- Sat Oct 12 2013 | 00:00 | |
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