On 2002-04-01 23:48, ee_freak wrote:
I think that the more accurate method would be laser of some sort of optical device but I 't know almost nothing about that.
The practical method might be a decoder. I had seen some miniature machine tool use a radial decoder to read the position of the dial.Its accuracy is about 0.001" +-0.0002" or something like that. What kind of focuser you're using? A rack type or Crayford style? BTW I guess that you're talking about telescope focuser :wink:.
good luck,
ee_freak
I have a focuser that has a 2 inch travel between each end. I need to measure the focus position with the best accuracy possible, what kind of sensors are there to make this type of measurement?
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