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| PhotoTrack |
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PhotoTrack on Microscope tracking a Bright Spot |
The ASI PhotoTrack solves the problem of tracking a moving specimen. Combined with ASI's closed-loop DC servo motor XY stages, PhotoTrack allows you to keep your free-moving samples in your field-of-view (FOV) no matter where they want to go.
PhotoTrack uses a low-light-level rapid position-sensing quadrant PMT sensor to monitor a bright reference spot on the target. It then commands an ASI XY stage to maintain that spot in the center of a microscope’s field-of-view.
 The PhotoTrack is frequently used with a camera to record conditions near the tracked point of interest. When two photoports are not available, a beam splitter may be used to share a microscope's photoport.
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PhotoTrack Sensor Module and a Digital Camera mounted to a Beam Splitter |
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Specifications
| Sensor Mount |
Parfocal C-Mount |
| Sensor Controls |
Manual Gain, On/Off, Iris, Overload Reset |
| Beam Splitter Ratio |
20/80, 10/90, or Dichroic |
| PMT Type |
Hamamatsu 4-channel XY quadrant |
| PMT Protection |
High voltage shutdown on overload |
| PMT Usable Dynamic Range |
> 60 dB |
| Servo Loop Time |
3 milliseconds |
| Read Time |
2 milliseconds |
| Overall Response Time |
< 25 milliseconds |
Sensor Dimensions
(H x W x D, not counting plug) |
74 x 94 x 79 millimeters
2.9 x 3.7 x 3.1 inches |
| Controller for PhotoTrack Sensor |
Specially-configured ASI MS-2000 controllers |
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