autoguider
- noun
- Specialized
- Without an autoguider, the stars in the image would appear as streaks instead of points.
- SBIG autoguider
- CCD autoguider
- autoguider and camera
Examples
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With the latest model, the autoguider automatically compensates for any shifts in alignment.
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The autoguider made it possible to photograph faint galaxies with long exposures.
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She set up the autoguider to keep the telescope perfectly aligned with the moving comet.
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The autoguider helps astronomers track stars accurately.
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Have you seen the new autoguider at the observatory?
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The astronomer adjusted the telescope to follow the moving comet using the autoguider.
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An autoguider helps astrophotographers keep their targets in focus during long exposures.
Synonyms
A device that keeps a camera or telescope pointed at a moving star
How Automatic
- Specialized
- Specialized
Surface Forms
Morphology
autoguider = autoguide (transparent) = auto + guide + er
Adding -er to autoguide yields a thing that performs automatic guiding.
Etymology
Autoguider begins with auto- meaning 'self', as in automatic, and ends with guide meaning 'to lead'. So an autoguider is a device that 'leads' on its own—exactly why it keeps a telescope pointed at a target by making small adjustments.