Background Information: Laser Guide Stars

From the perspective of the telescope, this glow appears as a relatively dim star, bright enough to provide a reference or guide star. This artificial guide star allows continuous assessment of how the atmosphere is distorting starlight passing through the column of air that the telescope is observing through.

Credit:

NOIRLab

About the Image

Id:gemini0504d
Type:Artwork
Release date:April 28, 2005, 8 p.m.
Related releases:gemini0504
Size:794 x 595 px

About the Object

Category:Illustrations

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