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Device for determining slope of e.g. equal phase surface of incident wave traversing atmosphere to determine absolute measurement of slope in astronomy field, has calculation unit for determining slope along optical axis
Device for determining slope of e.g. equal phase surface of incident wave traversing atmosphere to determine absolute measurement of slope in astronomy field, has calculation unit for determining slope along optical axis
The device (2) has an interferometer (6) radiating monochromatic beams (12, 14) propagating in propagation directions directed toward a target (8) e.g. mesosphere, such that the beams traverse a turbulent medium separating the interferometer from the target and overlap the target to form interferograms (16, 22). An optical instrument e.g. telescope, has an optical axis (26) directed to the target, and observes the interferograms. A calculation unit (28) determines the wavefront slope along the axis according to interferogram observations, where the axis is present in a median plane (18).
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