SkyServer: GLossary

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central meridian The meridian which passes through the center of the survey area, 12h 20m , defines the central meridian of a scan. The great circle perpendicular to it passing through the survey center at dec=32.8deg is the survey equator.

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name	text
central meridian	The meridian which passes through the center of the survey area, 12h 20m , defines the central meridian of a scan. The great circle perpendicular to it passing through the survey center at dec=32.8deg is the survey equator.