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Rectangle
This panel is only visible when ``1 rectangular field'' is selected in the Source panel.
- Coords Type: Field centre in absolute or relative coordinates. Relative positions are offset from the source coordinate.
- Field Centre Coordinates (Absolute)
- System: Coordinate System.
- Sexagesimal display: Check to switch between the
coordinates formats.
- RA: The centre coordinate of the rectangle in Right Ascension.
- DEC: The centre coordinate of the rectangle in Declination.
- Field Centre Coordinates (Relative)
- Offset(Longitude): Longitude offset of the centre of the rectangle from the source coordinate.
- Offset(latitude): Latitude offset of the centre of the rectangle from the source coordinate.
- p length: Length of one side of the rectangle.
- q length: Length of the other side of the rectangle.
- Position Angle: Position angle of the ``p'' side of the rectangle from the vertical direction.
- Spacing: Spacing of the data required within the rectangle. Can be specified in arcmin or in fraction of the antenna beam. Nyquist spacing is the default.
- Reset to Nyquist: Reset the spacing to the Nyquist sampling.
- Export: Export the pointings (12-m and 7-m array) to disk.
Figure 5.4:
The Rectangle panel of a Science Goal's Field Setup.
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The ALMA OT Team, 2013 Feb 27