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IMPORTANT: Exposure options for which fixed dither patterns are available in IFU modes are 3x, 4x, 5x, 6x. In other words, the number of exposures in an OB must be the same as the number of points in the dither pattern. |
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For custom dither patterns, constraints on the dither step size are imposed by the WASP to ensure that the guide star remains within the guiding camera field of view. From the perspective of IFU users, careful consideration of the dithering options should be made. Below it's an example of custom dithering. Note that pointings are provided for each dither, rather than the dither pointings from an initial position. The three pointings provided in the example below would be executed as part of one only OB.
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