Table 11
AOT_WAVEFRONT_SENSORS fields.
| Name | Type | Unit | Description |
|---|---|---|---|
| UID | str | n.a. | Unique ID that identifies the wavefront sensor.(a,b) |
| TYPE | str | n.a. | Indicates the type of wavefront sensor (either ‘Shack-Hartmann’ or ‘Pyramid’).(a) |
| SOURCE_UID | str | n.a. | AOT_SOURCES row-reference. Indicates source being sensed.(a) |
| DIMENSIONS | int | count | Number of dimensions being measured by each subaperture. For ‘Shack-Hartmann’ this must be equal to 2 (horizontal and vertical offset). For ‘Pyramid’ this must be equal to either 2 (if the signals are also interpreted as horizontal and vertical offsets), 1 (if the subapertures overlap and are interpreted as a single signal) or the number of sides of the pyramid (that is, N_SIDES signals).(a) |
| N_VALID_SUBAPERTURES | int | count | Number of valid subapertures (must coincide with SUBAPERTURE_MASK data).(a) |
| MEASUREMENTS | str | n.a. | Image-reference. |
| REF_MEASUREMENTS | str | n.a. | Image-reference. |
| SUBAPERTURE_MASK | str | n.a. | Image-reference. |
| MASK_X_OFFSETS | lst | pix | List of horizontal offsets in detector pixels. Each offset defines the lowest horizontal position occupied by the respective mask. (c) |
| MASK_Y_OFFSETS | lst | pix | List of vertical offsets in detector pixels. Each offset defines the lowest |
| vertical position occupied by the respective mask. (c) | |||
| SUBAPERTURE_SIZE | flt | pix | Size of each subaperture in detector pixels. |
| SUBAPERTURE_INTENSITIES | str | n.a. | Image-reference. |
| WAVELENGTH | flt | m | Wavelength being sensed. |
| OPTICAL_GAIN | str | n.a. | Image-reference. |
| TRANSFORMATION_MATRIX | str | n.a. | Image-reference. |
| DETECTOR_UID | str | n.a. | AOT_DETECTORS row-reference. |
| ABERRATION_UID | str | n.a. | AOT_ABERRATIONS row-reference. |
| NCPA_UID | str | n.a. | AOT_ABERRATIONS row-reference, which describes the non-common |
| path aberrations between the wavefront sensor and science detector. |
Notes. (a)Strictly mandatory (value must not be null). (b)All entries in this field must be unique. (c)For each row in the table, entries in these fields must have the same length, equal to the number of masks projected on the detector pixels (there must be one mask for ‘Shack-Hartmann’ and as many as the number of pyramid sides for ‘Pyramid’).
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