The DISPAXIS keyword indicates the orientation of dispersed spectra in spectroscopic exposures. A value of 1 indicates that the dispersion is parallel to the X image axis (horizontal) and 2 indicates the Y image axis (vertical).
| Attribute | Value |
|---|---|
| data type | integer |
| enumerated Values | not defined |
| units | |
| example | 2 |
| default value | |
| special processing | OPTIONAL |
| source | Calibration Software |
| software source | |
| calculation | |
| DB destination | ['ScienceCommonExt.dispaxis'] |
| data type in DB | tinyint |
| instrument | MIRI, NIRCAM, NIRISS, NIRSPEC |
| mode | MIR_MRS, MIR_LRS-FIXEDSLIT, MIR_LRS-SLITLESS, NRC_WFSS, NRC_TSGRISM, NIS_SOSS, NIS_WFSS, NRS_FIXEDSLIT, NRS_IFU, NRS_MSASPEC, NRS_BRIGHTOBJ |
| product level | 2b |
| FITS hdu | SCI |
| FITS header section | WCS Parameters |