Grating wheel tilt sensor value GWA_Y_TILT_AVGED, corrected for sensor supply voltage offsets and averaged over multiple samples. In the instrument/wheel-centric reference frame this is the angle ALONG the Y axis, while in the NIRSpec instrument model (used to define the WCS of the data) this is the angle AROUND the Y axis, and hence is equivalent to the angle along the X axis.
| Attribute | Value |
|---|---|
| data type | float |
| enumerated Values | not defined |
| units | TBD |
| example | 0.0 |
| default value | 0.0 |
| special processing | not defined |
| source | Engineering Service |
| software source | ENGSERVICE:INRSI_GWA_Y_TILT_AVGED:EXPSTART:EXPEND |
| calculation | |
| DB destination | ['NirspecScience.gwa_ytil'] |
| data type in DB | float |
| instrument | NIRSPEC |
| mode | All |
| product level | 1b |
| FITS hdu | PRIMARY |
| FITS header section | Instrument |