GWA_XTIL

Grating wheel tilt along instrmnt model Y axis

Grating wheel tilt sensor value GWA_X_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 X axis, while in the NIRSpec instrument model (used to define the WCS of the data) this is the angle AROUND the X axis, and hence is equivalent to the angle along the Y 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_X_TILT_AVGED:EXPSTART:EXPEND
calculation
DB destination ['NirspecScience.gwa_xtil']
data type in DB float
instrument NIRSPEC
mode All
product level 1b
FITS hdu PRIMARY
FITS header section Instrument