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GrismNR
-
The refractive index at the reference wavelength
- Description:
- This attribute holds refractive index of the grism material at the
reference wavelength (given by attribute GrismWaveR). The default
value is 1.0.
- Type:
- Double precision.
- Class Applicability:
-
GrismMap
-
All GrismMaps have this attribute.
Next: GrismNRP - The rate of change of refractive index with wavelength
Up: AST Attribute Descriptions
Previous: GrismM - The interference order
AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council