GrismAlpha

The angle of incidence of the incoming light on the grating surface

Description:

This attribute holds the angle between the incoming light and the normal to the grating surface, in radians. The default value is 0.

Note, the value of this attribute may changed only if the GrismMap has no more than one reference. That is, an error is reported if the GrismMap has been cloned, either by including it within another object such as a CmpMap or FrameSet or by calling the astClone function.

Type:
Double precision.

Applicability

GrismMap
All GrismMaps have this attribute.