# Grism dispersion orders¶

aXeSIM able to simulate several dispersion orders but we have some computation issue

In waiting to fix the problem in aXeSIM c code, we change the python code (simdispim.py) to compute separately each order.
The PSF description can be described independently for each beam.
For example, for the beam B:

PSFSIG1B 1.0
PSFSIG2B 2.0
PSFCB 0.5


## TODO¶

• Fix the problem in the c code.