| Parameter | Mand | Type | Default | Constraints |
| wavelength | yes | real list | 15 |
 |
wavelength(s) of emission line(s) in A
|
| order | no | integer |  |
 |
reflection order
|
| instrument | no | string | RGS1 | RGS1, RGS2 |
instrument
|
| deltadisp | no | real | |
 |
source off-axis angle in dispersion direction in arcmin
|
| ocb | no | integer | 3 |
 |
on-chip binning; this impacts the total number of bins per chip
|
| Parameter | Mand | Type | Default | Constraints |