Changes
/* Setting up the Grating */
| CuAr
| None
| 5.0
|-
| 5
| CuNe
| GG495
| -3.0
|-
| 5
| CuAr
| BG39
| 5.0
|-
| 6
| CuAr
| None
| 11.0
|-
| 7
| CuAr
| BG38
| 15.0
|-
| 8
| CuAr
| GG495
| 12.0
|-
| 8
| CuAr
| BG39
| 8.0
|-
| 9
| CuAr
| GG495
| 4.0
|-
| 9
| CuAr
| BG39
| -4.0
|-
| 10
| CuAr
| GG495
| -7.0
|-
| 11
| CuAr
| GG495
| 7.0
|-
| 12
| CuAr
| GG495
| 14.0
|}
* If a grating is mounted in the spectrograph, it will be indicated at the bottom of the "Instrument Setup" section, e.g. "gr8" in the Grating field shows that G8 is installed. Above that is the grating angle field. If you need to mount a different grating, rotate the grating to 0 degrees by entering 0 in the "Grating angle" box and pressing "Go".
* Once you have the correct grating in the spectrograph, enter the approximate starting angle (given in the grating table above) in the "Grating angle" box and click "Go". Compare the resulting arc spectrum with the arc maps in Chapter 10 of the old manual. Automated grating angle determination is on the way, but has yet to be implemented in the Quickquick-Look look GUI.
* The software knows which order-blocking filters should be used with each grating, but it's still a good idea to check that the correct filter is selected (refer to the table above). If necessary, select the required filter from the drop-down menu below the grating angle control and click "Go".
