Flat Field Images

Flats must be taken for each spectral line in your sequence, i.e. for each prefilter setting. If, for example, you are running a program combining H-alpha and Fe 6302, you need to take flats for both lines.

First of all, stop the AO and CT systems, then

1. For the red beam:
   

   Run Mode:	Flat Field	for all cameras
   	Pol Sum Flat	for SOUP camera if doing polarimetry
   Enable:	SOUP	for the SOUP camera
   Repeats:	0
   Frames:	125

2. Put telescope in flat field mode
3. Press start and run until you have about 10 sums per state
4. Stop telescope flat field mode

5. For the blue beam:
   

   Run Mode:	Flat field	for all cameras
   Enable:	Rotatable Filter	for rotatable filter camera
   Repeats:	0
   Frames:	100

6. Put telescope in flat field mode
7. Press start and run until you have about 10 sums for each rotatable filter angle.

8. Repeat from 1 for all spectral lines in your SOUP sequence.

9. Stop telescope flat field mode

10. Do flats for the next SOUP config file containing the calibration information for the next spectral line in your sequence (repeat until you made flats for all your observed spectral lines)