High-low, 5.5 um at negative and positive angles

The purpose of these tests was to find which echelle orders work best for observing 5.5 um 

(1818cm-1) with largest feasible wavelength coverage. 

order angle  90%flux    largest dash

-4 -21.082 deg   7.2 adu/sec   5pix, not 7 pix

-3 -16.020 deg   22.3adu/sec 5pix blurs on blue side // doesn't work

-2 -11.073 deg  did not check

-1 -6.198 deg    did not check

 1 3.483 deg     did not check

 2 8.358 deg     67.3adu/sec 5pix blurs everywhere

 3 13.305 deg   52.0adu/sec 5pix blurs everywhere

 4 18.367 deg   31.8adu/sec 5pix

 5 23.596 deg   11.8adu/sec 7pix

the "90% flux" 

all images are taken with same OTPAT, with Fowler 7 signal, and divided by exposure time.

to get 90%, i sort the entire array, and take the mean around 2000 pixels nearest to the 0.90*(1024^2) of the flux order pixels. This is responsive to the continuum levels in the orders. 

Snapshots of the settings:

1818cm-1, -4th order, 5-pix decker. Stretch: 0-50.

1818cm-1, -3rd, 5-pix decker, Stretch: 0-50.

1818cm-1, +2nd order, 5-pix decker. Stretch: 0:150

1818cm-1, +3rd order, 5-pix decker. Stretch: 0:150

1818cm-1, 4th order, 5-pix decker, Stretch: 0:100

1818cm-1, 5th order, 7-pix decker, Stretch: 0-100