High-resolution Focus in CD015

... This is incomplete.  To be used for discussion at 7/31 telecon.

Below are spectral focus plots of SLIT1. The pinhole spot symmetry is good for all these settings, and I'll provide those data later.

Setting 16/7 on diag 23 is the best setting for the left hand side of the detector. I extended the diagonal to lower echelle turns and it gets worse for 17/6, 18/5 ...
Also went to slit3, 2.7km/s and verified that > 103000 resolution is being attained for this setting.
Will show these data when the rest of the slit spectra are taken.

The best setting for the right hand side of the detector is 15/10 on the diagonal 25. Since it appears I may be able to do better at higher diagonals and higher echelle turns I am taking this data now.
Since our best echelle pinhole spectra are from the right hand side, finding the best right hand focus in high-mode may be more relevant.

Spectral FWHM of SLIT1 spectra along Diagonal 25

Spectral FWHM of SLIT1 spectra along Diagonal 24

Spectral FWHM of SLIT1 spectra along Diagonal 23

Spectral FWHM of SLIT1 spectra along Diagonal 22

Spectral FWHM of SLIT1 spectra along Diagonal 21

Spectral FWHM of SLIT1 spectra along Diagonal 20

or

Medium Resolution Pinholes CD015

 Medium resolution mode spectra of C2H2 Q-branch at ~55.6 deg echelle angle.

Best spectral:  12 T around column 600-800
Best spatial: 9T around column 600-900
Roundness: 10-11T around column 600-800

Rinse subtracted data; using slit wheel pinhole only; pinhole spectra are stacked with y-offsets.

Spatial FWHM along columns using the continuum of the rinsed gas-cell

Spectral FWHM of rinse-subtracted pinholes at different columns of the detector

Spectral/Spatial FWHM ratio of pinholes, versus column number

Spatial FWHM of rinse-subtracted pinhole line spectra at different column numbers