Coffee pot use as cuvette since bottom is fairly flat
1 2 3 blocks used to tilt pot bottom
square spectralon used as ref material inside dry pot
RO water poured in to pot to act as watersample
DAQ start instability causes dark and ref to be on pixels 10:265 and water to be on 9:264
comparison with C:\Artemis\Diasense\Phantom\GLU\water.txt indicates protowave for data acquire up to this date (12/4/2023) is
protowave([1:256]-12.57).  equation on this date is l=11.7764/4*x+1228.8955; this means the constant should be changed to:
1228.8955-12.57*11.7764/4 = 1191.888163.  It also means that the D2k Pixel 57 (1867.7645nm) is roughly pixel 230 with this tuning of the grating.
D2K Pixel 1 (1208.2861nm) is roughly pixel 6 and pixel 1 of the proto is 1194.8nm