REVISION DATE: 06-Feb-2018 16:40:25

 
Email from Mike Kehoe on 4/15/2016 3:08 PM: 
 
Greetings All, 
 
Casey has finished aligning RS2.  Please find his preliminary report attached.   Test data is available at the usual site: 
 
-Mike   

Below are my graphs of the helium.bip file. The file contains 30 dark images at 0.1 sec Note some graphs are dark corrected and some are not so check the axis labels to know what you are looking at.

I took the 30 images and meaned them to get the surface plot below.

Figure 1

This is a cross section through the tracks at wavelength pixel 508, with one line for each of the 30 images. The tracks and their shapes look really stable.

Figure 2

Same as the previous graph but zoomed into the bottom to see the level of the darks between the tracks.

Figure 3

Same as figure 2 but for Wavelength pixel 412.

Figure 4

Again this is the mean image with slices thought the image at different wavelength pixels. The pixels choosen are where the helium peaks are and +- pixel pixel around them.

Figure 5

Same as figure 5 but zoomed to the bottom so you can see the darks between the tracks.

Figure 6

Helimu Peak 1 (at pix 251): The same surface plot but showing how individual helium peaks line up from track to track. Looks pretty good!

Figure 7

Helimu Peak 2 (at pix 455): The same surface plot but showing how individual helium peaks line up from track to track. Looks pretty good!

Figure 8

Helimu Peak 3 (at pix 551): The same surface plot but showing how individual helium peaks line up from track to track. Looks pretty good!

Figure 9

Helimu Peak 4 (at pix 604): The same surface plot but showing how individual helium peaks line up from track to track. Looks pretty good!

Figure 10

Mean image binned by track, the x-axis is wavelength pixels.

Figure 11

Close up of one of the helium peaks

Figure 12

Close up of one of the helium peaks

Figure 13

Close up of one of the helium peaks

Figure 14

Close up of one of the helium peaks

Figure 15

MY VERY ROUGH GUESS AT A WAVELENGTH CAL!!! THIS ASSUMES I GUESS CORRECTLY WHICH PEAKS WHERE WHICH HELIUM LINES. Originally I had ~ 506.51, 921.42, but after Mikes email I drop the peak at 683 and changed from 2nd order to linear. Mikes says "pix #1 = 504.70, pix #1024 = 911.97, with pixel separation = 0.40 nm" And Casey says "The spectral range of the system is 503.7 nm to 911.4 nm"

Track, Min,    Max,     diff,    P 
    1, 488.96, 899.94,  0.40       0.000012198 0.389235  488.569116 
    2, 488.79, 899.47,  0.40       0.000011003 0.390172  488.398383 
    3, 489.08, 900.07,  0.40       0.000012764 0.388659  488.695463 
    4, 489.15, 900.13,  0.40       0.000012903 0.388519  488.756692 
    5, 489.11, 900.09,  0.40       0.000012758 0.388661  488.725030 
    6, 489.16, 900.16,  0.40       0.000012857 0.388584  488.767896 
    7, 489.15, 900.14,  0.40       0.000012768 0.388663  488.758026 
    8, 489.13, 900.15,  0.40       0.000012770 0.388686  488.741045 
    9, 489.12, 900.18,  0.40       0.000012936 0.388555  488.735820 
   10, 489.14, 900.15,  0.40       0.000013041 0.388398  488.754869 
   11, 489.11, 900.14,  0.40       0.000013005 0.388466  488.717861 
   12, 489.04, 900.11,  0.40       0.000012886 0.388622  488.650220 
   13, 488.93, 899.97,  0.40       0.000012446 0.389044  488.538319 
   14, 488.94, 900.13,  0.40       0.000012868 0.388764  488.546262 

Figure 16

  Track = The Resonon Track number  
Lwave = Laser Wavelength 
Lpix1 = Laser Pixel found using the max value of the track 
Lpix2 = Laser Pixel found using mygaussfit to fit the laser peak