Plot ? 
Symb ? 
Source * 
Average ? 
Thresholds ? 
N_ data 
QC1 parameter 
Data downloads 
Remarks 
method 
value 
unit 
method 
value 
1 
•  QC1DB 
none 

NONE 
none  
13 
coeff_x_1_0 
this 
last_yr 
all

opt. dist. pol. coeff. 
2 
•  QC1DB 
none 

NONE 
none  
13 
coeff_x_1_0 
this 
last_yr 
all

opt. dist. pol. coeff. 
3 
•  QC1DB 
none 

NONE 
none  
13 
coeff_y_0_1 
this 
last_yr 
all

opt. dist. pol. coeff. 
4 
•  QC1DB 
none 

NONE 
none  
13 
coeff_y_0_1 
this 
last_yr 
all

opt. dist. pol. coeff. 

*Data sources: QC1DB: QC1 database; LOCAL: local data source

Plot 1 scores: not implemented
 data source:  sphere_irdis_distmap (QC1 database) 
dataset:  coeff_x_1_0  • 
average:  none 
thresholds:  none 
N_data plotted:  13 
[click plot for closeup] 
Plot 2 scores: not implemented
 data source:  sphere_irdis_distmap (QC1 database) 
dataset:  coeff_x_1_0  • 
average:  none 
thresholds:  none 
N_data plotted:  13 
[click plot for closeup] 
Plot 3 scores: not implemented
 data source:  sphere_irdis_distmap (QC1 database) 
dataset:  coeff_y_0_1  • 
average:  none 
thresholds:  none 
N_data plotted:  13 
[click plot for closeup] 
Plot 4 scores: not implemented
 data source:  sphere_irdis_distmap (QC1 database) 
dataset:  coeff_y_0_1  • 
average:  none 
thresholds:  none 
N_data plotted:  13 
[click plot for closeup] 
This plot
This plot show the optiocal distortion coefficient X_1_0 and Y_0_1 as a function of the IFS bench temperature.
The polynomial to correct the shifts in x direction is:
Delta X = X_0_0 + X_1_0 * x + X_0_1 * y + X_1_1 * x * y + ...
and for the shifts in ydirection:
Delta Y = Y_0_0 + Y_1_0 * x + Y_0_1 * y + Y_1_1 * x * y + ...
Hence X_1_0 is the first order linear scale (the plate scale) in xdirection and
Y_0_1 is the first order scale in ydirection.
General information
Click on any of the plots to see a closeup version.
The latest date is indicated on top of the plot.
If configured,
 data points belonging to the latest date are specially marked
 statistical averages are indicated by a solid line, and thresholds by broken lines
 outliers are marked by a red asterisk. They are defined as data points outside the
threshold lines
 "aliens" (= data points outside the plot Y limits) are marked by a red arrow (↑ or ↓)
 you can download the data for each parameter set if the 'Data downloads' link shows up
