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FORS2:
LSS: wavelength calibration
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FORS2 trending system: HEALTH CHECK report
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Last update: 2014-08-01T02:09:33 (UT)
  | now: 2014-08-01T12:11:21 (UT) muc01 QC pipeline: fors2-4.9.24 (installed 2014-03-11)
same group: lambda_c resolution nwave lambda_temp   EEV:lambda_c EEV:resolution EEV:nwave
General news:
FORS2 news:  
Report news:
DATE*: [?] 2014-07-25
report | NLT
2014-07-26
report | NLT
2014-07-27
report | NLT
2014-07-28
report | NLT
2014-07-29
report | NLT
2014-07-30
report | NLT
2014-07-31
report | NLT
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  last OPSLOG data:
2014-07-30*

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*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
- general comment: after CCD exchanges the thresholds usually need to be adjusted.
Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB yes (0) none   Å VAL5857.0,5873.0 94 central_wlen this | last_yr | all central wavelength for chip 1
2 QC1DB yes (0) none   Å VAL5857.0,5873.0 95 central_wlen this | last_yr | all central wavelength for chip 2
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: OPSLOG data are included
Plot 1
scores: 9|
data source:fors2_lss_wave
(QC1 database)
dataset:central_wlen
average:none
fixed thresholds:5857.0...5873.0Å
N_data plotted:94
[click on plot for closeup]
Plot 2
scores: 9|
data source:fors2_lss_wave
(QC1 database)
dataset:central_wlen
average:none
fixed thresholds:5857.0...5873.0Å
N_data plotted:95
[click on plot for closeup]
This plot

After the wavelength calibration is obtained from an LSS arc lamp exposure, the wavelength corresponding to the central CCD pixel is calculated. The values trended here are for the red sensitive MIT detector, the 300V grism with no filter and a slit width of 0.29". More information can be found on the plot tutorial page  


General information

Click on any of the plots to see a close-up version.

If applicable, the latest values from Paranal ops logs are plotted as blue dots. More information about those values, including a download option, is available in the OPS column.

The latest date is indicated on top of the plot, data points belonging to that date are specially marked.

If configured,

  • 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