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FORS1:
LSS: wavelength calibration
old CCD
(before 2007-03-25)
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FORS1 trending system: History Plots
Last update: 2009-04-09T06:56:02 (UT)
| now: 2022-06-27T23:47:40 (UT)  
same group: lambda_c lambda_temp resolution nwave
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Plot
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Symb
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Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB no MEDIAN 1013.16827 NONE 5%± 50.65841 82 central_resol this | last_yr | all C1
2 QC1DB no MEDIAN 1022.91553 NONE 3%± 30.68747 82 central_resol this | last_yr | all C2
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

From a wavelength calibrated LSS arc lamp exposure, the mean spectral resolution from all lines in the catalog is computed. Each single spectral resolution is computed as the ratio between the arc lamp line wavelength and its FWHM. The values trended here are for the 300V grism with no filter and a slit width of 0.29".  


General information

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