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FORS1 trending system: History Plots
Last update: 2009-04-09T06:56:30 (UT)
| now: 2022-05-23T18:00:00 (UT)  
same group: lambda_c lambda_temp resolution nwave
close window history: 2005 2006 2007 2008   2009   HEALTH
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Average ? Thresholds ? N_
method value unit method value
1 QC1DB no MEDIAN 5865.59668 Å VAL5866.2,5867.6 61 central_wlen this | last_yr | all C1 (GG435)
2 QC1DB no MEDIAN 5871.85742 Å VAL5872.8,5874.2 61 central_wlen this | last_yr | all C2 (GG435)
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

After the wavelength calibration is obtained from a MOS arc lamp exposure, the wavelength corresponding to the center of the CCD is computed (only if all slitlets are in the center of the CCD). The values trended here are for the 300V grism with a slit width of 1.0" and the GG435 order separation filter.  

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