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FORS2:
LSS: wavelength calibration
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FORS2 trending system: HEALTH CHECK report
Last update: 2012-05-23T12:47:17 (UT)
| now: 2012-05-24T01:00:59 (UT)
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same group: lambda_c lambda_temp resolution nwave
General news: 2012-05-22: The QC cluster (compute platform for QC services) is currently not available. The HC monitors for OMEGACAM, VIRCAM and HAWKI will be frozen until about 2012-05-25.
FORS2 news:  
Report news:  
DATE*: [?] 2012-05-17
report | NR
2012-05-18
report | NR
2012-05-19
report | NR
2012-05-20
report | NR
2012-05-21
report | NR
2012-05-22
report | NR
2012-05-23
report | NR
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  last OPSLOG data:
2012-05-22*

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scores&comments | history ... | plot tutorial ... | contact                 daily/often; important to check     [?]
*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
Plot
?
Symb
?
Source
*
OPS?
**
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB yes (9) MEDIAN 968.93719 NONE VAL910,1010 89 central_resol this | last_yr | all average resolution at center for chip 1
2 QC1DB yes (9) MEDIAN 948.70917 NONE VAL900,1000 89 central_resol this | last_yr | all average resolution at center for chip 2
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
Plot 1
scores: 8|
data source:fors2_lss_wave
(QC1 database)
dataset:central_resol
median:968.93719NONE
fixed thresholds:910.0...1010.0NONE
N_data plotted:89
[click on plot for closeup]
Plot 2
scores: 8|
data source:fors2_lss_wave
(QC1 database)
dataset:central_resol
median:948.70917NONE
fixed thresholds:900.0...1000.0NONE
N_data plotted:89
[click on plot for closeup]
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". 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