This parameter is determined from an overscan-subtracted calibration
lamp exposure in LSS mode (taken with the template
FORS2_lss_tec_flatLampcheck). The total signal is integrated and
normalized by the exposure time and the total number of original CCD
pixels (keeping into account possible binning). More information can
be found in the plot
tutorial.
FFB12
Monitoring the lamp flux of the two
blue low brightness halogen lamps FlatBlue+1 and FlatBlue+2
(only used for imaging screen flats) with a spectroscopic setup.
FFB34
Monitoring the lamp flux of the two
high brightness blue halogen lamps FlatBlue+3 and FlatBlue+4
used for blue (G300V, G600B) spectroscopic setups.
FFR34
Monitoring the lamp flux of the two
red halogen lamps FlatRed+3 and FlatRed+4
used for red spectroscopic setups.
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
mirror sites:
PL
HQ
score overview
