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ISAAC trending system: FULL plot
Last update: 2009-01-28T02:19:26 (UT)
| now: 2026-06-09T06:58:09 (UT)
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Plot
?		 Symb
?		 Source
*		 OPS?
**		 Average ? Thresholds ? N_
data		 QC1
parameter		 Data
downloads		 Remarks
method value unit method value
1 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm J+Block filter
2 •QC1DB no MEDIAN -9.65999 MAG/AS2 none   55 qc_sky_mag all (full time range) Sky brightness for LW-arm, H filter
3 •QC1DB no MEDIAN -10.4479 MAG/AS2 none   74 qc_sky_mag all (full time range) Sky brightness for LW-arm, Ks filter
4 •QC1DB no MEDIAN 0.0 MAG/AS2 none   284 qc_sky_mag all (full time range) Sky brightness for LW-arm, L filter
5 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_3.21 filter chopping=True
5 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_3.21 filter chopping=False
6 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_3.28 filter chopping=True
6 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_3.28 filter chopping=False
7 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_3.80 filter
8 •QC1DB no MEDIAN   MAG/AS2 none   0 qc_sky_mag all (full time range) Sky brightness for LW-arm, NB_4.07 filter
*Data sources: QC1DB: QC1 database; LOCAL: local text file | **OPS: to indicate that OPSLOG data are included
This plot

This is the trending plot for the ISAAC QC parameters derived from science imaging pipeline products. The sky brightness is measured:
Dark subtracted and flatfielded raw science imaging frames are used for the sky extraction subroutine, that determines the sky level in ADU for each raw frame. The median sky level of the stack is taken. The counts are converted in instrumental magnitudes per square arc second. No extinction correction is applied, no photometric zeropoint is applied.

These plots describe:
Fig. 1.sky brightness, for LW J+Block.
Fig. 2.sky brightness, for LW H.
Fig. 3.sky brightness, for LW Ks.
Fig. 4.sky brightness, for LW L.
Fig. 5.sky brightness, for LW NB_3.21 chopping and jitter observations are plot with different symbols.
Fig. 6.sky brightness, for LW NB_3.28 chopping and jitter observations are plot with different symbols.
Fig. 7.sky brightness, for LW NB_3.80.
Fig. 8.sky brightness, for LW NB_4.07.

Find more information about ISAAC science imaging products here.

 

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