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ISAAC trending system: HISTORY report
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Last update: 2013-03-30T20:15:12 (UT)
same group: GratingCheck NightAcq DayCalSlit
close window history: 2006 2007 2008 2009 2010 2011 2012   2013   HEALTH
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*Date on this monitor changes at 21:00 UT
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  • Only the first acquisition frame of the Move_to_slit template is shown
  • Flux values are dependent on slit width
Plot
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Symb
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Source
*
Average ? Thresholds ? N_
data
QC1
parameter
Data
downloads
Remarks
method value unit method value
1 QC1DB MEDIAN 510 PIXEL VAL500,521 216 qc_slit_x this | last_yr | all X-position of the slit image
2 QC1DB MEDIAN 532 PIXEL VAL520,540 216 qc_slit_y this | last_yr | all Y-position of the slit image
3 QC1DB MEDIAN -90 DEGREE none  216 qc_slit_a this | last_yr | all Tilt angle of the slit image
4 QC1DB MEDIAN 1.18e+07 ADU none  216 qc_slit_f this | last_yr | all integrated flux of the slit image
*Data sources: QC1DB: QC1 database; LOCAL: local text file
Plot 1
data source:isaac_slit
(QC1 database)
dataset:qc_slit_x
median:510PIXEL
fixed thresholds:500...521PIXEL
N_data plotted:216
[click on plot for closeup]
Plot 2
data source:isaac_slit
(QC1 database)
dataset:qc_slit_y
median:532PIXEL
fixed thresholds:520...540PIXEL
N_data plotted:216
[click on plot for closeup]
Plot 3
data source:isaac_slit
(QC1 database)
dataset:qc_slit_a
median:-90DEGREE
thresholds:none 
N_data plotted:216
[click on plot for closeup]
Plot 4
data source:isaac_slit
(QC1 database)
dataset:qc_slit_f
median:1.18e+07ADU
thresholds:none 
N_data plotted:216
[click on plot for closeup]
This plot

This is the trending plot of the through slit images taken as part of the acquisition template for spectroscopy.

This plot describes:
1. The x-position of the slit image.
2. The y-position of the slit image.
3. The tilt angle of the slit image.
4. The flux of the slit image.

The ISAAC acquisition template used for spectroscopy (science observations as well as standard stars use to calibrate telluric lines) generates an acquisition image, or a difference image with TPL.EXPNO=1, followed by an unpredicted number of through slit images taken in an interactive way by the night time astronomer to align the optics. Only the first in the sequence of the through slit images with TPL.EXPNO=2 is investigated here to check how far the camera has been moved after the last alignment. Find more information about ISAAC slit frames 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