ISAAC trending system: HISTORY plot
Last update: 2008-07-24T14:45:51 (UT)
same group: GratingCheck NightAcq DayCalSlit
close window history: 2006 2007   2008   2009   2010 2011 2012 2013   HEALTH
  ... ... ... ... ...
*Date on this monitor changes at 21:00 UT
Print: Information and research:
- png file - advanced studies: QC1 browser | QC1 plotter
  • Only the first acquisition frame of the Move_to_slit template is shown
  • Flux values are dependent on slit width
Plot
[info]
Symbol
[info]
Source* Average [info] Thresholds [info] N_data Data downloads Remarks
method value unit method value
1 QC1DB MEDIAN 516.01758 PIXEL none   375 this | last_yr | all X-position of the slit image
2 QC1DB MEDIAN 499.50000 PIXEL none   375 this | last_yr | all Y-position of the slit image
3 QC1DB MEDIAN -89.51372 DEGREE none   375 this | last_yr | all Tilt angle of the slit image
4 QC1DB MEDIAN 8931412.00000 ADU none   375 this | last_yr | all integrated flux of the slit image
*Data sources: QC1DB: QC1 database; LOCAL: local text file
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