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SENSFUNC: Determine Sensitivity Function
SUMMARY:
? Help a Add data c Composite data d Delete data
e Extinction f Fit (overplot) g Fit (redraw) i Info
m Move data o Original data q Quit r Redraw
s Shift data u Undelete data w Change weights I Interrupt
:function [type] :graphs [types] :images [images] :marks [types]
:order [value] :skys [images] :stats [file] :vstats [file]
:colors [colors]
Graph types: a=(resid,airmass), c=(composite,lambda), e=(extinction,lambda)
i=(Fluxed image,lambda), l=(Log of fluxed image, lambda),
r=(resid, lambda), s=(Sensitivity,lambda)
CURSOR KEYS:
? Print help
a Add a point at the cursor position
c Toggle composite points
d Delete point, star, or wavelength nearest the cursor
e Toggle residual extinction correction
f Fit data with a sensitivity function and overplot the fit
g Fit data with a sensitivity function and redraw the graphs
i Print information about point nearest the cursor
m Move point, star, wavelength nearest the cursor to new sensitivity
o Reset to original data
q Quit and write sensitivity function for current aperture
r Redraw graph(s)
s Toggle shift of standard stars to eliminate mean deviations
u Undelete point, star, or wavelength nearest the cursor
w Change weights of point, star, or wavelength nearest the cursor
I Interrupt task immediately
COLON COMMANDS AND ARGUMENTS:
:flux [min] [max] Limits for flux calibrated graphs (INDEF for autoscale)
:function [type] Function to be fit to sensitivity data. The types are:
chebyshev - Chebyshev polynomial
legendre - Legendre polynomial
spline1 - Linear spline
spline3 - Cubic spline
:graphs [types] Graphs to be displayed (up to four). The types are:
a - Residual sensitivity vs airmass
c - Composite residuals and error bars vs wavelength
e - Extinction (and revised extinction) vs wavelength
i - Flux calibrated image vs wavelength
l - Log of flux calibrated image vs wavelength
r - Residual sensitivity vs wavelength
s - Sensitivity vs wavelength
:images [images] Images to flux calibrate and plot (up to four images)
:colors [colors] Line and mark colors to use for line and included, deleted,
and added points. The colors are specified as four
whitespace separated integers between 1 and 9.
:marks [marks] Mark types to use for included, deleted, and added points:
point, box, plus, cross, diamond, hline, vline,
hebar, vebar, circle
:order [order] Order of function (polynomial terms or spline pieces)
:skys [images] Sky images for flux calibration (optional, up to four images)
:stats [file] Statistics about standard stars and sensitivity fit
:vstats [file] Verbose statistics about standard stars and sensitivity fit
EXAMPLES:
:func spline3 Select cubic spline function
:g srae Graph sensitivity, residuals, airmass, and extinction
:g sii Graph sensitivity and two images
:i n1.0004 n1.0008 Set first two images to graph (the defaults are
taken from the standard star list)
:skys n1.0005 Subtract this sky image from first image for calibration
:colors 2 Change only the line color to 2
:colors 2 5 4 3 Change the line and mark colors
:m plus Change the mark type for included points and don't
change the deleted or added point mark type
:stats Print statistics to terminal
:vstats stdstats Print verbose statistics to file
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