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# APFIT

input,s,a,,,,List of images to fit
output,s,a,,,,List of output images
apertures,s,h,"",,,Apertures
fittype,s,a,"difference","fit|difference|ratio",,Type of output fit
references,s,h,"",,,"List of reference images
"
interactive,b,h,yes,,,Run task interactively?
find,b,h,yes,,,Find apertures?
recenter,b,h,yes,,,Recenter apertures?
resize,b,h,yes,,,Resize apertures?
edit,b,h,yes,,,Edit apertures?
trace,b,h,yes,,,Trace apertures?
fittrace,b,h,yes,,,Fit traced points interactively?
fit,b,h,yes,,,"Fit apertures?
"
line,i,h,INDEF,1,,Dispersion line
nsum,i,h,10,,,Number of dispersion lines to sum or median
threshold,r,h,10.,,,"Division threshold for ratio fit
"
background,s,h,"none","none|average|median|minimum|fit",,Background to subtract
pfit,s,h,"fit1d","fit1d|fit2d",,Profile fitting type (fit1d|fit2d)
clean,b,h,no,,,Detect and replace bad pixels?
skybox,i,h,1,1,,Box car smoothing length for sky
saturation,r,h,INDEF,,,Saturation level
readnoise,s,h,"0.",,,Read out noise sigma (photons)
gain,s,h,"1.",,,Photon gain (photons/data number)
lsigma,r,h,4.,0.,,Lower rejection threshold
usigma,r,h,4.,0.,,Upper rejection threshold