# SKY FITTING PARAMETERS

smode,s,h,"concentric","|concentric|offset|",,Position of sky aperture
sgeometry,s,h,"circle","|circle|ellipse|rectangle|polygon|",,The sky annulus geometry
srannulus,r,h,20.0,,,Inner radius of sky annulus in scale units
swannulus,r,h,5.0,,,Width of sky annulus in scale units
saxratio,r,h,1.0,0.0,1.0,Ratio of short to long axis of sky annulus
sposangle,r,h,0.0,0.0,360.0,Position angle of long axis of sky annulus 
salgorithm,s,h,"hcentroid","|none|constant|mean|median|mode|hcentroid|hofilter|hcrosscor|hgauss|",,Sky fitting algorithm
sconstant,r,h,0.0,,,User sky value for constant sky
shwidth,r,h,3.0,,,Half width of histogram in sky sigma
shbinsize,r,h,0.20,,,Binsize of histogram in sky sigma
shsmooth,b,h,yes,,,Boxcar smooth the histogram
smaxiter,i,h,10,,,Maximum number of sky fitting iterations
sloclip,r,h,0.0,,,Lower clipping factor in percent
shiclip,r,h,0.0,,,Upper clipping factor in percent
snreject,i,h,50,,,Maximum number of sky fitting rejection iterations
sloreject,r,h,3.0,,,Lower K-sigma rejection limit in sky sigma
shireject,r,h,3.0,,,Upper K-sigma rejection limit in sky sigma
srgrow,r,h,0.0,,,Region growing radius in scale units
skymark,b,h,yes,,,Mark the sky annulus on the display
scolormark,s,h,"yellow","|red|blue|green|yellow|",,The color of the marked sky annulus
mode,s,h,'ql'