surfphot

COMPUTE/FCOEFF infram orient rin,rout,rstep outtab
compute fourier coefficients of azimuthal profiles in spiral galaxies
COMPUTE/GRID angle
create image and table with distorted rect. and evenly spaced grid
COMPUTE/SKY infram1 infram2 caltab method sky_factor
compute the sky background and restitute the frame
FILTER/FILL inframe outframe rx,ry thresh
fill up low-flux (below threshold) pixels with nearby high-flux pixels
FIND/PAIR intab1 intab2 outtab colums [errors] [coo_sys]
match (pair) two coordinates tables and produce an output table
FIND/POSINC infram x_pos,y_pos rin,rout,rstep
find the position angle and inclination of a galaxy
FIT/BACKGROUND outframe = inframe(s) [deg,it] [clp1,clpn] [skew] [outbck]
FIT/BACKGROUND outframe = inframe(s) [coef] [outbck]
FIT/BACKGROUND inframe(s) [deg,it] [clp1,clpn] [skew] [outbck]
FIT/BACKGROUND inframe(s) [coef] [outbck]
compute 2-dim. polynomial fit of the background
FIT/ELL1 inframe outframe l_iso,h_iso x_cen,y_cen max_rad
fit an ellips with respect to predefined center
FIT/ELL2 inframe pol_opt iso_tol iso_levels [center[ [radius] [sky_level]
fit an ellips with respect to predefined center
FIT/ELL3 inframe outframe [step] [x,y] [low,high] [min,max] [opt]
fit ellipses to the isophotes of an object in a 2-dim. frame
FIT/POSINC infram orient rin,rout,rstep region
fit the position angle and inclination to 2nd and 4th harmonic
INTEGRATE/ELLIPS frame [ellips_par] [flag]
integrate pixel intensities within ellipse in 2-dim. image
NORMALIZE/IMAGE infram outfram trunc_vals control_vals
normalize and truncate a frame
REBIN/DECONVOLVE frame psf result zoom_x,zoom_y n_iter
rebin image linearly in space and simultaneously deconvolve it with psf
RECTIFY/IMAGE in out table [nrep] [deconvol_flag]
rectify geometrically a distorted direct image
SUBTRACT/SKY inframe outframe nx,ny
remove sky by subtraction of histogram-modeled substitute-sky