IRAF Help package for grasp.gongcor:
centro - Find the centroid of the solar image
clampc - Clamp calibration correction for GONG+ data
clampr - Clamp calibration correction
ephmvc - Determine and apply ephemeris velocity corrections
fillin - Fill in a missing image using linear interpolation
fits2d - 2d, weighted, polynomial fit
fndlmb - Determine the figure of the limb of the solar image
geom - A more robust fndlmb program
gpflat -Flat field GONG+ intensity images
grflat - Flat field intensity images
hgeom - Determine figure of the limb using Hankel geometry routine
iiivim - Transform 3 phase intensity images to
velocity, intensity, and modulation images
imprnt - Print image pixel values or image statistics
lmbcor - Correct the figure of the limb of the solar image
lmbsta - Calculate statistics for an elliptic data window
remap - Remap the input image using bicubic interpolation
solrot - Apply solar rotation and red shift velocity corrections
trendr - Fit and remove a 2nd order polynomial from the solar disk
trendt - Fit a 2nd order polynomial to the solar disk
xcmap - Calculate a mapping function using crosscorrelation
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