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Interactive Keystroke Commands
? Print help
: Colon commands
v Verify the critical parameters
w Save the current parameters
d Plot radial profile of star near cursor
i Interactively set parameters using star near cursor
f Find stars in the image
spbar Find stars in the image, output results
q Exit task
Colon Commands
:show [data/center] List the parameters
Colon Parameter Editing Commands
# Image and file name parameters
:image [string] Image name
:output [string] Output file name
# Data dependent parameters
:scale [value] Image scale (units per pixel)
:fwhmpsf [value] Full width half maximum of psf (scale units)
:emission [y/n] Emission feature (y), absorption (n)
:sigma [value] Standard deviation of sky (counts)
:datamin [value] Minimum good data value (counts)
:datamax [value] Maximum good data value (counts)
# Noise description parameters
:noise [string] Noise model (constant|poisson)
:gain [string] Gain image header keyword
:ccdread [string] Readout noise image header keyword
:epadu [value] Gain (electrons per adu)
:readnoise [value] Readout noise (electrons)
# Observation parameters
:exposure [string] Exposure time image header keyword
:airmass [string] Airmass image header keyword
:filter [string] Filter image header keyword
:obstime [string] Time of observation image header keyword
:itime [value] Exposure time (time units)
:xairmass [value] Airmass value (number)
:ifilter [string] Filter id string
:otime [string] Time of observation (time units)
# Object detection parameters
:nsigma [value] Size of Gaussian kernel (sigma)
:threshold [value] Detection intensity threshold (counts)
:ratio [value] Sigmay / sigmax of Gaussian kernel
:theta [value] Position angle of Gaussian kernel
:sharplo [value] Lower bound on sharpness
:sharphi [value] Upper bound on sharpness
:roundlo [value] Lower bound on roundness
:roundhi [value] Upper bound on roundness
# Plotting and marking commands
:mkdetections [y/n] Mark detections on the image display
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