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INTERACTIVE KEYSTROKE COMMANDS
The following commands must be terminated by a carriage return.
? Print help
: Execute colon command
data Measure object
q Exit task
VALID DATA STRING
x/ra/long y/dec/lat [pmra pmdec [parallax radial velocity]]
... x/ra/long y/dec/lat must be in pixels or the input units
... pmra and pmdec must be in " / year
... parallax must be in "
... radial velocity must be in km / sec
COLON COMMANDS
The following commands must be terminated by a carriage return.
:show Show the input and output coordinate systems
:isystem [string] Show / set the input coordinate system
:osystem [string] Show / set the output coordinate system
:iunits [string string] Show / set the input coordinate units
:ounits [string string] Show / set the output coordinate units
:oformat [string string] Show / set the output coordinate format
VALID INPUT AND OUTPUT COORDINATE SYSTEMS
image [logical/tv/physical/world]
equinox [epoch]
noefk4 [equinox [epoch]]
fk4 [equinox [epoch]]
fk5 [equinox [epoch]]
icrs [equinox [epoch]]
apparent epoch
ecliptic epoch
galactic [epoch]
supergalactic [epoch]
VALID INPUT AND OUTPUT CELESTIAL COORDINATE UNITS
AND THEIR DEFAULT FORMATS
hours %12.3h
degrees %12.2h
radians %13.7g
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