.TH sua2 1  WCS "19 November 1999"
.SH Name
sua2 \- Find USNO-A2.0 Catalog stars in a square on the sky
.SH Synopsis
sua2 [options] ra dec system
.SH Description
.I suac
finds all of the U.S. Naval Observatory A2.0 Catalog objects in a specified
region of the sky and lists their sky positions and magnitudes in order of
brightness. Output is to standard out, unless the \-w flag is set, in which
case it goes to objectname.uac or search.uac. It is a link to scat.
.SH Options
.B \-a
list single closest catalog source
.B \-b
Output B1950 (FK4) coordinates
.B \-d
Sort by distance from center instead of flux
.B \-e
Output ecliptic coordinates
.B \-f
Output search center for other programs
.B \-g
Output galactic coordinates
.B \-h
Print heading, else do not 
.B \-i
Print catalog object name, not catalog number (=ua2_region_number)
.B \-j
Output J2000 (FK5) coordinates
.B \-l
Print center and closest star on one line
.B \-m [<bright magnitude>] <faint magnitude>
Limiting catalog magnitude(s) (default none, bright \-2 if only faint is given)
.B \-n <num>
Number of brightest stars to print 
.B \-o <name>
Object name used to name output file
.B \-p
Sort by distance from search center instead of brightness
.B \-q <years>
Equinox of output positions in years
.B \-r <radius>
Search box half-width in arcsec or dd:mm:ss
If negative, this is a radius; if two numbers, first is in right ascension,
second is in declination. (default is 10, that is a 20x20 arcsec box)
.B \-s
Sort by right ascension instead of flux 
.B \-t
Tab table output
.B \-u <num>
Print X Y instead of number in front of non-tab entry
.B \-v
Verbose listing of processing intermediate results
.B \-w
Write tab table output file imagename.uac
.B \-y
Epoch of output positions in years
.SH See Also
scat(1), susac(1), imuac(1), sgsc(1)
.SH Author
Jessica Mink, SAO (jmink@cfa.harvard.edu)