AIPS NRAO AIPS HELP file for EPOCONV in 31DEC18



As of Sun Apr 22 17:41:05 2018


EPOCONV: Verb to convert between B1950 and J2000 coordinates

INPUTS

          Input adverbs
OPTYPE                             '1950' => J2000 -> B1950
                                   else B1950 -> J2000
         $Input/output adverbs
COORDINA $                         Coordinate

HELP SECTION

EPOCONV
Type:  verb
Use:   To convert between B1950 and J2000 coordinates in an adverb.
Input adverbs:
  OPTYPE.....The epoch to which coordinates are translated:
                '1950' => convert J2000 in COORDINA to B1950
                else      convert B1950 in COORDINA to J2000
Input/output adverbs
  COORDINA...The X and Y coordinates are found as:
             Xpos = abs(CO(1)) + abs(CO(2))/60 + abs(CO(3))/3600
                if any of CO(1), CO(2), CO(3) < 0: Xpos = -Xpos
             Ypos = abs(CO(4)) + abs(CO(5))/60 + abs(CO(6))/3600
                if any of CO(4), CO(5), CO(6) < 0: Ypos = -Ypos
             These are RA in time units followed by Dec in degree
             units.

EXPLAIN SECTION


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