function oc_star_set_invalid, stars, VERBOSE=verbose

; Sets all of the relevant fields in a star to be invalid, as defined in overview design document.
;
; Can be passed an arry or scalar.
;
; HBT 7-Dec-2005: Original version

  nstars	= sizex(stars)

  for i = 0, nstars-1 do begin
    stars[i].idcat		= 'none'
    stars[i].id			= 'none'
    stars[i].idcat 		= 'none'
    stars[i].id			= 'none'
    stars[i].et			= -999d
    stars[i].ra			= -999d
    stars[i].dec		= -999d
    stars[i].raerr		= -999d
    stars[i].decerr		= -999d
    stars[i].radot		= -999d
    stars[i].decdot		= -999d
    stars[i].radoterr		= -999d
    stars[i].decdoterr		= -999d
    stars[i].mag[0:*]		= -999d
    stars[i].magerr[0:*]	= -999d
    stars[i].SpTcat		= 'none'
    stars[i].SpT		= ''

  end

  if is_scalar(stars) then return, stars[0]
  if is_array(stars)  then return, stars

end