; docformat = 'rst'
;+
; Return angular diameter distance to z
;
; See ajs_comdis for keyword parameters
; :Params:
; z, in, required
; Redshift (or array of values)
;-
FUNCTION ajs_angdidis, z, _REF_EXTRA=e
compile_opt idl2
return, ajs_comdis(z, _strict_extra=e) / (1 + z)
END