package Astro::Observation;

use Astro::Observation::Simple;
use Astro::Observation::Complex;

sub new {
  my $self  = shift;
  my $class = shift;

  return Astro::Observation::Simple->new(@_)  if 'simple' eq $class;
  return Astro::Observation::Complex->new(@_) if 'complex' eq $class;
  return undef;
}

##</code><code>##

my $obs = Astro::Observation->new("simple",'foo');
my $obc = Astro::Observation->new("complex",'bar');