try {
saxBuilder.setFeature("http://apache.org/xml/features/validation/schema",false);
saxBuilder.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
xml = saxBuilder.build(file);
} catch (Exception e) {
throw new FitsToolException("Error parsing "+file.getPath(),e);
}
if(xml != null) {
//assume we have at least well formed XML
Element identification = new Element("identification",fitsNS);
Element identity = new Element("identity",fitsNS);