FITS headers for {{ filename }}

{% for hdu in hdus %} {% for card in hdu.header.cards %} {% if card.keyword in ('COMMENT', 'HISTORY') %} {% else %} {% endif %} {% endfor %} {% endfor %}
Keyword Value Comment
HDU #{{ loop.index0 }} in {{ filename }}
{{ card.keyword }}{{ card.value }}{{ card.value }} {{ card.comment }}