Images of V458 Vul
The nova V458 Vul exploded in early August 2007. Images obtained serendipitously shortly before the explosion showed that the exploding star was surrounded by a nebula. Later investigations showed that it was a planetary nebula, formed in an earlier phase of the star's evolution.
A paper about the nebula was published in the Astrophysical Journal Letters on 20 November 2008 (link).
The nebula surrounding Nova V458 Vul, imaged before its central star erupted
The field was observed during the IPHAS survey, before the nova erupted. This image was created by combining the IPHAS images taken in r', i' and Hα filters.