Mati Morel has provided a comparison star sequence (email to vss-participants egroup) which is now incorporated the AAVSO charts for the nova.

The nova has faded to below V=13 by Aug 18 and is considered likely to be a “fast nova”. This makes observations all the more urgent.

The nova has received the official designation V2672 Oph

Nova Ophiuchi 2009, discovered 2009-08-16

Charts: http://www.aavso.org/observing/charts/vsp/
Information (incl. re data submission) – see News and Announcements at http://www.aavso.org

Source: http://www.aavso.org, http://www.cfa.harvard.edu/iau/cbat.html