He also discovered several novas, including V1493 Aql (Nova Aquilae 1999), V2275 Cyg (Nova Cygni 2001 no. 2), V574 Pup (Nova Puppis 2004), V2467 Cyg (Nova Cygni 2007) and V459 Vul (Nova Vulpeculae 2007 no.2).
