Halachik Sources re Illumination of a Megillah (compiled by David Mescheloff)
The unknown author at the following site believes there's no problem, but gives neither references nor reasons:While there might seem to be historical support for his view, as from almost four centuries ago:
nevertheless, history doesn't tell you whether something was approved l'chatekhilah, or even b'dieved.
Check out what HaRav Avraham Yosef indicates in the name of his father, haRav Ovadya Yosef, at:
and as is succinctly summarized (with a solid Ashkenazi source) at: