SN 2004em:<br>
<br>
Keck/LRIS, Oct 18, Ellis and Gal-Yam<br>
P200/DBSP, Nov 18, Moon and Cenko<br>
P200/DBSP, Dec 4, Gal-Yam and Cenko<br>
P200/DBSP, Apr 4, Moon+Cenko<br>