Bose-Einstein condensation of large numbers of atoms in a magnetic time-averaged orbiting potential trap

We have observed Bose-Einstein condensation of large numbers of ${}^{87}\mathrm{Rb}$ atoms in a magnetic time-averaged orbiting potential (TOP) trap. Over $1.5\times {10}^9$ atoms are captured in the trap and evaporatively cooled to produce condensates containing up to $2\times {10}^5$ atoms. We discuss special considerations relating to the production of large Bose-Einstein condensates in a TOP trap, and present measurements of the condensate fraction for this case.