On April 23, 2009, it was announced that the focus had been successfully optimized by moving the primary mirror 40 micrometers (1.6 thousandths of an inch) towards the focal plane and tilting the primary mirror 0.0072 degree.
Pada tanggal 23 April 2009 diumumkan bahwa fokusnya telah berhasil dioptimasi dengan memindahkan cermin utamanya 40 mikron (1,6 perseribu inci) menuju bidang fokus dan memiringkan cermin utama itu 0,0072 derajat.