The metrology cameras for Subaru PFS and FMOS
  The Prime Focus Spectrograph (PFS) is a new multi-fiber spectrograph on Subaru telescope. PFS will cover around 1.4 degree diameter field with ~2400 fibers. To ensure precise positioning of the fibers, a metrology camera is designed to provide the fiber position information within 5 {\mu}m error. The final positioning accuracy of PFS is targeted to be better than 10 {\mu}m. The metrology camera will locate at the Cassegrain focus of Subaru telescope to cover the whole focal plane. The PFS metrology camera will also serve for the existing multi-fiber infrared spectrograph FMOS. 
Shiang-Yu Wang, Yen-Shan Hu, Chi-Hung Yan, Yin-Chang Chang, Naoyuki   Tamura, Naruhisa Takato, Atsushi Shimono, Jennifer Kar...
astro-ph.IM