CCD Array

The detector arrays consists of (8) 2048 x 4096 pixel CCDs, arranged in a 2 x 4 array, to give a square detector area of 8192 pixels by 8192 pixels. The individual CCDs are three-side buttable.

• CCD and array flatness requirements:
  $\pm$ 15 microns over the entire focal surface (goal)
  40 microns P-V over each detector (SITe specification)

• Gap requirements:
  short side gap req.: < 0.5 mm
  long side gap req.: < 0.5 mm

• Read noise requirements:
  2 e^- goal (at XXX kpix/sec TBD)
  4 e^- required (at XXX kpix/sec TBD)

• Dark current requirements:
  <3 elec/pix/hr at -100C (SITe specification)

• Spurious charge injection requirements:
  TBD

• Fringing requirements:
  less than 1% (goal) at 0.9 microns
  less than 3% (req.) at 0.9 microns

• Anti-reflection coatings:
  TBD