Telescope	WIYN 3.5m
Telescope port	Permanently mounted at f/6.3 Nasmyth port
Field of View	1o, 1o circle unvignetted
Pixel Scale	0.11"/pixel
Dectectors	64 Orthogonal Transfer Array CCDs
Gaps between detector cells	3" in x direction 1.2" in y direction
Filling factor of focal plane	>80% (>85% goal)
Initial Filter Set	u,g,r,i,z plus 1 or 2 narrow-band filters
Filter size	42cm x 42cm
Number of filter slots	9
Readout Noise	< 10e-, < 6e- goal
Active image quality improvement	On-chip image motion correction Atmospheric dispersion compensator
Readout Time	< 10 sec sustained bias rate
File Size	2GB/image uncompressed
Nightly Data Volume	0.5 TB to 4 TB, depending on program
Guide star setup overhead	< 40 sec with preimage 0 sec with on-the-fly acquisition
Focus system	Automatic focusing with focus sensor