Looking through the Astro Physics 4" field flattener, CFW-5-7 filterwheel opening and Astronomik
Lum filter at the big 1354mm2 (2.1squ inch) 16.8mega pixel chip! Absolutely no vignetting here!

You can see the black chip mask around the chip to prevent stray internal reflections as well as
the anti-dew heaters (gold strips) to keep the outside of the CCD window free from any
condensation and icing in more humid conditions.

The camera has an ultra low reflection CCD window, see the window transmission curve:
http://www.pbase.com/strongmanmike2002/image/125899124/original

FLI web site
http://www.flicamera.com/

PL16803 Specifications

Sensor: KAF-16803
Array Size: 4096 x 4096
Pixel Size: 9 μm
Typical Minimum Cooling: -55º C Below Ambient
Typical Download Speed @ 16-bit:1 MHz, 8 MHz (other speeds available)
Typical System Noise: <9 e- RMS @ 1 MHz
Nonlinearity: <1%
Temperature Stability: 0.1º C
Operating Environment: -30º C - 45º C | 10% - 90% Relative Humidity
Sensor Manufacturer: Kodak
CCD Grades Available: Standard
CCD Type: 1,000,000
Color/Monochrome: Monochrome
Mega Pixels: 16.8
Sensor Diagonal: 52.1 mm
Linear Full Well: 100,000 e-
Typical Dark Current: 0.08 e-/pixel/sec.
Anti Blooming: 400x
Available Shutters: 65 mm
Shutter MTBF: 1,000,000
CCD to Flange Distance: 30.23 mm
Remote Triggering: Standard
Power: 12v
Interface: USB 2.0
Dimensions: 6.2 x 6.2 x 3.8 (157.48 x 157.48 x 96.52)
Peak QE: .69