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| Item | 683s |
| Brand | Quantum Scientific Imaging (QSI) |
| CCD Manufacturer & Model | Kodak KAF-8300 |
| CCD Architecture | Full Frame |
| Microlens | Yes |
| Anti-blooming | Yes (1000x) |
| Imager Size: (WxH) | 17.96mm x 13.52mm |
| Pixel Array (WxH): | 3348×2574 total pixels, 3326×2504 active (visible) |
| Pixel Size: | 5.4µm x 5.4µm |
| Pixel Full Well Depth | 25,500 electrons |
| Absolute Quantum Efficiency | Peak: 57% |
| 400nm: 38% | |
| Pixel Dark Current | <0.02 electron per second at -10°C |
| Dark Current Doubling | 5.8° C |
| Intrinsic Read Noise | 8 electrons RMS |
| Dynamic Range | 70 db |
| Charge Transfer Efficiency | >0.999995 |
| CCD Image Sensor | KAF-8300 |
| Electronic Shutter | Mechanical, exposure range: 0.03 seconds to 240 minutes |
| Mechanical Shutter | Yes |
| Internal Color Filter Wheel | No |
| Camera Body Configuration | Medium Enclosure |
| Dimensions | W4.45'' x H4.45'' x D2.00'' (add 0.225¨ for T-Mount) |
| Weight, without Nosepiece | 34 oz. / 950g |
| Optical Back Focus | 0.90'' w/ T-mount adapter |
| (w/o Filters in path) | 0.68'' w/ C-mount adapter |
| 0.68'' w/ no adapter | |
| Thermoelectric CCD Cooling | Temperature regulation +/- 0.1°C, @ 0°C to -40°C CCD temperature |
| In free air, Fans @ Full Speed | Typically 45°C below ambient air temperature with 85% cooling power |
| With Opt Liquid Cooling – Fans Off | Typically 52°C below circulating liquid with 85% cooling power |
| (adds 0.75'' to camera depth) | |
| Cooling Fan Control | Intelligent, user configurable |
| Read Rate | User Selectable High Quality mode at 800KHz, High Speed mode at 8MHz |
| Camera Gain | User Selectable High Gain 0.5 e-/ADU (default), Low Gain 1.1 e-/ADU |
| Digital Resolution | 16 bits (both High Quality and High Speed mode) |
| Total System Read Noise | Typically <8 electrons RMS (CCD specification limited) in High Quality mode |
| Typically <16 electrons RMS (CCD specification limited) in High Speed mode | |
| Pixel Dark Current | <0.1 electron per second at 0°C |
| Full Image Read and Download Time | Typically <12 second (host computer dependent) in High Quality Mode (800KHz) |
| Typically ~1 second (host computer dependent) in High Speed Mode (8MHz) | |
| Image download times will be reduced with binning and/or subframe (ROI) | |
| Binning Modes | Symmetrical and Asymmetrical binning up to 9 pixels horizonally or vertically |
| Status and Notification | User configurable multi-color LED status indicator and multifunction |
| audible beeper. Over-temperature and high/low voltage alarms. | |
| Power Consumption | 12v, 2A (24 watts) at max cooling, max fans and filter moving |
| (25 AC watts max with included 90-240V AC power supply) | |
| Operating Environment | Temperature: -20°C to 30°C, Humidity: 10% to 90% non-condensing |
| Computer Connectivity | USB 2.0 High Speed (USB 1.1 compatible) |
| Other Ports | Optically isolated 4 channel control port for telescope guiding |
| or input/output shutter trigger (See API Reference Manual for details) | |
| T Mounting Adapter | Standard – T-Thread, 42mm x .75mm pitch |
| C Mounting Adapter (1'' x 32TPI)(Not recommeded for 540i) | Optional, C-Mount (Type II) lens focus compatible (17.5mm backfocus) |
| Nosepiece | Standard, T-Adapter to 2'' nosepiece |
| Optional, T-Adapter to 1.25'' nosepiece |
