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KL400 FI Sensor Specs | |
Sensor: | GPixel GSense400 |
Pixels: | 2048 x 2048 |
Pixel Size: | 11 μm |
Full Well Capacity: | 120000 e- |
Dynamic Range: | 96 dB HDR |
Sensor Diagonal: | 31.9 |
Video Size (inch): | 2.0 |
Color Options: | Monochrome |
Sensor Type: | Front Illuminated |
Shutter Type: | Rolling |
Sensor Grades: | Grade 1 |
KL400 FI Performance
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Digitization Speed: | 24 fps HDR |
Typical System Noise: | 1.5 e- HDR |
Typical Maximum Cooling: | 45ºC Below Ambient |
Typical Dark Current: | |
Typical Non linearity: | <1% |
Lens Mounts: | Optional Nikon F-Mount or Canon EOS mount |
Available Shutters: | Optional 45 mm |
Housing Dimensions: | 4.0 x 4.0 x 4.17 (101.6 x 101.6 x 105.9) |
Focal Plane to Faceplate: | 15.53 mm (optical; no cover slip) |
Weight: | 3.0 lbs. |
Interface: | USB 3.0 |
All Kepler Cameras | |
Temperature Stability: | 0.1ºC |
Remote Triggering: | Standard |
Shutter MTBF: | 1,000,000 |
Power: | 12V (100-240V AC to 12V DC power supply included). With TEC off: |
Environment: | -30ºC - 45ºC | 10% - 90% Relative Humidity |
The KL400's Low Dynamic Range (LDR) mode reads the image once and digitizes it to 12-bits. The user has eight gains to select from in LDR mode. Adjusting the gain affects full well size, dark current growth, and linearity.
The High Dynamic Range (HDR) mode reads the pixels twice, digitizing with different gains. (Unlike CCDs that only read the charge from each pixel once, CMOS sensors can measure the charge multiple times.) The two images are merged to create a 16 bit image with the linearity of a single image, thus allowing an HDR image to show detail in both low-count and high-count areas of an image. Because of the additional read time, the maximum HDR frame rate is half that of the LDR mode.
The Kepler camera also features a Low Dark Current (LDC) options for both LDR and HDR. When used, the LDC option minimizes dark current at the expense of reduced full well capacity. For short exposures where dark current growth is not a problem, LDC is not generally used. Standard modes (not LDC) provide the highest full well capacity and widest dynamic range. On the other hand LDC mode is very useful for imaging dim objects that require very long exposures where dark current growth can be significant.