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The
ORCA II Dual Scan Cooled CCD Camera is newly
designed to combine high resolution, low noise, and high sensitivity with
readout versatility. In addition, various pixel formats are attainable
by adjusting binning or sub-array functions to achieve even faster frame
rates.
The ORCA II incorporates a CCD with an effective 1280 x 1024 pixel array and progressive scan interline design to eliminate the need for a mechanical shutter. This permits high resolution and high speed measurement without the vibration often seen when using a mechanical shutter. The combination of Hamamatu's unique hermetic vacuum sealing, and peltier cooling, with air radiation, enables the CCD chip to operate at -40 to -50°C. This suite of features drastically reduces the dark current of the CCD chip, making the camera the ideal choice for high sensitivity scientific measurements that require long exposure times.
| Applications
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| ORCA II Quantum Efficiency Curve |
ORCA II Camera Specification |
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Frame rate with binning (frames/sec) |
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Scan mode |
No
binning |
2
x 2 |
4
x 4 |
8
x 8 |
| Fast scan mode | 5.3 |
10.1 |
17.8 |
28.8 |
| High precision scan mode | 0.8 |
1.6 |
3.0 |
5.2 |
Frame rate with sub-array (frames/sec) |
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Number of lines (no binning) |
48 lines |
96 lines |
200 lines |
496 lines |
| Fast scan mode | 46.3 |
33.7 |
21.4 |
10.3 |
| High precision scan mode | 9.8 |
6.4 |
3.7 |
1.6 |
CCD Imager |
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| Pickup device | Progressive scan interline CCD | |||
| Effective number of pixels | 1280 (H) x 1024 (V) | |||
| Cell size | 6.7mm x 6.7mm (square format) | |||
| Effective size | 8.58mm x 6.86mm (2/3 inch format) | |||
| Features | Vertical overflow drain structure, anti-blooming function | |||
Camera |
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| Readout noise | High scan mode: 10 electron r.m.s. typ. | |||
| High precision mode: 3 to 5 electron r.m.s. typ | ||||
| Cooling method | Peltier cooling, air radiation system | |||
| Mean dark current | 0.001 electrons/pix/sec | |||
| Lens mount | C mount | |||
Digital Output |
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| Type | RS-422A Digital Output | |||
| Synchronization method | Internal/External | |||
| Gamma | 1 | |||
| Dynamic Range | High scan mode: 1800 to 1 | |||
| High precision mode: 6000 to 1 (10,000:1 with binning) | ||||
| Clock Rate | High scan mode: 10MHz | |||
| High precision mode: 1.25 MHz | ||||
| Frame Rate | High scan mode: 5.3Hz | |||
| High precision mode: 0.8 Hz | ||||
Size and Weight |
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| Camera head | 120mm x 114mm x 239mm, approx. 2.5Kg | |||
| Control unit | 412mm x 74mm x 383mm, approx. 8.5Kg | |||