Description
Features:
Features for the Photometrics Cool SNAP K4:
- 20-MHz readout: High-speed, high-sensitivity image capture
- 2048 x 2048 imaging array: Resolves fine detail
- 7.4 x 7.4-ìm pixels: Ideally matched to optical microscope
- Interline-transfer, progressive-scan CCD: Eliminates camera vibration and facilitates fast triggering
- Flexible binning and readout: Increases light sensitivity while increasing the frame rate
- 12-bit digitization: Quantifies bright and dim signals in the same image
- Thermoelectric cooling: Long integration times for higher sensitivity
- Enhanced quantum efficiency: Provides higher sensitivity than typical interline cameras
- C-mount: Easily attaches to microscopes, standard lenses, or optical equipment
- Acquisition software: Captures, analyzes, and saves high-resolution images
- PCI interface: High-bandwidth, uninterrupted data transfer
- PVCam, Circular buffers, Device sequencing: Supported by numerous third-party software packages, Real-time focus, Precise integration with shutters, filter wheels, etc. (Compatible with Windows XP/Vista 32, Mac OS X, and Linux (kernel versions 2.4 and 2.6.8))
- CCD image sensor: Kodak KAI-4020M; interline-transfer, progressive-scan device with microlenses
- CCD format: 2048 x 2048 imaging array, 7.4 x 7.4-um pixels, 15.16 x 15.16-mm imaging area (optically centered)
- Linear full well: 30,000 e- (single pixel); 60,000 e- (2 x 2 binned pixel)
- Read noise: ≤10 e- rms @ 20 MHz
- Nonlinearity: <1%
- Digitizer type: 12 bits @ 20 MHz
- CCD temperature: -25ͦC (regulated)
- Dark current : 0.1 e-/p/s @ -25ͦC
- Operating environment: 0 to 30ͦC ambient, 0 to 80% relative humidity noncondensing
- I/O TTL (trigger/status): trigger, invert, inhibit, exposing, interline shift, frame readout, 8-bit TTL (programmable), 8-bit DACs(two)
Compare this against “Features of Gel Doc XRS+ system”:
- Chemiluminescence: Yes
- Fluorescence: Yes
- Colorimetry/densitometry: Yes
- Gel documentation: Yes
Hardware Specifications
- Maximum sample size: 28 x 36 cm
- Maximum image area: 26X 35 cm
- Excitation source: Trans-UV and epi-white are standard (302 nm included, with 254 and 365 nm available as options)
- Illumination control: 3 modes (trans-UV, trans white, epi-white)
- Detector: super cooled CCD
- Image resolution: 4 megapixels
- Pixel size (H x V): 6.45 x 6.45 µm
- Filter holder: 3 positions (2 for filters, 1 without filter)
- Emission filters: 1 included (standard), 3 optional
- Dynamic range: >4.0 orders of magnitude
- Pixel density (gray levels): 65,535
- Dynamic flat fielding: Application specific, for all applications
- Instrument size (L x W x H): 36 x 60 x 96 cm
- Instrument weight: 32 kg
Operating Ranges
- Operating voltage: 110/115/230 V AC nominal
- Operating temperature: 10–28°C (21°C recommended)
- Operating humidity: <70% noncondensing
Automation Capabilities
- Workflow automated selection: Application driven; user selected or recalled by a protocol
- Workflow automated execution: Controlled by a protocol via application specific setup for image area, illumination source, filter, analysis, and reporting
- Workflow reproducibility: 100% repeatability via recallable protocols; from image capture to quantitative analysis and reports
- Autofocus: Precalibrated focus for any zoom setting or sample height
- Image flat fielding: Dynamic; precalibrated and optimized per application
- Autoexposure: 2 user-defined modes (intense or faint bands)
