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)
