Apogee Ascent CCD Camera and Integrated CFW31-8R Color Filter Wheel
The Apogee Ascent CCD Camera is the latest imaging technology from Apogee Imaging Systems. Many of the features are built on the highly successful Alta series. Ascent is the perfect choice for applications requiring high speed, low cost and a compact enclosure. Let's take a look at just some of the benefits of choosing the Apogee Ascent CCD Camera...
The Ascent is designed for a maximum temperature delta of 30C below ambient for the smaller/mid format CCDs. By using forced air, cooling to 40C below ambient is achievable. The Ascent has minimal (<10C) heat rise on the enclosure during full cooling. For OEMs, Thermal coupling the Ascent housing to a heat dissipating structure within a larger will also serve as a cooling enhancement.
The Integrated CFW31-8R Filter Wheel provides a fast compact filtering solution for the Apogee Ascent A2050 CCD Camera. The wheel provides 8 positions for 31mm round, unmounted filters. It cannot be removed by user.
The Ascent maintains compatibility with the Apogee SDK used for Alta and previous models. Applications written for Alta are compatible with Ascent
Progressive Scan and Continuous Imaging Modes
Interline transfer CCDs first shift charge from the photodiode in each pixel to the masked storage diode, and then march the charge through the storage diodes to the serial register. Acquisition of a new image in the photodiodes during readout of the previous image is called “progressive scan.” Alta and Ascent cameras both support progressive scan with interline CCDs.
Image sequences of up to 65535 images can be acquired and transferred to camera / computer memory automatically. A delay may be programmed between images from 327 microseconds to 21.43 seconds. (This does not mean you can acquire images every 327 microseconds; it means you can program a delay of 327 microseconds between the end of a readout and the start of the next exposure.)
The Alta and Ascent platforms allow for three types of image sequencing:
- Application-Driven Sequencing: This is the most common form of image sequencing. The application merely takes a specified number of successive images. This type of sequencing is suitable when the time between image acquisitions is not short and where slight differences in timing from image to image are not important.
- Precision back to back sequencing Altas and Ascents incorporate a firmware controlled back to back image sequencing mode suitable for image-image intervals from 327uS to a maximum of 21.43 seconds in 327uS intervals. This provides for precision spacing of images in a sequence where windows applications cannot respond.
- Fast back to back sequencing (Ratio Imaging - Interlines only) This is a special form of precision back to back sequencing designed for a fixed <1 microsecond spacing between a pair of interline CCD exposures. The caveat with this mode is that the exposure times for each image must be greater than the readout time for the image. For example, if using the Ascent A2000 camera, the readout time for a full frame is less than 0.2 seconds so your exposure would need to be at least 0.2 seconds.
Apogee Ascent cameras are designed for demanding scientific applications. High sensitivity sensors detect very weak signals that cannot be seen by the human eye or standard CCD cameras. The direct USB 2.0 link between camera and computer allows easy installation, portability and fast data transfer rate. High resolution enables detection of very fine detail across a wide field of view. The 6.8 - 7.4 micron pixels in some of these cameras are the ideal balance between optical sampling and dynamic range for microscopy. Used with the optional CRI liquid crystal tunable filters, the cameras acquire stunning publication quality color images. All cameras come with their own easy to use software. An ActiveX software development kit and Linux drivers are available for easy integration into custom applications.
There are many technological jumps designed into the Ascents. But other aspects of the technology represent refinement upon refinement over more than a decade. Our cooling technology, for example, is advanced, not just because of what it is, but because of what it isn't. We've made mistakes--and survived to apply the lessons learned to improving the product and the company as a whole. We continue to refine not just our electronics and our mechanical designs, but also our procedures, our documentation, our customer recordkeeping. It's quite an accomplishment to manufacture and sell thousands and thousands of cameras, but unless they are robust, the result is a customer service nightmare. In our effort to improve our process, we've achieved the following benchmarks: FCC compliance, CE compliance, ROHS compliance and ISO-9000 compliance (in process).
Apogee Ascent CCD Camera Features...
- Integrated CFW31-8R Filter Wheel
- USB2.0 High Speed Serial Interface
- Interline CCDs from 0.3 to 16 megapixels
- Compact Thin Lightweight Enclosure - 20 oz, 1.2" thick with 0.320 BFD
- Cooling up to 40C below ambient with liquid or fan assist, 30C without.
- Hermetically sealed and argon filled CCD chamber with lifetime warranty.
- SDRAM in camera head for local image storage and fast sequences
- 16 bit digitization at up to 12 Mpixels/second
- Single +6V supply
- Advanced triggering, Ext. Shutter and Readout controls
- Programmable status indicator LEDs
- Binning to 4095 Vertical x 8 Horizontal, independently selectable
- <1uS separation between back-to-back images
- No external control units or plug-in cards
- Field upgradeable firmware
- Progressive Scan and Continuous Imaging modes
- Compatibility with Alta software drivers
- Supported by all software currently supporting Alta and additional applications
- Attachable filter wheel accessory and flexible peripheral mounting options.
- Compatible with Apogee FW50 filter wheels
- 2 year warranty on camera, lifetime warranty on CCD chamber seal
Ascent 4050 CCD Camera with KAI-4050 Monochrome Interline Transfer Sensor
The Ascent A4050 has a 4.2-megapixel interline transfer sensor with high quantum efficiency. The camera is available with a monochrome sensor (M version) or color sensor with a Bayer mosaic. Low noise and small pixels are ideal for OEM applications, biological sciences, and fundus imaging.
- 2048 x 2048 array, 5.5 x 5.5 micron pixels
- 32 Mbyte SDRAM image buffer
- Programmable 16-bit digitization speeds up to 12 Mpixels/sec
- USB 2.0 interface: no plug in cards or external controllers
- Programmable, intelligent cooling to 40°C below ambient
- Binning up to 8 Horizontal x 1024 Vertical
- Subarray readout and fast sequencing modes
- Programmable offset and gain
- External triggering and strobe controls
- ActiveX drivers included with every system
- Field upgradeable firmware
- Fused silica window
- Optional C-mount, Nikon F-mount, or 2" slip fit adapter
- Optional 6-position filter wheel for 1" / 1.25" / 31mm filters
- Single 6V supply
- Compact enclosure: 20 oz. (0.57 kg)
- Programmable status indicators
About the Kodak KAI-4050 Sensor...
The KODAK KAI-04050 Image Sensor is a 4-megapixel CCD in a 1” (16 mm diagonal) optical format. Based on the KODAK TRUESENSE 5.5 micron Interline Transfer CCD Platform, the sensor features broad dynamic range, excellent imaging performance, and a flexible readout architecture that enables use of 1, 2, or 4 outputs. The sensor supports full resolution readout up to 32 frames per second, while a Region of Interest (ROI) mode enables partial readout of the sensor at even higher frame rates. A vertical overflow drain structure suppresses image blooming and enables electronic shuttering for precise exposure control. Other features include low dark current, negligible lag, and low smear.
The sensor shares common pin-out and electrical configurations with other devices based on the KODAK TRUESENSE 5.5 micron Interline Transfer CCD Platform, allowing a single camera design to support multiple members of this sensor family.
Kodak KAI-4050 Sensor Features...
- Color or Monochrome configurations
- Progressive Scan Readout
- Flexible Readout Architecture
- High Frame Rate
- High Sensitivity
- Low Noise Architecture
- Excellent Smear Performance
- Package Pin Reserved for Device Identification
Ascent® Camera Series
The Ascent Camera Series supports a variety of interline transfer sensors with high quantum efficiency and low dark current. Most cameras are available with a choice of monochrome sensor or color sensor with a Bayer mosaic. Low noise and small pixels are ideal for OEM applications, astrophotography, biological sciences, guiding / adaptive optics, and other high frame rate applications.
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