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Veleta - 4 MPixel side-mount TEM camera
Key features
Veleta
  • Up to 2048 x 2048 pixels
  • More than 10 fps @ binning 2
  • Peltier-cooled
  • Lens-optically coupled
  • 14 bit
  • No water cooling or external shutters necessary
  • Uses only a single port
Summary
Veleta is a side-mounted TEM camera offering a peltier-cooled CCD chip with 2k x 2k pixels and a dynamic range of 14 bits. The new camera fits perfectly into our product line of sophisticated, side-mounted TEM cameras with the successful and highly recommended MegaView. Veleta reflects current life science, bio-medicine, materials science and industrial requirements. And this new camera works perfectly in conjunction with the new tomography software, iTEM Solution Tomography.
Description Specifications
The Veleta is a side-mounted, high-resolution TEM camera. This lens-coupled camera is ideal for life science, bio-medical, or other applications where a large field of view is important. The Veleta offers a 4 megapixel image (2048 x 2048) at 14-bit grayscale. The camera is sensitive enough to supply images at 5fps at full resolution or up to 20fps at 4x binning.
The side mounted Veleta is attached on the 35mm camera port on the column. The camera is pneumatically inserted into the column so only one port is required to attach the camera to the microscope. The Veleta has peltier cooling so external connections are not necessary, eliminating the possibility of leaks and corrosion. All data is transferred by FireWireTM to the PC. The high-resolution capabilities of the camera make it ideal for applications like pathology and tomography. The iTEM imaging platform allows total control of the camera and integration into the microscope system allowing for smooth, user-friendly operation.
CCD Chip
The highly sensitive interline CCD image sensor used in the Veleta provides a resolution of 2048 x 2048 pixels at 14-bit dynamic range. The pixel size of the CCD chip is 7.4 x 7.4 μm (effectively 13.1 x 13.1 μm).
Binning
Several binning modes are supported by Veleta. The user can select between modes of 2x, 4x and 8x binning. This means sensitivity can be increased even more.
High frame rates
The Veleta supports frame rates up to 20 images per second at binning 4 and of 5 images per second at full resolution. This high frame rate is ideal for locating suitable sample segments directly onscreen.
CCD Cooling
Noise is generally introduced if the CCD chip is not cooled to a sufficiently low tem-perature, known as “dark current”. This thermal noise is not a problem with the Veleta due to a sophisticated Peltier-cooling system which regulates the temperature of the CCD chip at 10° C (@ 25° C ambient temperature).
Variable exposure times
The Veleta offers exposure times ranging from 100 μs to 160 s. This is a fundamental prerequisite for being able to acquire images of either intense illumination or of very low intensity.
Optimized scintillators
The Veleta uses a dedicated high-sensitivity phosphor scintillator. In order to match customers’ individual demands, various scintillators can be customized for several accelerating voltages and applications.
Anti-Blooming / Diffraction
The CCD chip architecture guarantees high anti-blooming. Individual pixels are clearly distinguished. In conjunction with the extremely short exposure times, this optimizes the acquisition of diffraction images.
Housing
Installing the Veleta is simple and straightforward. No additional water cooling and no other modifications at the TEM are necessary to set up the camera system. X-ray safety is guaranteed by the camera housing for up to 200 KeV.
Real-time functions
Integration of the Veleta with iTEM, Olympus Soft Imaging Solutions TEM imaging platform, ensures Real-Time shading correction, intensity histograms, auto contrast adjustment and Real-Time Fast Fourier Transformations during image acquisition.
Integration
Furthermore, the integration of the camera with iTEM provides professional functions such as autofocus, labeling, processing, archiving, analyzing and report generation. Photographic quality printouts can be obtained virtually seconds after acquisition – without the darkroom.
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