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Topic: CCD


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In the News (Tue 18 Jun 19)

  
  Charge-coupled device - Wikipedia, the free encyclopedia
CCDs are used in digital photography and astronomy (particularly in photometry, optical and UV spectroscopy and high speed techniques such as lucky imaging).
CCDs are typically sensitive to infrared light, which allows infrared photography, night-vision devices, and zero lux (or near zero lux) video-recording/photography.
CCD cameras used in astronomy often require very sturdy mounts such as a Losmandy or Astrophysics mount to cope with various vibrations and breezes that can occur, along with the tremendous weight that most imaging platforms inherently cause.
en.wikipedia.org /wiki/Charge-coupled_device   (923 words)

  
 Catalina Conservancy Divers
CCD was formed in 1991 with the goal of assisting the Conservancy in achieving its mission with respect to Catalina's marine environment.
The mission of CCD is to document, study and conserve the complex marine environment that surrounds Catalina.
CCD has a Scientific Advisory Board composed of a group of marine science experts that provide guidance to the organization's research projects, and use data collected by research divers to analyze and monitor the underwater environment at Catalina.
www.ccd.org   (216 words)

  
 Canadian Coalition for Democracies - Home
CCD will work to assure that our natural democratic allies - both nations and peoples - are supported and that their enemies receive neither encouragement nor aid from Canada.
CCD monitors the foreign policy actions and inactions of the Canadian government and taxpayer-funded agencies, and shines a light on how each act and omission helps or hurts the cause of democracy.
CCD is published frequently in national newspapers and has regular press releases, radio and television interviews, letters to the editor, face-to-face meetings with politicians, international alliances with pro-democracy groups, petitions, and other means of moving toward an ethical foreign policy.
www.canadiancoalition.com   (653 words)

  
 KODAK: Technical Overview: CCD Technology
In its most elementary form, the CCD sensor is like the camera's "electronic eye"—collecting light and converting it to charge, and subsequently emitting the signal that results in a digital image.
Kodak's patented CCD sensors are comprised of thousands of pixels grouped in either a linear or matrix array to register the overall light intensity of each point in a scene.
In a full-frame CCD, the exposure is controlled by a mechanical shutter or strobe to preserve scene integrity, because a parallel register is used for both scene detection and readout.
www.kodak.com /global/en/service/professional/tib/tib4131.jhtml   (983 words)

  
 index
CCD has been involved in the design of drivers' cabs and passenger saloons, station operations rooms, disabled accessibility guides, passenger help points, CCTV systems and network control centres.
CCD have been in the forefront of communications centre design for the last 20 years.
CCD is an ergonomics and design consultancy operating in the areas of control and communications centre design, the rail and air industries and providing health and safety services.
www.ccd.org.uk   (234 words)

  
 CCD 42, LOCKLAND 15   (Site not responding. Last check: 2007-10-21)
CCD moved to 5-0 in the MVC with the victory; Lockland fell to 4-1.
CCD took a 20-7 halftime lead with the use of a balanced offense.
CCD threatened on the ensuing drive, but Smith fumbled near the goal line and Lockland's Gerald Gertz recovered in the end zone.
www.enquirer.com /editions/1998/10/24/ccd.html   (523 words)

  
 ccd(4) - Concatenated Disk driver
CCD has an option for a parity disk, but does not currently implement it.
For example, if you have a ccd configuration specifying four disks, the first two disks will be mirrored with the second two disks.
ccd and one of the disks fail, you cannot mount and use the remaining partition as itself; you have to configure it as a one-disk
www.gsp.com /cgi-bin/man.cgi?section=4&topic=ccd   (735 words)

  
 Meade Instruments Corporation - Pictor Series CCD Autoguider/Imagers
CCD sensors are made of semiconducting materials such as silicon that have been manufactured to be sensitive to the impact of light hitting their surfaces.
In the simplest format, the CCD head, containing the CCD chip itself, is placed into the telescope's eyepiece-holder in place of an eyepiece; the object to be imaged is centered and focused on the CCD chip; the image is taken, and the image data are transferred and processed by the PC.
Use of the CCD Autoguider has several advantages over the manual method; in general it is much more precise and error-free than is possible with manual guiding, and, in the case of the Meade Pictor 201XT, the autoguider can guide on guidestars as faint as 12th-magnitude, far fainter than is possible during manual guiding.
www.meade.com /catalog/pictor   (4130 words)

  
 About CCD   (Site not responding. Last check: 2007-10-21)
CCD is one of 13 community and junior colleges in the Colorado Community College System, governed by the State Board for Community Colleges and Occupational Education, and accredited by The Higher Learning Commission of the North Central Association of Colleges and Schools.
CCD offers two-year, associate degrees and certificates in more than 125 areas, and it guarantees transfer of general education core curriculum to any Colorado public four-year college or university for completion of a baccalaureate degree.
CCD does not discriminate on the basis of race, color, creed, national origin, sex, sexual orientation, age or disability in admission or access to, or treatment or employment in its educational programs or activities.
ccd.rightchoice.org /About_CCD   (1714 words)

  
 charge-coupled device - a Whatis.com definition - see also: CCD
A charge-coupled device (CCD) is a light-sensitive integrated circuit that stores and displays the data for an image in such a way that each pixel (picture element) in the image is converted into an electical charge the intensity of which is related to a color in the color spectrum.
A CCD in a digital camera improves resolution compared with older technologies.� Some digital cameras produce images having more than one million pixels, yet sell for under $1,000.
The CCD was invented in 1969 at Bell Labs, now part of Lucent Technologies, by George Smith and Willard Boyle.
searchstorage.techtarget.com /sDefinition/0,,sid5_gci295633,00.html   (290 words)

  
 Regulus! CCD Imaging FAQ
This is a measure of the CCD chip's sensitivity to the various wavelengths of light in the spectrum.
For those wishing to use monochrome CCD's to take color images there are a variety of filter wheels and sliders available that allow one to image through clear, red, green, and blue filters for later combination into a color image (tricolor).
Other CCD makers are using various techniques to allow the imaging chip to guide the telescope while imaging at the same time.
www.regulusastro.com /regulus/papers/ccdfaq   (5538 words)

  
 CCD vs. CMOS
CCDs and CMOS imagers were both invented in the late 1960s and 1970s (DALSA founder and CEO Dr. Savvas Chamberlain was a pioneer in developing both technologies).
CCDs have traditionally provided the performance benchmarks in the photographic, scientific, and industrial applications that demand the highest image quality (as measured in quantum efficiency and noise) at the expense of system size.
CCD fabrication processes also tend to be more mature and optimized; in general, it will cost less (in both design and fabrication) to yield a CCD than a CMOS imager for a specific high-performance application.
www.dalsa.com /markets/ccd_vs_cmos.asp   (1174 words)

  
 Sony announce new RGBE CCD: Digital Photography Review
By this technology, the color reproduction error is halved compared to Sony's conventional 3-primary-color filter CCD and, expression of images closer to the natural sight perception of the human eye is achieved under various shooting conditions.
Conventional digital still cameras mainly use 3-primary-color filter CCD, and the colors are recorded by the intensity of each of the 3 colors, Red(R), Green(G) and Blue(B), corresponding to the color reproduction characteristics of the color TV or monitors.
In the 4-color filter CCD, a filter with the Emerald (E) color is added to the conventional 3-color RGB filter, in order to reduce the color reproduction errors and to record natural images closer to the natural sight perception of the human eye.
www.dpreview.com /news/0307/03071601sonyrgbeccd.asp   (634 words)

  
 CCD Basics   (Site not responding. Last check: 2007-10-21)
The CCD photosites accomplish their task of sensing incoming light through the photoelectric effect, which is a characterization of the action of certain materials to release an electron when hit with a photon of light.
Astronomical CCD cameras also can make color images, but these are made by post-exposure processing and merging of three separate exposures of an object made through red, green, and blue filters.
This exposure must be the same duration as the light frame and be made with the CCD at the same temperature as during the light frame so that electrons generated during the dark frame replicate the heat-generated electrons present in the light frame.
www.ghg.net /akelly/ccdbasic.htm   (566 words)

  
 CCD Charter
The purpose of the CCD is to provide leadership to the Cornell community on information technology issues through advice, education, and advocacy.
Identify CCD members to serve on university committees, task forces, and search committees to represent the viewpoints of the CCD.
CCD membership will include one or more representatives from each college or significant unit who are responsible for directing the organization's IT function.
www.ccd.cornell.edu   (458 words)

  
 Coig Change Directory v0.803a
CCD can be used with arguments from the command line or by using its user-friendly graphical interface, where you can navigate through the directory tree with the cursor keys.
CCD includes almost every option NCD had (a few ones are still to be implemented) and implements a lot of new and powerful features.
CCD saves the directory trees to your hard disk, so the whole directory tree does not need to be rescaned each time you execute CCD.
www.terra.es /personal/josecoig   (755 words)

  
 The art of CCD imaging
My telescope and CCD combination has pixels that are about 4 arcseconds on the sky - that's too large for my liking but that is all I had available at the time.
The problem is exacerbated with colour work as the CCD chip is far less sensitive in the blue than the red, thus requiring different exposures for each colour.
I had the telescope and CCD camera in pieces that day doing some maintenance and they were not back together and aligned until too late to take twilight flats.
www.aao.gov.au /local/www/sl/sl-iproc.html   (5840 words)

  
 New honeycomb "Super CCD" from FujiFilm: Digital Photography Review   (Site not responding. Last check: 2007-10-21)
Any further increase in the number of pixels on a conventional CCD is known to adversely affect sensitivity and the dynamic range, as well as the S/N ratio, since the size of each pixel must of necessity be smaller.
The area of the photodiode in a 1/2-inch Super CCD with two million pixels is about 1.6 times as large as the area offered in a conventional CCD with two million pixels (2.3 times as large in the case of a three million pixel CCD).
Unlike the conventional CCD with progressive scanning capabilities that require a complex structure, the structurally simpler Super CCD can easily be adapted to function as a digital camera equipped only with an electronic shutter.
www.dpreview.com /news/9910/99102003superccd.asp   (1172 words)

  
 Cleaning CCDs by Thom Hogan
Trying to “rub” the filter clean (you tend to just move the dust around--once it is on the lint-free cloth, it can migrate back to the CCD if you use improper technique, such as not enough fluid, or rubbing motions; moreover, if you "rub" a really hard particle across the filter you can scratch it).
That's not to scare you into thinking that if you leave your CCD exposed for five minutes that it'll produce poor color next time you use it; just that light accumulation to dye inks really should be minimized.
At f/1.8, the multiple angles at which light is hitting the CCD and the shallow depth of field work in your favor.
www.bythom.com /cleaning.htm   (2583 words)

  
 Ccd   (Site not responding. Last check: 2007-10-21)
Sony supplies CCDs for many other major manufacturers who have already issued announcements about their cameras, but despite the date on this notice, it has only come to light today.
These highly sensitive CCDs on board the NASA Deep Impact spacecraft were used to capture all of the the visible imagery from the mission's probe into the comet Tempel 1.
CCDs with 1.33 gross megapixels, 1.23 effective pixels for still and 691K effective pixels for video.
www.boarc.com /ccd.html   (1038 words)

  
 Howstuffworks "How Digital Cameras Work"
A CCD transports the charge across the chip and reads it at one corner of the array.
CCDs, on the other hand, use a process that consumes lots of power.
CCD sensors have been mass produced for a longer period of time, so they are more mature.
electronics.howstuffworks.com /digital-camera2.htm   (409 words)

  
 CCDs for Material Scientists
For high and stable QE the backside of the CCD must be negatively charged to drive signal electrons towards the front surface.
Now CCDS are designed so that the signal carrying channel is constricted at the end of beginning of the transfer gate as opposed to mid-phase.
Note that if 1/f noise were not present, white noise could go to zero just by increasing the electrical bandwidth of the CCD signal processor and increasing the sampling period for each pixel.
zebu.uoregon.edu /ccd.html   (1733 words)

  
 CCD Cleaning
Once the CCD is clean, I let the shutter close and reset the exposure mode to A. then take a photo of a wall, without a lens attached, and check my results.
I had two more days of shooting so I either had to commit the biggest no no of CCD cleaning and touch the CCD or not shoot (I was in the Yukon Territory with the nearest town being Fairbanks AK which was eight hours away!).
It was a nightmare and took over an hour to get the CCD first cleaned of the melted snowflakes and then remove all the fibers left by the Q-Tips.
www.nikondigital.org /articles/ccd_cleaning.htm   (796 words)

  
 Fujifilm Press Center - News: Corporate - FUJI PHOTO FILM U.S.A., INC. ANNOUNCES FOURTH-GENERATION SUPER CCD TECHNOLOGY
The newly developed, fourth-generation Super CCD SR achieves a dynamic range approximately four times greater than its predecessor, and which produces a smooth and wide tonal range without losing detail in dark areas or washing out in bright areas.
By combining data from both sensor elements according to the composition of the scene, the Super CCD SR is able to deliver both high sensitivity and expanded dynamic range.
A subsequent generation of Super CCD technology was developed in 2001, offering an increase in the number of pixels and reduction in noise to achieve sharper image quality.
www.fujifilm.com /JSP/fuji/epartners/PRNewsDetail.jsp?DBID=NEWS_547115   (1064 words)

  
 What's a CCD bakeout, anyway?
The EIT CCD (above) is similar to the frontside CCD's handheld video cameras, but with better read noise (the "snow" or "fuzz" you see in your home videos when there's little available light) and, thanks to the backside-thinning, it's sensitive to extreme ultraviolet (EUV) light.
According to the best thermal models available, this raised the temperature of the EIT CCD to over +35 C. Tests after the recovery of the spacecraft in 1998 September showed that not only had the CCD regained much of its lost sensitivity (~ 60%), but the "slush" appeared to have gone away --- for good.
The CCD experts on the EIT team suspect that the slush began to escape when the rear thin aluminum filter peeled slightly from its frame in 1998 February.
umbra.nascom.nasa.gov /eit/CCD_bakeout.html   (692 words)

  
 Christian Care Foundation: for Children with Disabilities in Thailand
CCD's prime objective is to provide care and support to abandoned children and young adults in professional learning and development environments.
CCD welcomes international and local volunteers (both professional and non-professional) to work alongside CCD staff in providing disabled children and young people with the opportunity to develop their physical, mental and social skills.
There are many different ways that you can help CCD provide love and support to abandoned children with disabilities and special needs in Thailand.
www.ccdthailand.org   (167 words)

  
 CCD - SRI Instruments
Because the CCD requires no compressed gases like hydrogen or helium, it can be used in SRI's Gas-less GCs where our built-in, "whisper quiet" air compressor supplies the ambient air carrier gas.
The CCD detector can also be used as a hydrocarbon monitor in non-chromatographic applications where the CCD senses the total hydrocarbon content of a flowing air stream, or as a hydrogen/hydrocarbon leak detector.
The CCD is maintained in an oxidative environment by using air carrier gas.
www.srigc.com /2003catalog/cat-39.htm   (311 words)

  
 Amateur CCD Astronomy
The CCD affords amazing views of the night sky even for amateur astronomers with modest telescopes living in large light-polluted metropolitan areas.
The CCD also permits precise astrometry, spectroscopy, photometry, and other types of scientific research for even amateur astronomers.
Of course, the CCD can be used to obtain beautiful and interesting astrophotography.
www.azastronomy.com   (162 words)

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