|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
CCD charge transfer
On Wednesday, June 1, 2016 at 12:00:54 AM UTC-4, wrote=
[[Mod. note -- 41 excessively-quoted lines snipped here. -- jt]] I'm trying to account (in theory) for a source of evanescent waves (fringes) across the pixel array, with frequencies quantized as nu_n =3D n(nu_o), where n is integer quantum mode n=3D(NdP_n/h), N is array dim in unit pixels, d is pixel dim. P_n =3D (h/Nd)n is momentum, h is Planck's constant, nu_o is detector fundamental frequency nu_o =3D (c/d)/N and c is light velocity in vacuum. What could "diffract" during charge xfer/readout? Thanks again, mark jonathan horn Not sure if the answer will make sense as the terminology used could sound unfamiliar. For this reason a video of a CCD I.C. Photon sensor cell information is transferred off the array by an analog bucket brigade. The reason for this is an A/D converted for every cell is too costly therefore all cell for a X line are read by one A/D converted for voltage to brightness. The important point is the data is always clocked out in the same direction. If your diffraction is always to the right or left of source then you have your answer. It happened in the bucket brigade transfer. On the other hand if it is a X + and - and Y + an - transfer then a cell to cell should be the focus of attention. There is a third viable that should be considered. CCDs are noisy therefore software logarithms are applied to average out noise. The [[Mod. note -- I speculate that the word "logarithms" in the above line might be a typo for "algorithms". -- jt]] jest of it is a 9 pixel block negative cross parity check. That is a month full but it boils down to all 9 pixels should have a similar brightness has it is on the limits of focus. If one or two of the pixels in this block are different then they are considered to be the result of random noise therefore replaced by an average data of neighboring cells. Make sure your camera is in "raw mode" without noise correction software. This could make the diffraction you are looking for clearer. Good luck with chasing down your diffraction. https://www.youtube.com/watch?v=3DXkput-1xNYE |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
transfer preachs sam | V. W. Nichol | Amateur Astronomy | 0 | August 15th 07 01:42 AM |
transfer | Ed. Ehrenspeck | SETI | 1 | January 5th 05 05:40 AM |
ENERGY TRANSFER MECHANICS | GRAVITYMECHANIC2 | Astronomy Misc | 0 | November 6th 04 06:41 PM |
Bielliptic Transfer | Reza | Technology | 4 | August 10th 04 11:31 PM |
SETI WU transfer | Stephen McHaney | SETI | 6 | October 10th 03 12:20 AM |