diffraction spikes造句
造句與例句
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- The diffraction spikes are therefore made even more prominent by the extra effective brightness.
- You can spot these fairly easily-they are the ones with diffraction spikes.
- Although diffraction spikes can obscure parts of a photograph and are undesired in professional contexts, some CCD.
- A small number of reflecting telescopes designs avoid diffraction spikes by placing the secondary mirror off-axis.
- An image of Sirius A and Sirius B by the Hubble Space Telescope showing diffraction spikes and concentric diffraction rings.
- In the picture at right exhibiting diffraction spikes, the spikes seem to be proportional to the brightness of the star.
- This roof edge diffraction effect may also be seen as a diffraction spike perpendicular to the roof edge generated by bright points in the image.
- Half of the mask generates a narrow " X " shape from four diffraction spikes; the other half generates a straight line from two spikes.
- In a photograph, the number of blades that the iris diaphragm has can be guessed by counting the number of diffraction spikes converging from a light source or bright reflection.
- Diffraction spikes are indeed " proportional to the brightness of the star " as you wrote initially, and in this image noticeable spikes occurred only at the very brightest stars.
- It's difficult to see diffraction spikes in a sentence. 用diffraction spikes造句挺難的
- The mask consists of three separate grids, positioned in such a way that the grids produce three angled diffraction spikes at the focal plane of the instrument for each bright image element.
- Most problems were in identifying objects that were too dim, or were difficult to identify because of brighter objects causing diffraction spikes and reflections in the camera, causing Autonav to misidentify targets.
- I purposely left the halos surrounding each star ( and their diffraction spikes ) as a way of showing the true size of the star and as an substitute metaphor for brightness ."
- This obect is a normal star, SAO 141894, which is sufficiently bright to show diffraction spike images on either side, caused by a single rib, flat mirror support in the telescope.
- On this File's description, it says " The cross-shaped diffraction spikes and concentric rings around Sirius A, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system . ".
- Not only does this cause some reduction in the amount of light the system collects, it also causes a loss in contrast in the image due to diffraction effects of the obstruction as well as diffraction spikes caused by most secondary support structures.
- :I have mentioned before that I believe many of these astronomical photographs use digital effects for artistic purposes, and that it can blur the distinction between " scientific data " from " art . " I cannot think of a good reason why those diffraction spikes should only appear selectively, as you mention.
- :: And if you look at the APOD photo again, you will see that the diffraction spikes on the two bright blue stars to the right of the galaxy are longer than the others, although not by much .-- Anonymous, July 6, 2007, 21 : 45 ( UTC ).
- The secondary is typically suspended by X-shaped struts ( sometimes called a " spider " ) in the path of light between the source and the primary, but can be mounted on other types of mounts or optical elements such as optical windows, or diffraction spikes radiating from bright stars seen in astronomical images.
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