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Which telescope optical or X-ray would have higher resolving power for the same aperture?
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Why does the diameter of the telescope aperture matter?
A larger telescope will have a higher resolution. It will also allow us to see fainter objects (stars, etc.).
Which telescope must be mounted high to study the stars?
They all could benefit from higher altitude. The higher up you go, the thinner the atmosphere. The thinner the atmosphere, the clearer the view through the telescope. This is why space born telescopes produce such stunningly clear images.
What causes chromatic aberration in the objective lens of a telescope?
The most chromatic aberration would occur with a single-lens refractor. However, today most telescopes employ at least two lenses, called achromats. These still incur significant chromatic aberration if the telescope has a short focal length to aperture ratio, called focal ratio. An easy way to determine if the telescope will have significant chromatic aberration is to divide the focal ratio of the telescope by the diameter of the lens in inches. A value of 5 or higher indicates minimal chromatic aberration; 3 to 5 is moderate aberration, and 3 and under is significant chromatic aberration. However, chromatic aberration is generally only obvious on bright stars or planets.
Why is oil necessary when using the 90x to 100x objective?
The oil immersion fills the space between the objective and the specimen and matches the refractive index of the glass coverslip and glass objective lens. At a given focal length, this allows you to acheive a greater numerical aperature (better light collection efficiency, better resolution).
What is the Difference between hubble space telescope and iternational space station?
There are a number of differences. First, they are in different orbits; the Hubble is higher than the ISS. The ISS is a lot bigger. Probably the most important difference is that the Hubble has a big telescope but no people, while the ISS has people but no big telescope.
What is the Definition of resolving power?
The ability of a microscope, telescope, or other optical instrument to produce separate images of closely placed objects. It's also possible to relate this to optical instruments such as computer screens or digital cameras where a higher resolution (more resolving power) will produce a clearer image.
Why does the diameter of the telescope aperture matter?
A larger telescope will have a higher resolution. It will also allow us to see fainter objects (stars, etc.).
How does exposure - aperture affect the quality of a picture?
The smaller the aperture, the more light enters the camera and onto the film. Also, the higher the aperture number the better the depth of field.
What can you infer about a large aperture?
A large aperture will not only allow you to have a higher shutter speed and to freeze action but also it will give you a narrower depth of field.
Why does a zoom lens with a lower aperture capability cost more than one with a higher aperture capability?
A lower aperture (F 1.8, 2.0, 2.8) allows for more light to be passed through the lens allowing for shots to be taken in a low light setting or a higher shutter speed used.
When you use the aperture function?
Aperture priority is the use of your aperture setting on your camera has priority over the speed priority setting. You want to use your aperture priority in the case of areas with low lighting, while your speed priority settings are set for action photos, such as sporting events. Of course, you also have to take into consideration the ISO of your film. The lower your ISO the likelier you want to use your aperture priority, while the higher the ISO, the higher likely you're going to use your speed priority.
What type of organ is the eye?
Eyes are organs that detect light, and convert it to electro-chemical impulses in neurons. The simplest photoreceptors connect light to movement. In higher organisms complex neural pathways exist that connect the eye, via the optic nerve to the visual cortex and other areas of the brain. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in molluscs, chordates and arthropods.
What determines the shallowest depth in field in photography?
The largest aperture which is the smallest number on the aperture ring/dial generally anything between f1.2 - f5.6 dependant on the lens and zoom. On most consumer digital cameras the more you zoom in the higher the smallest aperture becomes. eg. Lens at 35mm, widest aperture (shallowest depth of field) generally about f2.8 Zoom in and the largest aperture will reduce to about f5.6
What can be done to make a light spectra easier to see?
use a spectroscope of a higher resolving power.
What is the difference between a dvd player and a optical dvd player?
The difference between optical and non optical is the way the drive in the DVD reads the disk. Optical is a better and more higher quality reader. So the picture is much better.
Why are aperture antennas common among military applications?
Typically an aperture is used to form the beam being transmitted. This could be to direct communications waveforms or be related to sensor applications where it was important to locate something to a high degree of precision. If you can describe a particular aperture application perhaps more can be said. Apertures are usually associated with higher frequency waveforms.
How does Aperture affect quality of a picture?
Aperture can affect the quality of a photographic image in at least four ways. First, and most well known, as the aperture (the lens opening -- the hole through which the picture enters the camera) gets larger it lets in more light and you can take a picture in darker locations, or you can take pictures at higher shutter speeds thus freezing movement better. The next most commonly known effect is that the wider the aperture the shallower the depth of field. That is, the fewer things in front of or behind the subject of the picture are in focus. As the aperture gets smaller things further away from the subject in both directions are clear. Another way aperture can affect the image is that your lens will be sharpest at some aperture. Often somewhere around F5.6 to F8 your lens will make the sharpest (clearest) images. This is called "the sweet spot." Finally, for technical reasons, at very small apertures (usually F16, f22 or smaller) an optical phenomenon caller diffraction causes the image to become become less sharp. You can think of it that when light must squeeze through a tiny hole the light rays interfere with each other.
