Astronomy Lab #5 - brightness that it creates by emitting...

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George Voren Thursday, 10-18-07 Astronomy Lab Lab #5: The Electronic Camera in Astronomy The use of CCD cameras allows astronomers to capture an increasingly large amount of light depending on how advanced the charge-coupled device is. The benefit of a CCD is that there is no limit to how large and intricate it can be built. Therefore, the amount of objects in space that we are able to see will continue to increase with the increase of pixels used in the chip. The further a star is from the Earth, the fainter the amount of light visible from Earth. We need extremely sensitive CCD cameras to pick up these bodies in space so that we can have a better understanding of what exists in the universe and how different celestial bodies interact with each other. Measuring the magnitude of a body in space what is involved with photometry. Since CCD cameras are usually used for capturing the light emitted from a star, the relationship between these cameras and photometry is obvious. Every star has a different
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Unformatted text preview: brightness that it creates by emitting light. Stars generally come inside a group of stars called a star cluster, which is pretty much just a small group of stars with the same birth period in a small volume of space. Taking pictures of these star clusters allows astronomers to learn about stellar evolution and the lifetime of different stars. After photos have been taken and photometry has been applied, astrometry is used to measure the positions of stars to determine how they move and how they are related to surrounding bodies in space. Consequently, a good CCD camera is needed in order to perform accurate measures of astrometry. Astrometry uses angular separations and position angles to determine where a star is in relation to the other stars in its star cluster. This allows an astronomer to see which objects are rotating and how they are rotating....
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