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Some of the Advantages of Webcam Astrophotography are: |
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Webcams are far cheaper than conventional cameras or astronomical CCDs. |
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Webcams use USB plug-and-play technology, meaning they are easy to install on a computer and have fast image download times. |
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Webcams provide real-time feedback. Focus and exposure are adjusted on the fly to insure best results. |
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Each webcam video imaging session produces a single unique image. |
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There is no need to wait for a full roll of images to be taken before developingthem. |
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Webcams can create animated images and movies of changing events such as transits of Jovian moons or lunar occultations of bright stars and the planets. |
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Webcam images are digital-friendly, meaning they can be printed, posted on the Internet, or emailed without the need for developing or scanning. |
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Except with special black-and-white cameras, webcam images are in color. There is no need for combining tri-color images when doing lunar and planetary work. |
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With the use of proper software, some of which is free, webcams can be used as autoguiders for other forms of astrophotography. |
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A webcam shutter, the device that controls the length of an exposure, is entirely electronic. |
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This gives webcams a great advantage over standard cameras in that there is no mechanical shutter to wear out or malfunction. |
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A webcam can easily take more individual exposures in a single evening of lunar photography than someone will take in a lifetime of snapshot photography. |
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For instance, the full Moon mosaic on page 2 of this book is the summation of 28,800 individual video frames. This is the equivalent of snapping 800 rolls of 36-exposure 35mm film. |