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In binary code (either a 1 for a pixle or a 0 for no pixle), then sent to NASA by radio.

0001000000000010000

0001000000000010000

0000001000000100000

0000000000100000000

can you see the V above?

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12y ago
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9y ago

Images are recorded in structures and devices that can perceive images, and can store them
in a form suitable for later viewing or for delivery to some other location.

In reference to telescope images, there's one device that at one time was the only one ever used.
But as time went on, its use steadily decreased, until now, it's very seldom used for professional
work. That device is the eye and all the peripherals and other components in the system of which
it's a part. The system can perceive images, but only in visible light. The form in which they're stored
is in brain memory, which only works for one observer, and the image can't be delivered to others.

If the eye isn't being used, then we tend to call any other system a 'camera'. It's not quite right to say
that they all work in the same way, but they all do share the same 'high level' principle: Some other
sensing surface, other than the retina of the eye, is placed where the telescope forms the image.
For visible light or wavelengths close to it, the sensor may be a piece of photo film or a digital device
such as a CCD, sensitive to the band of wavelengths of interest. (The telescope gathers and focuses
a lot more than just the visible wavelengths, on both ends of that range.)

Film captures the image in the old familiar way, which can be stored, printed in books, or even
digitized later.

A digital device delivers its image directly as digital data, ready to store just as any other information
is stored in digital form ... on tape, in solid state memory, on a server or on a DVD etc., and it can be
delivered to other astronomers by email, by radio from the Hubble scope, on a flash drive, on a
website, or on the astronomer's Facebook page.


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9y ago

With cameras.

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Q: How do astronomers record images from telescopes?
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Why might astronomers use different types of telescopes to obtain images in space?

to get every view


The instruments that can record images from telescopes by changing radiation into electrical charges?

lens possibly


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The telescope wasn't invented until about 1604, so "early" astronomers had no telescopes.


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Their eyes, ground-based telescopes, space telescopes.


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Astronomers have used telescopes and charge coupled devices.


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Yes, both of them. And they also use reflecting telescopes.


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Very little astronomy is still done by physically looking through telescopes, so astronomers can basically work any hours they want. The really large telescopes are quite expensive and tend to be shared (and located in remote, desolate places). Most astronomers rely on dedicated on-site staff at the scope who collect images or data for the astronomers to analyze later.


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