Designing a Home Radio Telescope for 21 Cm Emission

Re:Designing a Home Radio Telescope for 21 Cm Emission by wbl on Monday November 04, 2024 @03:09PM (#42045541)

Thanks to the rotation of the earth and antenna fixed in one direction sees a bunch of the sky over an evening.

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Re:Designing a Home Radio Telescope for 21 Cm Emission by spacedcowboy on Monday November 04, 2024 @05:05PM (#42046450)

Yep "drift scanning" :)

A single dish/node can't really produce photograph-like imagery akin to an optical telescope, more often[1] you get something like in the setileague website hits [2].

[1] Where by "more often" I mean "once in a blue moon".

[2] http://www.setileague.org/photos/hits.htm

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Re:Designing a Home Radio Telescope for 21 Cm Emission by magicalhippo on Tuesday November 05, 2024 @05:38AM (#42050365)

The CHIME telescope[1][2] is an example of that.

It's a bit more advanced though, the multiple antennas allows them to "steer" the antenna after the fact through signal processing.

[1]: https://chime-experiment.ca/en

[2]: https://en.wikipedia.org/wiki/Canadian_Hydrogen_Intensity_Ma...

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