Question: How can Hubble give pictures with different zoom levels? If telescopes are constructed with a fixed focal length…
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How Can Radio Telescopes Make Measurements of Small Objects?
Question: How do you use a dish type radio telescope to produce an image of something occupying such a…
Detecting a Galaxy Cluster With a Radio Telescope
Question: Is it possible for a 7-m radio telescope to detect a galaxy cluster of redshift below 0.03? —…
Where to Find Plans to Build Your Own Radio Telescope
Question: I know that the size of the telescope does determine how much info it can gather, but being…
“Starter” Telescope Recommendation?
Question: I am 22 years of age and have suddenly wanted to engange in astronomy (after watching various Brian…
Digitization of Signals Measured by Telescopes
Question: I visited the VLA site west off Socorro N.M. yesterday mid-day. Wonderful environment. When reading about the electromagnetic…