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Questions related to the physical instruments for astronomical observations.

1
vote
0answers
If this is off topic, please change it to world-building. Is it possible to make a low cost heliography telescope, which is not digital, and which can be used to generate an worldwide numerical …
asked Oct 19 '17 by com.prehensible
6
votes
1answer
JW Space Telescope is designed for a 5-10 year mission duration. Seeing as Hubble and other space missions have paved the way for JWST for reliability issues, It even has zero friction gyro's with …
asked Dec 9 '16 by com.prehensible
0
votes
Here are images produced with radio waves in RGB, but they are frequency-inaccurate. YES, Radio telescopes can produce imagery... NO, radios are not in the visible range, otherwise a talky walky areal …
answered Apr 25 '17 by com.prehensible
3
votes
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A 2km comet at 40AU's can dim a sun sized star at 100 light years by 3%, and a 10km comet can cause an eclipse (is that right?) So would 2,3,10 km objects be easy to measure via star dimming if we had …
asked Dec 14 '17 by com.prehensible