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1 vote
0 answers
38 views

iphone & remote control tripod & stellarium

0 votes
1 answer
32 views

What is the horizon-ecliptic angle formula?

9 votes
0 answers
220 views
+200

If I can't unscramble an egg, how do Astronomers unscramble views gravitationally lensed by complex mass distributions?

4 votes
1 answer
57 views

Calculating background photons from flux levels

3 votes
1 answer
103 views

How does one convert between Modified Julian Date (MJD) and a standard (mm/dd/yr, hr:mm:ss)

10 votes
1 answer
2k views

How would a person know if a planet is orbiting a binary star?

6 votes
1 answer
256 views

Natural line width from absorption lines

11 votes
1 answer
2k views

What is the mathematical condition for the statement: "gravitationally bound"?

5 votes
1 answer
107 views

How do astronomical spectrometers measure spectra from single stars separately, without contamination from all of the nearby stars?

1 vote
0 answers
64 views

Has "crescent-twinkling" even been demonstrated or at least calculated/predicted? Any "twinkleometer" data for Venus out there?

1 vote
0 answers
23 views

Different types of line broadening in stellar and galactic spectra

6 votes
3 answers
20k views

Why does Venus flicker?

4 votes
1 answer
87 views

"To date we have covered 624 square degrees of sky near to and interior to the orbit of Venus" meaning wrt Asteroid survey Interior to Earth and Venus

6 votes
1 answer
785 views

How does the James Webb Space Telescope achieve a focal length of 131.4m?

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