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amateurAstro
  • Member for 3 years, 2 months
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28 votes

Are there any double stars that I can actually see orbit each other?

11 votes
Accepted

Recording Spectral Lines at Home

11 votes
Accepted

Locate stars in sky from list of (x, y) co-ordinates

10 votes

How "fast" do astronomical events occur?

8 votes

How (the heck) does Astrometry.net work?

7 votes

Is there a maximum Julian day?

6 votes

If the space is expanding near the speed of light or the speed of light, why Andromeda is approaching or coming near to our galaxy (Milky way)?

6 votes
Accepted

Using a 2" filter on the 1.25" adapter

5 votes
Accepted

Calculating Field of View of a Telescope Given Time of Another Object

5 votes
Accepted

What is the coordinate acceleration for pure radial motion?

4 votes
Accepted

What's the actual speed of electromagnetic radiation in space?

4 votes

Calculating distance of comet C/2019 Y4 (ATLAS)

4 votes

Why do we use the value 206265 in the small angle formula?

4 votes

When is the best time to observe M81 from the Northern Hemisphere?

3 votes
Accepted

How can I use my current camera whose zoom lens can't be removed behind an f/6 refractor for as an astrophotography?

3 votes

Turn celestial coordinates into light years

2 votes

Why does the Earth have a z-component at the start of the J2000 epoch?

1 vote

How can we estimate if a certain astronomical object will be visible from a place on earth?

1 vote
Accepted

Examples of absorption lines for main sequence stars

0 votes

How do you draw the ecliptic on a celestial sphere sketch?