Astronomy Stack Exchange is a question and answer site for astronomers and astrophysicists. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Explore our questions

1 vote
1 answer
62 views

Which mobile/computer application can help me understand celestial coordinate systems better?

4 votes
1 answer
60 views

How to polar align equatorial mount if I see only small part of sky at south-east?

0 votes
0 answers
18 views

Recommendation for green laser pointer for 6" Orion SkyQuest?

3 votes
1 answer
41 views

The Interpretation of Uncertainty Map of NEO in Minor Planet Center page

6 votes
6 answers
8k views

Can a very powerful telescope show a person standing on the moon from the side rather than from directly overhead?

18 votes
3 answers
5k views

Why are almost all modern telescopes reflectors?

5 votes
0 answers
155 views

What are the deciding optical factors between a refractive and reflective space telescope optics as a function of aperture? (visible light)

2 votes
1 answer
62 views

Does an umbrella reflector telescope exist?

3 votes
0 answers
46 views

Are magnetic vortices capable of providing magnetic lensing when observed away from the poles

4 votes
0 answers
108 views

Would it be possible to create a telescope from a hanging reflective cloth?

4 votes
1 answer
252 views

General process of calculating what a telescope's diffraction spikes would look like?

0 votes
1 answer
205 views

How to make a 65 cm lens with a 20 cm hole in it for a Hamiltonian telescope?

5 votes
4 answers
3k views

Dish antenna as parabolic mirror for OPTICAL telescope?

1 vote
1 answer
42 views

Astrometry and Geometric Distortions

Browse more Questions