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1 vote
2 answers
2k views

Calculate Dec and RA of a star from Euler angles and GPS data

Mark O
  • 1
6 votes
1 answer
335 views

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

CommunityBot
  • 1
2 votes
1 answer
92 views

What is the diameter of a telescope lens that will capture the surface of Proxima Centauri b?

GrapefruitIsAwesome
  • 1,678
5 votes
2 answers
825 views

What is the gain of a telescope?

Dinesh Maheswari Vaittinadane
  • 1
1 vote
1 answer
59 views

Can we see the colorful patches or the strip of milky way galaxy with reflector telescopes?

James K
  • 100k
0 votes
1 answer
257 views

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

CommunityBot
  • 1
1 vote
0 answers
67 views

Can we use plain mirror as a secondary mirror in cassegrain telescope?

planetmaker
  • 14.2k
18 votes
6 answers
5k views

Could we detect the light of cities at night in other solar systems?

ScienceAJ
  • 683
6 votes
1 answer
547 views

For lenses, what is the practical difference between plano- and bi-?

uhoh
  • 30.4k
2 votes
1 answer
95 views

Could two-way mirrors be used to completely eliminate obstruction for a reflector telescope?

ProfRob
  • 129k
11 votes
2 answers
971 views

What visual artifacts are expected from the JWST?

ProfRob
  • 129k
4 votes
1 answer
201 views

What is the probability that a photon that enters the aperture is registered?

ProfRob
  • 129k
3 votes
1 answer
96 views

Why does the altitude-azimuth mount have a blind spot near zenith?

Saurav Maheshkar
  • 221
4 votes
0 answers
77 views

Is my TAL-1 telescope too old to be useful

user3476571
  • 41
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