Florin Andrei

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bio website florin.myip.org
location California
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visits member for 1 year, 11 months
seen May 16 at 19:37
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I don't use primary optics which are not made by myself.


75 Answers

newest activity votes
22
Can the “Milky Way” galaxy be seen by the naked eye in a clear sky?
15
How long does it take to travel 36 light years with tolerable acceleration and deceleration?
13
Will a hole cut into a metal disk expand or shrink when the disc is heated?
12
Please explain the physics of a Cloud Chamber
11
Is it safe to observe the sun through binoculars with welding glass in front?
11
Why can't you escape a black hole?
10
Why can I never see any stars in the night sky?
10
Is it possible to see satellites with the naked eye?
10
Is building your own reflector telescope worth it?
9
Can you damage your eyes viewing Venus?
9
Do all the individual stars that we can see in the night sky belong to Milky Way?
8
Are planetary orbits measured from the Sun's surface or centre?
7
If we were to travel through space (sci-fi style), how close to the false-color images would the galaxies we see be?
7
What sort of propulsion would we require for interstellar travel?
7
What is the minimum magnification needed for an instrument to see all the Messier objects?
7
Could there be a body of water the size of a planet?
6
Is there a limit to the resolving power of a mirror telescope?
6
Telescope for 6 year old and dad new to astronomy
6
What to show a beginner
6
What are the differences in using an eyepiece with a barlow instead of a shorter eyepiece?
6
Are telescopes with a concave lens useful for astronomy?
6
Why is the universe so organized?
6
Metal Dilemma: Only very few civilizations per galaxy
5
How can I determine if my telescope mirror is parabolic?
5
How can I stabilize an unstable telescope?
5
Why do clusters of stars eventually dissipate?
5
Why is the speed-of-light “the upper limit” rather than the speed of “particle type X”?
4
Quality loss when adding more components to a telescope?
4
Light years and redshift from our point of view. How can we see it?
4
How could they tell things weigh a sixth of their “Earth weight” on the moon?
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