1,428 reputation
113
bio website root42.blogspot.com
location Earth
age 35
visits member for 10 months
seen Jul 15 at 18:26

Coder, software architect, interest in computer science in general. Did research on computer graphics, ray tracing, radio wave and antenna simulation. Like to learn new programming languages. Currently doing Python and Emacs Lisp for fun. C++ for profit. Would like to learn more Clojure.


Oct
17
answered Does the Reflection Method for Looking at the Sun Work For Refractors?
Oct
17
answered How Does a Refractor Telescope Work?
Oct
16
awarded  Custodian
Oct
16
reviewed Approve suggested edit on How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
Oct
16
comment How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
Well, it seems the angular resolution of a telescope can be approximated by the Rayleigh limit, which is 5.5/aperture in inches. So for 10 inch, this will be 0.55 arcseconds. And a quick search tells me that the ISS is about 37 arcseconds at 410km distance. So we get at least 67 clear ISS pixels out of the 10 inch telescope! Furthermore, using super-resolution techniques, we can achieve much better resolution than that.
Oct
16
revised How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
added 2 characters in body
Oct
16
revised How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
added 7 characters in body
Oct
16
answered How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
Oct
16
comment How exactly is our universe mapped?
Are the two black slices in the diagram due to the milky way blocking our view?
Oct
15
awarded  Commentator
Oct
15
comment Is the light we see from stars extremely old?
4000 lightyears would mostly be still in our galaxy, which is roughly 100.000 lightyears across, and 3000-6000 lightyears thick. Most galaxies are at least millions of lightyears away.
Oct
11
revised How can I create tracks of the planet's orbits on my computer?
Make question more targeted
Oct
11
comment How can I create tracks of the planet's orbits on my computer?
I edited the question a bit, and would also be able to provide at least one answer.
Oct
11
suggested suggested edit on How can I create tracks of the planet's orbits on my computer?
Oct
11
comment Jupiter FM - What are practical and inexpensive ways for the amateur detection of signals from Jupiter, especially of the transit of her moons?
I would never have guessed that it might be possible with such an easy setup. Very good answer!
Oct
10
comment How can I create tracks of the planet's orbits on my computer?
What do you mean by tracking? Do you want to plot the orbits of planets? Do you want to track them in real life, using your PC and s motorized telescope? Please clarify.
Oct
10
revised Jupiter FM - What are practical and inexpensive ways for the amateur detection of signals from Jupiter, especially of the transit of her moons?
added 494 characters in body
Oct
10
answered Jupiter FM - What are practical and inexpensive ways for the amateur detection of signals from Jupiter, especially of the transit of her moons?
Oct
10
comment Should I focus more on Aperture or Focal Length for a telescope?
+1 on the Moon tip. I once accidentally pointed my scope at part of the moon and had a shadowy streak on my vision for some days. Good neutrally grey polarization filters that can be tuned from 50%-95% absorption can be had for around 50 EUR (for 1.25" eyepieces).
Oct
9
answered Why did the Comet Shoemaker-Levy-9 fragments cause such large explosions on Jupiter?