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925
bio website ForTheScience.org
location Amsterdam, The Netherlands
age 37
visits member for 3 years, 11 months
seen Sep 29 at 22:47

Aug
6
awarded  Nice Answer
Jun
3
awarded  Nice Question
May
28
awarded  Popular Question
May
13
awarded  Popular Question
May
4
awarded  Nice Question
May
4
awarded  Nice Answer
Nov
10
awarded  Yearling
Oct
6
comment A telescope with a bunch of small mirrors
Also, the larger is the parabolic structure (so the larger is the telescope), the less the deviation would be important, so for the limit of a very, very large telescope, a flat one would be a reasonable approximation. Right ?
Oct
6
comment A telescope with a bunch of small mirrors
ok, but if the mirrors are flat, what effect would this deviation have ? less resolution, coma effects, chromatism, or would the telescope would just plain not work (optically, it would not make a focused, observable image)
Oct
5
asked A telescope with a bunch of small mirrors
Jun
17
accepted Why is M42 red in the pictures, but green when observed at the eyepiece?
Jun
17
comment What if our Sun were located in the middle of a globular cluster?
The view? damn epic: on one side the rest of the cluster, on the other side, the full Milky Way. I'd give my life to see it once with my eyes.
Jun
17
comment Telescopes to avoid as a beginner?
If you can't keep a steady hand with the binocular it means that the multiplication factor is too high. You can find mounts, but as a beginner you don't need high magnification. You need instead to learn your way around the sky, and be able to spot features (like nebulas or prominent galaxies) that are hard to see with the naked eye, but are invaluable for a more advanced initial exploration. @jonathan
Jun
11
comment Are the Voyager probes still sending us a signal ?
it's incredible to see how an object launched tens of years ago just traversed a bit more than half of one lightday of space. Gives an idea of the chances of getting anywhere close to traversing lightyears...
Jun
5
comment Is the length of the day increasing?
the title does not really match the content. I was expecting a different discussion.
Jun
3
answered Telescopes to avoid as a beginner?
Jun
3
answered Can any telescope be used for solar observing?
Jun
2
comment A method to estimate the relative magnitude of a star using nearby stars
it was a historical, rather approximate method. Of course there are better methods today, but I fail to remember the name, and I was curious if someone remember it.
Jun
1
asked A method to estimate the relative magnitude of a star using nearby stars
Jun
1
comment What is exactly a Dobsonian, and what are the differences when compared with Schmidt-Cassegrain or Newtonian?
did you build it yourself ?