Recent content by alseth

Hello guys. I was trying to determine the geographic location of the observer by measuring the elevation of two distinct stars at a certain time. Well, I am not very skilled in programming and I found this script for Octave and tried to use it. My data: Star A: Arcturus(α Boo) Right...

Well, you watched it about 9 hours after the peak (which was not as spectacular as expected anyway). The ZHR at that time could be well bellow 40 so it is not that strange. I didn't see anything either (observed at 22 UT - about peak-time but the radiant was quite low and the weather was crappy...

Comet C/2008 O2 McNaught photos?? Hey guys, I was wondering why there aren't any photos of this comet around. It's quite bright (7.2 mag) and its position is very favorable towards the observers on the northern hemisphere- near the pole, actually... Usually, there would be some galleries on...

Well, there are some courses in English that I know of (masters mainly) but I have no idea about the possibilities for non-Czech/non-Slovak speakers to study here so I really can't tell you anything. I can find out if you want though.

Hey, I am currently studying at Masaryk university (astrophysics undergrad) and in my opinion the math there is on a higher level than in US/UK unies (judging from the online material and lecture videos). Its a good university but I think you should check out Charles University in Prague. The...

You can split the planets into two major categories: Terrestrial planets: Mercury, Venus, Earth, Mars a jovian planets such as Jupiter, Saturn, Uranus, Neptune. There are a lot of differences in: - size: The jovian planets are much larger. - mass: The jovian planets are much more massive -...

Yeah, you are right. In fact, it's the same thing. The thing I wanted to point out was that you substituted the speed you calculated instead of the angular frequency (omega) in that second part of the problem.

Your method is fine but you have substituted the wrong value for omega in the second part of the problem. Just correct it and add a minus sign in the formula for acceleration.

You can definitely do it. I have found it through my Newton without using a finderscope. I think your binocs are well suited for this kind of observation. You may want to use a tripod for this though...

its mainly cyanogen and some diatomic carbon gases

They are mostly members of Apollo or Athen groups (aka earth-crossers asteroids). But the possibility that we will got hit by an object which was grav. expelled from other groups such as the asteroid belt is not zero either.

Well, Hale-Bopp was one of the brightest comets seen for many decades. Astronomers do not expect any comparable comet to show up anytime soon. Hale-Bopp was discovered almost two years before it passed perihelion so when you think about it, the chances are quite slim(almost none). At least for...

but it certainly would be interesting to have such a peculiar object which made that GRB only 12,2 ly away (well, not mentioning the Earth sterilisation side-effect...)

as was previously said just equate the expressions for the gravitational force and the centripetal force GMm/r^2=m(v^2)/r and play with it a bit then use some basic formulas for circular motion for angular velocity and time period and you will get the expression for T and R with some constants...

sanphy, the type of telescope you need depends on what you want to observe. If you want to do planets then you should aim for the highest useful(!-cannot emphasize enough) magnification possible. Then a refracting telescope is better for you but this type of telescope(with sufficient...