kitten22481
I have always had a weird pull toward the Pleiades constellation. So much so that I almost named my first born child after one of the stars in the cluster.
PleiadesThe Pleiades isn't a constellation. It's a cluster within the constellation Taurus.
Emily`s_Gone_Mad
But I feel modivated to get my own and that's good to know about resolution (makes sence), but magnification has to matter also...doesn't it? Magnification is meaningless ultimately. Think about it: Magnification for telescopes is determined by f(o)/f(e) where f(o) is the focal length of the objective (primary) lens (or mirror) and f(e) is the focal length of the eyepiece.
Essentially, what this should mean is that if you want a bigger magnification, you can't very well change out your main mirror, so you change eyepieces. If you want more magnification you make f(e) smaller. Take the limit as f(e) -> 0 and you could get infinate magnification with
any objective lens. That just doesn't make sense.
Ultimately there's 2 problems: The first is, that the more you magnify something, the more you spread the light you're recieving out. So the object will look fainter. That's why, when looking at faint objects like nebulae, lower magnifications are often better.
Another factor is that there's a quantum mechanical effect which causes the focused light rays to cancel one another which limits the resolution depending on your primary mirror size. Magnifying it just makes it look fuzzier. It's like trying to blow up a picture on the computer; The maximum resolution is already set by how many dpi there are. If you blow it up, you'll just see fuzz.
Emily`s_Gone_Mad
A black hole could tear you apart, but also couldn't it just as well spit you back out in another demension back together again? There's no way any machine could withstand the tidal forces of a black hole. Hell, even atoms can't.
Additionally, there's no actual evidence there's such thing as "other dimentions". It's a nifty mathematical construct but nothing suggests they're real.
sun_charm
I've heard it was made of something called phantom matter when a star explodes and the compression is so great, It creates a very thick density. I wonder how it can suck up light....That would be cool to see!! Also did you know that a white hole does the exact
oppisite? Its never been witnessed but scientests know its out there!
No. There's no such thing as phantom matter. You may be thinking of Dark Matter, but that's something else entirely.
You can't see a black hole. They pull in all light, so they're black. However, we have observed them via their gravitational effects on other objects. Most galaxies contain a supermassive black hole (or more than one) at their centres. Our own galaxy has one that's 3 million times the mass of the sun.
Also, there's no evidence to suggest white holes actually exist.
`Zeke
You will definietly make this thread interesting. I welcome you.
*lacks such knowledge as to what cluster NGC 7142 i*
eek NGC is the name of a catalogue of objects: the New General Catalogue. 7142 is its entry number.
It's an open cluster in Cepheus that not a lot of people have paid attention to because it's partially obscured by an interstellar cloud which makes observations difficult. But we like to study clusters because they allow us to test theories of stellar evolution.