How To Use Telescopes : Schmidt-cassegrain Telescopes
Saturday, December 26th, 2009 at
9:20 pm
Schmidt-Cassegrain telescopes use mirrors and lenses to form a telescope incorporating Newtonian mirrors and a redirecting lens. Study Schmidt-Cassegrain telescopes with an observatory director in ...
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US $.01
RT Get your telescopes out: "Mystery object" to shoot past Earth Wednesday morning -
Nice Video
The CBC Quirks and Quarks podcast on “The 10% Solar System Solution” is a really interesting 9 minutes with Scott Gaudi on how to find small planets far away: We have to rely on nature to give us the microlensing events. That means we can’t actually pick and choose which stars to look at, and we can’t actually pick what times to look at. So the best suited telescopes are those telescopes we can use at anytime that are located throughout the globe so that it’s dark somewhere. And so we use a lot of amateurs, actually we don’t use, we work with a lot of amatuers who have their own telescopes, relatively small telescopes, .3 meters, .4 meters in their backyard which they can use anytime they want. We call them up when we see a microlensing event happening that we think might be interesting and we ask them to get data for us. In fact in many cases they’ve gotten crucial data for us which has helped to discover a micro-lensing event. What’s most amazing to me is how useful it is to have…
refracting telescopes are used to examine the visible-light region of the electromagnetic spectrum. typical uses include viewing the Moon, other objects of the solar system such as Jupiter and Mars, and double stars
the reflecting telescope is commonly used in astronomy because it is much easier to create a large convex mirror than to create the huge lenses that would be necessary to gather the light to see dim far-away objects
catadioptric telescopes use a combination of curved lenses and mirrors as objectives to collect light. they are good for all-around viewing because they have the attributes of both refractors and reflectors.
Great video and pleasant music. I just purchased this mount with the 8″ OTA. Your video cleared up a question I had on the finder scope mount. Upon unpacking, the finder mount had been factory attached with the alignment screws positioned at the front. This proved a problem when following Celestrons set – up instructions!! Thanks for sorting that.
#Artists –This is why you want to wear telescopes on your head: #eyes #eyestrain #create #glasses
There's exactly 100. I prefer the one where you use you pecker to see through the milky way galaxy.
I think that is a wondeful telescope and presentation. I had a Celestron C8 on a graet polaris mount. It did not have a computer or a drive. You had to use star charts with a red flaslight and learn how to find objects on your own. Called star hopping. Anyone interested in a telescope might want to consider not having a computer assisted telescope. You learn a lot more and are given the satisfaction of finding objects on your own. Which to me was the fun and adventure of it. Either way have fun.
FleaPlus writes “A group at NASA has been formulating a ‘Flexible Path’ to Mars architecture, which many expect will be part of the soon-to-be-announced reboot of NASA’s future plans. NASA’s prior architecture spends much of its budget on creating two in-house rockets, the Ares I and V, and would yield no beyond-LEO human activity until a lunar landing sometime in the 2030s. In contrast, the Flexible Path would produce results sooner, using NASA’s limited budget to develop and gain experience with the technologies (human and robotic) needed to progressively explore and establish waypoints at Lagrange points, near-Earth asteroids, the Martian moon Phobos, Mars, and other possible locations (e.g. the Moon, Venus flyby). Suggested interim goals include constructing giant telescopes in deep space, learning how to protect Earth from asteroids, establishing in-space propellant depots, and harvesting resources/fuel from asteroids and Phobos to supply Moon/Mars-bound vehicles.” Read more of…
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Grab your telescopes! RT – Look east after sunset tonight to check out the Moon and Mars together!
Many Wavelengths, Many Telescopes: How Observatories Reflect the Challenges of …
Hi Reflection is when light bounces off a reflective surface, usually metal coated glass. Refraction is caused by light traveling through a surface at an angle. Steeper angles produce more bending of the light. The rest of your question relates to how well other parts of the spectrum would respond to these properties. Not well I'm afraid. X-rays for instance need an extremely close angle of incidence to reflect. (Look up 'Chandra'). Radio waves use metal reflectors etc. Hope this helps.
There are 2 types of optical telescopes only, Refractors (invented about 1608) which use lenses and Reflectors (invented about 1668) which use mirrors.
Of these 2 types there are hundreds of variations for different specialist uses, but all of these are based on those 2 types.
(This excludes Radio Telescopes, XRay Telescopes, Superconducting Tunnel Junction Telescopes and the like. The list of these types and optical types is rather long.
Yes!
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Astromomy Telescopes Reviews
90 mm catadioptric on a go-to mount. I had one they’re crap. Aperture is too small for faint objects and the secondary mirror causes a loss of contrast, which is what you want for the planets. Not a good all round ’scope. Plus the tripod supplied raises the ’scope by about 10 inches only. No good for serious viewing. Put it on a camera tripod and it shakes allover the place. Can’t get a steady view. Any telescope is only as good as the mount its on.
cool video
Thinking Cellar tonight – The Telescopes. Anyone else going?
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nearly froze on the roof of the hicks building today, 3 hours playing with telescopes, 2 degrees with snow on the ground and 40mph winds : /
Astronomy: View from the Ground (source: Sciencemag.org): Over the past few years, space telescopes have enabled scient
yay daddy!
X-rays don't make it to Earth, so all the x-ray telescopes are in space. Since space telescopes are expensive, it's possible to name them all. They are Chandra, XMM Newton, and Hinode. This last is looking at the Sun. x-rays are emitted by very hot and energetic phenomenon. So they can be used to spot jets from black holes, neutron stars, and stars at their birth, as well as novae, supernovae and hypernovae. Not sure how much you get from main sequence stars in the xray part of the spectrum. Fortunately, there are telescopes in other wavelengths to help.
If you plot the light curve of a star over the spectrum, you get a classic shape. The peak frequency of light is related to temperature. Not all stars have luminosity peaks in the visual range. The Sun does. But very big and bright stars might peak in the ultraviolet, and small dim stars might peak in the infrared.
Looks like there's a whole host of Telescopes. Thanks!
So God is infinite does nothing until this moment, does 7 “Phases” and then does absolutely nothing again.
Topernic, your misunderstanding is: you *believe* that atheists also *believe* in something. Atheists believe in nothing, there is not a single atheist in world that can “prove” you something, that’s pointless. Atheism is all about following a scientific approach and ignoring beliefs.
The farthest object observed by telescope is a gamma ray burst 13 billion light years away. The universe is only 13.7 billion years old, so we can't look further than 13.7 billion light years theoretically. However, until 13.5 billion years ago, the universe wasn't transparent, so we will never be able to look at something closer than 200 million light years from the "edge".
The universe is probably larger than 13.7 billion light years in radius, but we can never see what lies beyond that mark.
However, these flashes are very dim and rare, so no regular telescope would ever be able to see them. The furthest points we can observe in the visible spectrum are much closer, and the things we can see from earth are even closer, and the things visible to a human looking through a huge telescope are closer still.
All light you have ever seen in your entire life comes from this galaxy. The furthest objects visible to the naked eye in the western world (due to air pollution) are in the center of the milky way, some 30,000 light years away.
However, in places no plane regularly visits with no planes within ten miles, you can see more stars. Some of those stars may be different galaxies. Those you can see with your eyes are within ~50 million light years.
With huge telescopes, you can see a lot further, but eventually the atmosphere will screw with you and blot them out.
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Written in C#
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trust me alot!
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Yes it’s very good (celstron)
Just played: The Perfect Neddle – The Telescopes – The Perfect Needle EP(What Goes On)