根据第二段中“The most direct approach is to take a picture of it with a telescope. However, more effective way is to use "the Doppler technique". This involves analyzing starlight for evidence that the star's movement is affected by the gravitational pull of a planet. (最直接的方法是用...
Yea, I think I will need to stay with a bi-focal design of some sort, finding a place to put my glasses when looking thru the scope with out glases is a pain, and i'lI definitley need the perscription to just look up at the stars and see any detail. thanks for touching on the...
Specifically, the distance from each telescope to the point of recombination must be the same to within a small fraction of the wavelength of light. For visible light, the wavelength is about 0.5 µm. But, even if the optical paths for each telescope are nominally identical, real-world ...
I consider aDobsonianReflector to be the best telescope type for a beginner due to its combination of ease of use, function, and affordability. For astrophotography purposes, a compactapochromaticrefractor is best. A Dobsonian telescope with a healthy aperture (8″ is perfect) is great for explo...
The launch and deployment of the Webb was a very risky and intricate affair. The telescope had 344 single-point failures. That means there were 344 things that, if they went wrong, would scuttle the entire mission. Unlike other space telescopes, the Webb is not in Earth Orbit. Rather it ...
MALE PROFESSOR:A lot more detail. The image we get is something like 50 times finer than what you get with a single-mirror, conventional telescope. 教授:细节多了去了。得到的图像比使用单镜传统望远镜的成CC像要精细 50 倍。 So, why is that important?Now, think back a minute. ...
Though the sky is not totally dark during the astronomical twilight phase, it is often a good time for astrophotographers to prepare for their imaging session. You can do this by: Polar aligning your telescope Focusing your cameraon the brightest stars, ...
A safe way to view a solar eclipse is to construct a "pinhole camera." A pinhole or small opening is used to form an image of the sun on a screen placed about 3 feet (or about 1 meter) behind the opening.Binocularsor agood telescopemounted on a tripod can also be used to project...
What is a ground-based telescope?Types of Telescopes:There are two basic types of telescopes, reflecting telescopes and refracting telescopes. Reflecting telescopes are much more used by professional astronomers, and can reach enormous sizes, depending on the wavelengths they are made to detect....
Page 1 of 3 - What type of telescope for beginners? - posted in Beginners Forum (No Astrophotography): This is my 2nd go round with astronomy, first 25 years ago with my son, I purchased a 50 mm refractor at the local hobby shop, no clue what brand, it