How to Buy a Telescope : Binoculars Vs. Telescopes
Monday, February 22nd, 2010 at
10:15 am
Binoculars may be the best starter telescope for you! Learn how to choose between binoculars and a telescope in this free home astronomy equipment video from a telescope designer and manufacturer. Expert: Bill Burgess Bio: Bill Burgess is the owner and founder of Burgess Optical, which is world-renowned for its custom-built telescopes and planetary eyepieces. Filmmaker: Dimitri labarge
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@bilalk428,
Hi, a question about the coating. What does it mean? The inside of a tube or what? I’m talking about a Newtonian reflector.
You would need the smallest binoculars possible, so as to not alert any outside observer towards your peeping tomfoolery.
You might be tempted to purchase stronger “giant binoculars,” but unless your neighbor is hundreds of yards away, a simple pair will do.
Hope this info helps you in your quest to observe mammaries upclose.
get vivitar 7×50 uv coated optics there great and also come with storage a pouch
lol i always wondered what the numbers ment on them so the first number is the times of magnification by the second number is the size of the lense mine are 10×42 leuplod acadia
This is a video is purporting to help those buying a telescope, yet mentions little in the way of telescopes and all of it ends up being about binoculars…
Suggestion: rename the title: “How to buy binoculars”
I understand the need to cover the subject of binoculars vs. telescopes but that is a subject all in itself.
I had to give it 2 stars for this reason.
Nikon 7×50 is the best for the money …they work well and i can see 4 of jupiters moons and tell thier movement each night..seriously they are great to start with..
For that u would need a good pair of eyes! WHich i assume u dont have soo, for get it!
hahahaha yeah
Help: I just ordered the Celestron Skymaster 15×70..could you recomend a tripod ?. I will use it mainly for sky watching. Thanks for the video.
You should choose binoculars
what would be the best thing for looking at my neigbors breasts covertly ?
Enjoyed the video and the information you provided. Thank you.
Unforgettable. Thanks for uploading.
"I am unable to accept the philosophy of either the telescope or the microscope." –W. Macneile Dixon
Assuming that the telescope is of high quality construction, and that the atmospheric conditions are perfect for observations, then the resolution is limited by diffraction.
Light passing through the lens interferes with itself creating a ring-shaped diffraction pattern, known as the Airy pattern, if the wavefront of the transmitted light is taken to be spherical or plane over the exit aperture. The result is a blurring of the image. An empirical diffraction limit is given by the Rayleigh criterion invented by Lord Rayleigh:
The images of two different points are regarded as just resolved when the principal diffraction maximum of one image coincides with the first minimum of the other. If the distance is greater, the two points are well resolved and if it is smaller, they are not resolved. Mathematically, this translates into:
D=1.220 x w/sin r
Where D is the diameter of the main mirror or lens
w is the wavelength of the light
r is the resolution required in radians
In this case we have:
w = 5000 Angstroms
r = 0.4 arc seconds = 0.000111111 degrees = 1.93925 x 10^-06 radians
sin r = 1.93925 x 10^-06 radians
Therefore
D= 1.220 x 5000 / 1.93925 x 10^-06 Angstroms
D = 3,145,538,295 Angstroms
D = 31.46 centimeters
or about 12 inches.
ATN Corp FLIR-HS-307 Patrol 65 mm Thermal Imaging TIMNHSPT65
by ATN
Date first available at Amazon.com: February 21, 2010
(Ranking is updated hourly. Visit the Hot New Releases in Binoculars, Telescopes & Optics list for authoritative information on this product’s current rank.)
Well, a telescope was one of the early links in the domino effect that led to the scientific revolution. You can't say for sure how things would be now if thing X had never happened because who's to say that something else might have happened in stead to get us right to where we are today anyway….
Gallileo's discovery of bodies orbiting Jupiter sent shockwaves through society – this represented a questioning of the establishment's authority. This in turn loosened their grip on society, allowing for more discoveries, etc, and not only in astronomy.
Speaking strictly about astronomy, we wouldn't know about extrasolar planets, we wouldn't know that the planets beyond Saturn exist. We might not have ever bothered to send out probes into space, since it would have been quite difficult to pinpoint the planets for rendezvous. These probes most surely would need to be landers, since without telescope technology, no useful pictures of them could be taken from space, even in orbit around them.