You might want to try this telescope kit.
2006-11-08 03:27:06
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answer #1
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answered by campbelp2002 7
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The Mars Exploration Rovers (Spirit and Opportunity) can image details as small as a tenth of a millimeter on the surface of Mars. Of course, they're on Mars. The Mars Reconnaissance Orbiter (MRO) can image details as small as about a half meter from orbit. It's in Mars orbit. Really, it's a spy telescope in Mars orbit. These do much, much better than the Hubble Space Telescope for Mars. The HST has some of the best resolution of any telescope ever built. The twin Keck telescopes, the quad VLT telescopes, the Large Binocular Telescope are some of the big instruments on Earth. But Very Long Baseline Interferometry does quite well with resolution in the radio spectrum. Mars is tiny compared to galaxies. It's approximately 0 light years across. Our galaxy is 100,000 light years across. That's how distant galaxies can be imaged so well. My ten inch (254 mm) telescope might fit on your balcony. It's currently around $700 US ($839 AUD). You're not going to be able to see Apollo hardware on the Moon with it. Currently no scope on Earth can do that. But, low magnification or high, the images are sharp. You should probably get yourself to an astronomy club, and check out scopes of different sizes. I like my 10 inch just fine. But i've looked through 4 inch (100 mm) and 22 inch (558 mm) scopes too. So now i've got some idea what to expect.
2016-05-21 21:55:21
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answer #2
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answered by Anonymous
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You can use any two lenses that have different focal lengths. The magnification power can be computed by dividing the smaller focal length into the larger one. The one with the shorter focal length will be the eyepiece lens and the one with the longer focal length will be the objective lens. You can also use a magnifying mirror as the objective and make a reflecting telescope. The quality of the image won't be that great because these mirrors are not very accurately made.
2006-11-08 02:58:23
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answer #3
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answered by Anonymous
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The magnification of a telescope is the focal length of the objective divided by the focal length of the eyepiece. In a reflecting telescope the objective is the mirror which would have a focal length of around 1 meter. If the eyepiece had a focal length of 6mm then the magnification would be 1000/6 or 166.66 times.
2006-11-08 05:01:57
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answer #4
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answered by kevpet2005 5
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You can make a telescope almost entirely from scratch, partially from scratch, or from a kit.
If you want to build it entirely from scratch you'll most likely be building a reflector. You will have to buy the glass blank for a mirror from some place like Newport Glass, along with a grit kit and the proper grinding equipment, or send it out to be grinded and polished. You'll also have to buy a tube, mirror cell, secondary mirror, spider, focuser, etc.
To simplify this process you can buy the mirror already made, in which case you can make a Schmidt Cassegrain.
If you want to do it either of these ways I suggest buying a telescope making book or going to www.atmsite.org
You may order telescope kits from a few places and they'll send you just about everything you need.
For parts and kits you can look here: http://www.e-scopes.cc/
For just parts, you can find them at www.scopecity.com
You can also buy kits/plans to make large truss tube Dobsonians, or even apochromatic refractors, but the latter is expensive.
2006-11-09 08:36:15
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answer #5
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answered by minuteblue 6
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search the web for dobsonian telescopes, you should be able to find plans to build your own 6" reflector or even bigger, these are really quite good scopes, the bigger the scope the better the resolution but it will also be more espensive to build you can increase magnification by using different eyepeices. i built a dob, it takes about a weekend once you have all the bits and cost ~£200 excellent for the moon and planets and not bad for andromeda and pleiades etc.
2006-11-09 00:37:34
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answer #6
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answered by jen_82_m 3
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Search on the internet
2006-11-08 05:40:27
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answer #7
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answered by BigMarshmallow 2
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