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Thursday, September 10, 2009

When Size Matters - Choosing Giant Telescope Binoculars

Telescope binoculars, also known as astronomy binoculars, are not your run of the mill binoculars, as they are especially geared for use in astronomy or stargazing. The difference has to deal with magnification and aperture as well as the types of mounts. Aperture is of course the widest opening on a pair of binoculars and it indicates the amount of light rays that will be admitted into the binoculars. This is measured by the diameter of the aperture. For instance giant telescope binoculars that have an aperture of 25X100 or larger will regulate how well you will see at night when stargazing. The aperture size is referred to as a 100mm's in the case of 25X100 telescope binoculars. The technical name for this is objective lens diameter.

Magnification is commonly defined as something like 8X or 10X. This means that with the 8X an object will be eight times nearer than what the human eye can see. Also, you may wish to know about the exit pupil factor. The magnification such as the 25X above and the diameter of the objective lens will determine the size of the exit pupil. Just divide the objective lens diameter (100) by the magnification (25). In the case above the diameter of the exit pupil, which will determine how much light will be transmitted to your eye when you have a 25X100 results in 4mm which is not very good, as you should purchase a giant telescope binoculars that have at least an exit pupil of over 7mm.

Telescopic binoculars or astronomy binoculars proffer the highest and best of optic choices-a true telescopic presentation but without the unpleasant eye strain or squinting required of a telescope. Also the high-end giant binoculars offer image stabilization which is not possible in hand held binoculars but can be found in those that will be mounted. This way, a strong breeze, for instance, will not make your image jiggle to cause significant discomfort to the user. You should know that image stabilization requires the use of a battery to power it.

Telescope binoculars have two eyepieces, usually made with soft, molded cups for eye comfort. Telescope binoculars may come with exchangeable eyepieces depending on the cost. Each eyepiece may come with its own focusing capability. Ordinarily they have a very sleek, modern design. When used with a tripod, they are the excellent telescopic binoculars for stargazing at its best.

Costs for such giant binoculars range from the very affordable Celestron SkyMaster Series, to thousands if you are desirous of the upper, upper best such as the VIXEN BT125A 125mm binocular telescope package with 2 LVW22MM eyepieces, tripod, fork mount 5835P2 which retails for $4,999.99 though, of course, these are not meant for the beginner astronomer. Costs for window-mounted tripods that can be used to mount your binoculars to a window sill or even your car window, begin under $50. Regular tripods start at approximately the same price, but can climb to as high as $500 for a some Swarovski models.



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NASA IBEX Probe Search For the Edge of the Solar System

The NASA IBEX probe also known as the Interstellar Boundary Explorer, is a NASA satellite that will manufacture the first map of the boundary amid the Solar System. The operation is part of NASA's Small Explorer program and the probe was launched on a Pegasus-XL rocket on October 19, 2008. The primary mission will last for approximately 2 years in which it will endeavour to map the complete solar system boundary.

The IBEX mission is being directed by the Southwest Research Institute, with Los Alamos National Laboratory and Lockheed Martin Advanced Technology Centre serving as Co-Investigator institutions accountable for the IBEX-Hi and IBEX-Lo sensors. Orbital Sciences Corporation supplied the spacecraft bus and was the location for spacecraft environmental examination. NASA masterminds have remotely examined the systems aboard the spacecraft and so far, said Eric Christian, program scientist for NASA's Interstellar Boundary Explorer program, all systems are fully operational.

The spacecraft will centre its concentration on the 'interstellar boundary', the brink of our solar system where the hot solar wind sweeps into the cold expanse of space. The active neutral atom (ENA) generated images IBEX will capture, will expectantly help scientists figure out the fundamental interaction between our sun and the Milky Way galaxy. The interstellar boundary areas are important because they protect the Earth from the huge and extremely dangerous galactic cosmic rays, which otherwise would enter into Earth's orbit and cause human space flight to be much more hazardous. NASA began collecting data on the outer reaches of the solar system when Voyager 1 and 2, began in 1977, and navigated through our inner solar system for a trip toward the frontier. Officials commented at the time that both Voyagers had obtained "totally unexpected" data from both spacecrafts, and this valuable data refuted many long held ideologies about the region.

Using this information, research workers will inspect the structures and dynamics of the outer hemisphere and address a genuine test facing manned exploration, by investigating the area that shields Earth from the majority of galactic cosmic ray radiations. It has now been 4 months since the original launch, and IBEX Principal Investigator Dr. David McComas commented that they are receiving some 'fantastic science results'. It is understood the data produced so far have provided some exceptional clear spatial variations in both the fluxes and energies of the neutral atoms travelling in from the edge of the solar system. A significant progress update is expected to be announced this summer following the completion of the first all sky map.

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A Quick Guide to Understanding How Telescopes Work

If you are new to being a telescope owner or if you are considering making your own, then you will want to know all you can about telescopes and how they work. This article will give you a quick guide to understanding how telescopes work. It is important to know that every telescope pretty much works in the same manner. They all use light to focus on a particular point where you use a microscope to bring the image into focus for the person to see. When it comes to the different types of telescopes, you will find that there are actually 3 types to choose from.

Your choices in telescopes consist of the following types: one that is known as a reflector, which uses a mirror that is curved and placed at the lower part of the tube. The image is then reflected to a flat mirror that is at an angle, which then projects the image to your eye. The next choice would be a mirror-lens. This can also be called a Catadioptric telescope. This type will use both lenses and mirrors making these telescopes the most advanced telescopes. You can use this for both astronomical and land viewing. Many people like these as they can found in compact designs to make use of them very simple and effective. The final choice would be the refractor telescopes. These are most common with people that are just starting out with using telescopes. This is a long tube that will have an eyepiece on one end and on the other end, you will find a lens, nothing fancy. This type works by taking the light and refracting it so that it bends and comes into focus.

You may find that some telescopes will use what is called a curved lens that will actually bend the beams of light where other types of telescopes will use curved mirrors. Now let's go over the basic parts and types of telescopes so you will have a good understanding of this wondrous tool. The optical element of the telescope is the mirror or lens and this is known as the aperture of the telescope. If you are looking for images that are sharper or brighter then you will want to go with a telescope that has a larger aperture. The size of the aperture is what you will look for when looking for a powerful telescope.



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