Choosing The Right Telescope
Ever since Galileo, people have been pointing telescopes to the heavens and expanding their view of this world by looking outside of it into other worlds. It can be a fascinating and rewarding endevour. You can even meet some very good friends this way as there are usually local star-gazing clubs within reach of almost anywhere in the country that offer plenty of companionship when using your telescope.But how do you choose from the wide array of telescopes that are being sold today? Well, first of all you need to understand just a couple of basic points about telescopes. One is that magnification is not really the most important characteristic of a telescope. That may seem very strange, but the truth is that the most significant capability of a telescope is it's ability to gather light.
After all, what good is a large image that you can barely see?The light gathering capability of a telescope is usually in direct relation to the size of it's aperture or it's light gathering lens or mirror. Now, you are probably thinking that you just need to get a telescope with the largest aperture possible then, but that is not the case. Somewhere along the line there will be a tradeoff between the size of the aperture and portability. So if you want to transport your telescope at all, you will want to make sure that it is not too heavy and bulky to be mobile. Remember that you will also most likely have to set up and adjust your telescope in the dark if your transport it, so having one that is very large can be a daunting task when you can't see what you are doing very well.On the magnification factor, you can adjust the magnification of almost any telescope through the use of different eyepieces, so that is not a really important consideration when buying.It's also important to know that there are three different kinds of telescopes, the reflector, refractor and catadioptric.The refractor is the kind of telescope that most people think of when they think of telescopes.
It essentially has a large lens on the end of a barrel that focuses an image on an eyepiece at the back of the barrel. It's actually a very simple design, but it can also be more costly and bulky than the other styles of telescopes available. It's good for viewing the night sky and long range here on earth, but again, it gets very expensive to produce when you want to see deep space objects.The next kind of telescope is the reflector, and it uses mirrors to gather the light and focus it on a small eyepiece that is usually located on the side of the barrel. Mirrors are much less expensive to produce than the lenses used in refractors, so the reflector telescope is usually much less expensive as well. It is not suitable for terrestrial viewing here on earth though and it does lose a little light due to the use opf mirrors in it's design.The final style of telescope is the catadiaoptric which is really a blend of both refractors and reflectors, essentially taking the best of both designs with few of the drawbacks.
It is a good all around selection for telescope usage as it is a good choice for both terrestrial and astronomical viewing. They may not be what you expect a telescope to look like but their design is very modern and durable.Choosing any of these types and styles of telescopes will work depending on what you plan to use your telescope to do, and your budget. The important choice is to embark on a discovery of parts of the universe that you have never seen before..
Duane Brown - All About Binoculars provides free information, tips, and resources on binoculars, telescopes, rifle scopes, and spotting scopes, and how to find them at the very best price.all-about-binoculars.comElectrophysics? Expands Options for High-End Surveillance With the SunStar 600?
For demanding situations, high-end surveillance systems require more than just average low-light CCD cameras to provide nighttime images. When security is critical, facilities will rely on their systems to perform above par, no matter what the lighting conditions may be.
The Electrophysics SunStar 600 is an ultra-low light camera that incorporates a high-performance CCD, featuring advanced on-chip signal processing.
When integrated with surveillance systems, the SunStar 600 will assure that low-light and nighttime conditions will never be vulnerability. Imaging in near total darkness is now as practical as ever, as the SunStar 600 features an ultra-low light sensitivity of 0.00001 lux.
The on-chip amplifier overcomes the fundamental noise limitations of traditional on-chip charge to voltage conversion and off-chip video amplification stages.
The camera converts photons to charge in the image area during the integration time period, then transfers the...
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Nikon New Digital Camera a Hit with Consumers
(ContentDesk) October 4, 2005 -- Since the Nikon D50 won the Editor's Choice award from PC Mag in August, the votes have been coming in from consumers.
Almost one for one, they are giving this SLR Digital Camera an excellent rating.In a random search of 10 well-known sites sharing customer reviews of photographic equipment, including digital cameras, 8 out of 10 rated the Nikon D50 5 out of 5 or ?excellent'.
Most customers commented on excellent picture quality, ease of use, and comprehensive features.The D50's 6.1 Effective Megapixel Nikon DX Format CCD Image Sensor delivers vivid color and sharp detail with high resolution for great pictures and enlargements. High-quality Nikkor Optics include the new ultracompact and lightweight AF-S DX Zoom-Nikkor 18-55mm f/3.5-5.6G ED lens with a 3x focal length range of 18-55mm (35mm equivalent of 27-82.5mm)....
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Choosing The Right Digital Camera For You
Let's get something straight right out of the box. If you're looking to buy a new digital camera, you don't really have to be an expert in pixels and mega pixels and all that kind of stuff. If you expect to find that kind of deep technical discussion here, you're in the wrong place.Actually, there's a whole lot of stuff you don't really need to know before tackling the daunting task of choosing the right digital camera for you. First of all, forget all the high-tech jargon. It's mostly a lot of sales hype anyway.
Choosing a good unit is pretty simple really...pretty much all you have to remember is that the higher the mega pixel rating on the front of the camera, the bigger picture you can make without it breaking up into little chunks (called pixels) and most likely the more cash it's likely going to pry out of your pocket. Each model has an array of techno-widgets that go by different names but they all have the same basic focus, to help you take a better picture.I have a quick...
Choosing The Right Digital Camera For You
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Attention All Mothers, Daughters & Grandmothers Fashion Parade to Benefit Salvation Army in Modesto, CA
Attention All Mothers, Daughters and Grandmothers, we are seeking participants to be part of our wonderful fashion parade, contact Producer, Ann Pettibone for additional information at 209.526.2990 - WHAT: Our magnificent Mother/Daughter Dinner featuring mothers& daughters in our fashion parade and a fabulous luncheon for Grandmothers!- WHEN: Friday, May 6, 2005 Grandmothers Luncheon: 11 AM
Mother/Daughter Dinner
5 PM- WHERE: Modesto, California Restaurant (contact our office for location) 209.526.2990 - WHY: Fundraiser for Salvation Army! (Donation checks should be made payable to the "Salvation Army")There is no Charge for tickets to this event: attendees pay for food & beverages at the event!
We look forward to hearing from you soon and watching everyone in their beautiful outfits & hairstyles for the fashion parades.????????????????????????????????????????????Contact:
Ann Pettibone 209.526.2990????.
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Look Into My Eyes - New Webcam Technology
If a new webcam technology from Microsoft get the go-ahead, then instant messaging could get a whole lot more interesting.Currently under development at the Microsoft research labs in Cambridge, England, the new webcam, i2i consists of two lenses, which carefully follows an individual's movement.
Using an exclusively developed algorithm to cleverly blend what each lens is seeing, resulting in the creation of an accurate stereo "cylopean" image.All very technical, but for the 18.5 million people (source Microsoft) who regularly use webcams while they are using instant messengers, i2i means that it will appear as if users are looking into each others eyes. Antonio Criminisi, lead researcher of Microsoft's Machine Learning and Perception Group, said."We were able to come up with an algorithm that was able to take two images and capture a corresponding map in 3D.
Using this powerful technology, we can now synthetically create an image as if the person is looking straight...
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Protect Your Eyes With Biking Sunglasses
If you like riding your motorcycle or enjoy biking in general, you will really benefit from wearing biking sunglasses. Not only do the biking sunglasses protect your eyes from the sun and make it easier for you to see, but these sunglasses made for cycling or motorcycling also protect you from the wind and bits of dirt and dust that fly around.
Although biking sunglasses are mainly for fashion, they are essential for any biker that has sensitive eyes or wear contact lenses. Most cyclists wear goggles,
and motorcyclists wear helmets, but many of them also wear their regular prescription sunglasses as cycling sunglasses. Oakley was the first company to come up with designer sunglasses such as biking and cycling sun glasses.
They have truly polarized lenses to offer the best clarity of vision, which you need when you are on the road.
Since Oakley came out with its line of designer sun glasses for those involved in outdoor sports, many other...
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