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Looking for Kowa Binoculars? Then have a look below to see what we have on offer, stock changes daily
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KOWA PROMINAR 7 x35 VINTAGE BINOCULARS with Leather Carrying Case NEW
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Kowa 20 x120 Observation Binoculars Refurbished and Highly Polished
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Binoculars or binocular telescopes, are really two identical symmetrical telescopes mounted together. Because they point in the same direction, they allow the viewer to see a far greater distance than with the naked eye. A binocular has a big advantage over single telescopes as you can see through both eyes and they are easier to hold steadily with two hands.
The Optics
The objective lens diameter generally determines how much light is allowed while the magnification will display the ratio of the focal lengths. An example is 8 X 35 (eight times magnification and 35 mm objective diameter) or 7 X 50 (seven times magnification and 50 mm objective diameter). In these two examples, the first one has a higher magnification ( 8 over 7) but allows less light (35 mm is smaller than 50 mm) than the second one. If you are requiring binoculars for low light use, buy the biggest objective diameter.
Lens Construction and Coatings
Unfortunately, in any optical instrument used for images (e.g. a telescope, camera, microscope, etc.) light is often reflected and distributed into the view. This can reduce contrast. Reflection can be reduced by adding coating to the optics. Some of the newest techniques are phase-corrected prism and dielectric prism coatings.
Binoculars designed from the Porro prism design are generally brighter than a roof prism design but newer technologies are reducing the differences (the Porro prism binoculars still have the highest value at a lower price).
Choosing binoculars
Roof-prism models are generally lighter and smaller than Porro models, but you will usually pay more. If the binoculars are sealed and filled with nitrogen gas, they will not cloud with condensation.
Manufacturers Include
Bushnell Performance Optics
Canon
Docter Optik
Eschenbach Optik
Fujinon
Kowa
Leica
Leupold & Stevens, Inc.
Minolta
Miyauchi
Nikon
Olympus
Optolyth
Pentax
Russian Military Binoculars
Sicong
Steiner
Swarovski Optik
Vixen
Vortex Optics
WDtian
Yunnan State
ZeissTo read more on binoculars, visit electronicsme
Your binocular site for the birding and outdoor enthusiast.
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Looking for Celestron Powerseeker? Then have a look below to see what we have on offer, stock changes daily
lot of difficulty in using the setting circles help !!! please?
i own a celestron powerseeker 127eq. i am facing a lot of difficulty in using the setting circles i.e. the R.A. and Dec circles to align the telescope with heavenly objects above. any kind of advice or name of a site which helps such as a telescope tutorial or such would be greatly appreciated.
More details of the precise problem you are having would help since it is quite a broad area. This article: http://www.skyandtelescope.com/howto/visualobserving/3304206.html?c=y&page=1 covers the process in more detail than anyone would be willing to do so here although the initial introduction is far too pessimistic in my opinion.
If your polar alignment is good then you can navigate over large portions of sky accurately enough that the object in question will at least be in the field of a low power eyepiece: the problems arise when people demand to the degree accuracy from their setting circles when their polar alignment is several degrees out.
However it also has to be said that the setting circles on your scope are not particularly good examples. Good setting circles tend only to be fitted to mid range to high end mounts these days - you would need to spend twice as much on the mount alone as you did on your complete set up.
The key thing to note is that the RA axis will drift away from the correct value as the sky rotates during the course of a night. Most people advocate regularly correcting the RA axis because of this but I always try to avoid it. Instead I adjust the scale so that it will give the correct reading at midnight. Then every time I need the circles I look at the time and calculate how long before or after midnight it is. The difference between sidereal and solar days is small enough that it can be disregarded, so I add or subtract that figure from the RA value I am looking for. In this way I calibrate my RA scale only once.
As for Bullseye's comments they are so wide of the mark I am hesitant to even call them wrong: it is akin to responding "Belgium" when asked "What is 2+3?" Dobs do not have traditional setting circles - they are fundamentally incompatible with polar circles and usually lack even altazimuth circles. The setting circle problem is one of the key disadvantages of the Dobsonian mount.
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Setting Up Celestron PowerSeeker 127EQ
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Looking for 10x50 Binoculars? Then have a look below to see what we have on offer, stock changes daily
Other than M31 what galaxies are generally visible through 10x50 binoculars in the Northern Hemisphere?
I have located where Triangulum Galaxy (M33) should be but even on a very clear night is an extremely faint blur and I am not 100% sure I am not being deceived by a far distant star. Would any of the Virgo Cluster galaxies appear brighter?
One last thing - I am struggling to discern Jupiter's moons. With my binos stabilised the best I get is a slight bulge to one side of the disk which might be caused by an imperfection in focussing.
The key is to get to a very dark sky site. Then, m51, m81, m82, and maybe m33 should be visible, or at least detectable. You just might be able to detect m100 or m86 in the Virgo cluster. These objects should be as high in the sky as possible - so you're not looking through so much atmosphere. A planetarium program will tell you when they transit.
What i mean by detectable is that if you've found the right spot, and there's a bright patch where the galaxy should be, and you move your optics, the bright patch moves with the sky.
Focus is very important in seeing faint things. You can discover this by yourself. Get some faint star into sharp focus. Then defocus it. It should disappear.
Do you have a stable tripod?
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Sirius Stargazing: Introduction
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What to take with limited allowances for travel, in vehicles and/or light aircraft. The first thing you should do is invest in at soft bag. Your luggage will be squeezed into a limited space in your safari vehicle and a hard suitcases just will not do. Make sure the bag is plain, hardwearing with a sturdy zip.
We are often asked what binoculars to bring on safari we recommend the following: - a power x7 or higher. Look for any of the following: 7x42, 8x42, 10x42, 8x50, 10x50. It is the second number that is critical. Less than 30 and image quality is seriously compromised. Higher than 50 and you will have a hard job holding them steady. If you can afford Zeiss, Leica or Swarovski, all the better, but Canon, Nikon and Opticron do very good reasonably priced glasses.
[Recommendations for Binocular: - Magnification: 8 x 42 - Field of View: At least 330 ft at 1000 yards. - Exit pupil size: 5.25 mm or more Eye relief: 18 or more - Prism and Coating: BAK-4 prism and Fully Multi-Coated surfaces, Weight: Not more than 30.1 oz. Lbs]
MAKE A PLAN AND STICK TO IT! creating a list - like an architect planning a building, so must you plan the contents of your suitcase. Set aside the pieces you intend to bring and ensure that they are clean and ready to be packed
Jewellery - don't take what you don't want to lose, and leave behind the flashy pieces that could attract thieves. Keep makeup to a minimum to save space, and leave the perfume behind when scented lotions will work just as well. When it comes to toiletries - travel kits are always the answer. Having a travel kit perpetually stocked in a waterproof case will save in packing time before the trip and aggravation [and mess] after arrival.
A Kenyan I know is an expert packer - he will spend time packing using every space possible in you soft bag. He ensures everything is clean and ironed. Once folded he irons them flat - sometimes rolling but if they are ironed and folded correctly rolling is not always necessary.
Clothing To Pack for a Safari:
2 pairs khaki cotton pants (jeans are hot and uncomfortable)
2 pairs sturdy shorts
2 long sleeved light coloured shirts (for evenings help to keep the mosquitoes at bay).
1 light sweater or sweatshirt
1 lightweight, waterproof windbreaker
1 or 2 pair sturdy walking or hiking boots or running shoes [thick soles are essential as when walking in the bush there will many long sharp thorns]
3-5 short-sleeved shirts or T-shirts
5 changes underwear and socks
1 hat with a brim (baseball caps might cover your nose but not your ears and neck).
Please travel light. You should also bring a day pack to carry any essentials you might need whilst on safari. On safari most people wear shorts and a T-shirt during the day and put on long sleeved shirts and long pants in the evening for warmth as well as protection from mosquitoes.
Khaki, brown, olive and beige colours are best for and safaris and game walks.
White is not a suitable colour for these activities; they will get dirty with red/brown dust within minutes.Fleece or sweater and a windbreaker for game drives, because it is highly possible that you may go out on a hot day, but be faced with a chill evening on your return. Some areas have a steep temperature gradient, i.e. Very hot days and very cool nights.
Remember that layering your clothing will keep you warmer than relying on one thick item.About the Author:
The site
http://www.tanzania-info.co.uk
has contacts and information of National Parks and timetables for Zanzibar Ferries, flights and Buses in Tanzania - and
http://www.betheladventure.co.uk
has safari information. Use responsible tourism to make a difference to the countries and peoples you visitArticle Source: ArticlesBase.com - Packing For An African Safari
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Find Big Binoculars information and products
binoculars for a new bird watcher?
my work has offered me a pair of new binoculars i dont want them if they are going to be to big for watching birds. (ill choose a different gift for my anniversary) heres a link to the binoculars. does any experianced bird watchers have any advice about this? i can buy a different pair if these are not good, if these are free and good though i would like to get them. http://www.opticsforyou.com/product-3513-0-1-1.html
These really are not suitable for you. Unless your into extreme bird watching.
I have a pair almost just like those. Keep them mounted on a tripod.They actually are much to heavy to carry
You will be better off getting a smaller –say 8x20. Compact ones. Easy to carry,and easy to focus. Not expensive either.
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Article Referencing Big Binoculars
Binoculars are better for viewing general objects than telescopes because they are basically two telescopes smacked together which allow for greater depth perception.
Binoculars have been around since the 1600's century after telescopes have been invented. People use to connect two telescopes together and in able to see with both eyes.
During the 1800's a porro prism binoculars were created that enabled greater depth perception and also spaced the eye pieces wider apart. These binoculars were more powerful than the standard ones before then.
The cheapest binoculars are porro prisms that create detailed images and good color views. These are big and wide and sometimes need to be re adjusted to work properly.
A more costly pair of prism binoculars are roof prism binocular. These binoculars are lighter and smaller but lose some light. An advantage to them is that they usually never have to be re-adjusted. These binoculars weigh much less. Many roof prism binoculars have coated lenses.
Coated Lenses help make a bright image by reducing the amount of light that reflects. With out this, the binoculars will create a hazy picture.
Most Binoculars are focused by moving a round wheel that focuses both eye pieces at once. More complicated binoculars require independent focus which requires each eye piece to be focused separately.
More expensive binoculars have image stabilization which dampen sudden movement. This means that binoculars with high magnification can be hand held when normally they couldn't. This feature is very expensive.
Coin-op binoculars can be found at many tourist attractions. These are always on a tripod or bipod.
Military Binoculars are at a magnification 7x. Military binoculars are tougher than other binoculars and they also use independent focusing because it is more sturdy . Most military binoculars also have special features that help it work while wet. Boating binoculars are meant to be easier on the eyes so you don't get sea sick.
Astronomy Binoculars help you to view far away elements in the sky from far away. There are a lot of different planets like Pluto that can be seen with binoculars. It is nice to look with a lower powered binoculars because they have larger field of view.
I hope that you will come to see how great looking at the stars can be with binoculars. No matter what kind of binoculars you chose to buy, the most important thing out there is that you enjoy what you are using them for. You can still have fun with a $100 pair of binoculars if you enjoy looking at the stars with your kids. Teaching your kid's about the big dipper is something you will never forget.
About the Author:
Matt Seweryniak has as large amount of info at Swift Binoculars Audubon .
Article Source: ArticlesBase.com - How to Chose The Best Binoculars For You
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Want to find Field Binoculars at the best prices? or simply find Field Binoculars information and tips? Then read on to see what's on offer. We have constantly changing stock, so you should find what you're looking for.
Field Binoculars Q and A's
What is the value of Carl Schweitzer binoculars? 7X50, Field 7.1?
Binoculars have original case. Between the large lenses is code E.O.C. in triangle. They are in great shape.
This is difficult. A quick look at eBay shows nothing for this brand. Recent sales of 7x50 vary widely. Some items of historical or specialist interest have sold from $250 up to $850, with one pair selling for over $3500. The great bulk, however, sell for under $100.
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It's hard to track game if you can't see it. Therefore, one of the most important accessories for hunters is a good pair of binoculars.
While there are literally thousands of different models of binoculars on the market, not all are suitable for hunting. Most are not rugged enough for the woods, marsh or field. Many are not suitable for low-light conditions. Some are too powerful, and others not powerful enough.
Here are some factors you should consider when choosing hunting binoculars.
Binocular Construction:
Hunting is a rugged sport that puts demands on your equipment, including your binoculars.
Hunting binoculars should feature some sort of rubberized exterior armoring to protect them from being damaged if dropped or bumped against trees, brush, rocks and so on.
Because you'll likely be hunting in extreme weather conditions, you'll want a pair of binoculars that can withstand such conditions. They should be waterproof, and the lenses should be fog-proof. Another feature to consider are the lens caps. Binoculars with attached caps will protect the lenses, but not require you to fumble in your pockets looking for lens caps if it starts to rain or snow.
Roof prism binoculars are popular with hunters. Light enters the front (objective) lenses, and is then redirected through the roof prism to the rear (ocular) lenses. The roof prism design allows the binoculars to be more compact than binoculars that transmit the light directly from the objective lenses to the ocular lenses.
Binocular Lenses:
When it comes to lenses, bigger is indeed better. The larger the objective lens, the more light the lens transmits to your eyes. If you like to hunt at dawn or dusk, you'll want the largest objective lenses you can get. The objective lens size is the second number in the manufacturer's description of the binoculars. For example, 10x42 binoculars have 42 millimeter objective lenses. Objective lenses for hunting binoculars range from 40 millimeters to over 60 millimeters in diameter. Again, bigger is usually better.
When choosing hunting binoculars, look for phase corrected lenses. Phase correction is a coating on the lenses that increases the sharpness, contrast and color saturation. When you're trying to spot game that blends in with its surroundings, you need every edge you can get.
Another feature to look for in hunting binoculars is nitrogen-filled optics. The nitrogen inside the binoculars displaces oxygen, so that moisture cannot form inside the optics, fogging the interior lenses.
The rear (ocular) lenses are another thing to consider when choosing hunting binoculars. If you're like most people, your eyes aren't identical when it comes to focus. Therefore, you'll want to look for binoculars that allow each ocular lens to be adjustable for focus.
Consider, too, the amount of eye relief the binoculars feature. This is the distance from the lens to your eye at which you can still see the view. If you wear prescription glasses or sunglasses while hunting, you'll need some eye relief. Also, binoculars with good eye relief allow you to bring them up to your eyes quickly, without having to get your eyes perfectly aligned. 15 to 20 millimeters of eye relief is generally considered optimum.
Binocular Magnification:
The first number in the manufacturer's description of binoculars is the magnification. A pair of 8x42 binoculars magnifies the view by eight times.
For long-distance hunting, such as prairie dog hunting, a high magnification may be desirable. But for most types of wood/field/marsh hunting, too much magnification is undesirable. You'll be viewing too small a portion of the area you're scouting.
8x or 10x magnification is generally considered ideal for most hunting applications.
Many manufacturers offer zoom binoculars, which allow you to vary the magnification. In practice, though, zoom binoculars aren't always ideal for hunting. They tend to be more fragile and weigh more than fixed-magnification binoculars. Also, as mentioned previously, high magnifications restrict your view of an area.
The amount of area binoculars allow you to view is called the "field of view." The field of view (FOV) is referred to in degrees, or in feet at a specified distance. For example, 6 degrees of field of view is common. Expressed in feet, a pair of binoculars with 6 degrees field of view will allow you to see 314 feet of area at 1,000 yards.
Other things to consider when choosing hunting binoculars:
Weight is a consideration for any hunting equipment, including binoculars. 32 ounces may not sound like a lot of weight but, after a full day in the field, it will feel like it. Most binoculars made for hunting weigh around 20 ounces.
When selecting your binoculars, pay attention to the warranty the manufacturer offers. You're going to be exposing your binoculars to some pretty rough treatment, so you'll want the best warranty you can get. Many manufacturers offer warranties that last twenty years or more. Some even offer lifetime warrantees.
Properly cared for, a good pair of binoculars will serve you for decades. When you consider the cost of a single hunting trip, quality $300 to $500 binoculars are a great investment.
About the Author:
Richard A. Baker is the publisher of
Gunshopfinder.com
. More information about binoculars by Richard A. Baker can be found at
Hunting Binoculars
. © 2007 Gunshopfinder.comArticle Source: ArticlesBase.com - Choosing Hunting Binoculars
