Friday, November 18, 2011

Telescope Price In India

Telescopes Price Range In India Starts from Rs 500 and exceeds to any limit even more than 5 Lacs. You should expect to spend at least 10,000/- for a telescope which is capable to take you to Deep Sky Objects. There are various kinds of telescopes for different purposes:

1. Only Visual Observation
2. Tracking the Object
3. Astrophotography for Details log on to : http://www.spacearcade.in/faq.html

Based on the Requirement, Reflectors and Refractors are choosen. To go deep into the sky with huge Magnifications, MAKSUTOV and CASSEGRIAN are there to help you out.
The least expensive Telescopes in India which I recommend are Dobsonian reflectors like these:

Dobsonian Telescopes
Anything less than these is little more than a toy, and will not give long term satisfaction.
As to where to buy it, buy it from a telescope store, i.e. a store which specializes in telescopes. Otherwise you won't know what you're getting, and you won't get any help if you have a problem. Look under "Telescopes" in the Yellow Pages, or buy online from a Reputable Telescope Dealer, such as Space Arcade, Orion, OPT, Anacortes, Astronomics, High Point, etc.

Affordable Telescope Price in India

The Optical Telescopes increases the size of the distant objects, thus through a telescope you can see far away objects as If they were near. The objects are enlarged and are very clearly visible through the telescope.The optical telescopes increase the apparent size and brightness of the object that you are viewing. Telescopes are mainly used in the study of astronomy.
Telescope are of two types, refracting and reflecting. The refracting telescopes use a different lens. Like the name suggests this telescope uses the property of refraction of light. In this telescope, parallel rays of light pass through a convex lens that refracts.
It finally converges at a focus and is viewed by a small magnifying lens known as eye piece. Reflecting telescopes are made from mirrors and lenses. This telescope uses the reflecting property of light. Parallel rays of light converge at the center of a concave mirror and is magnified using an eye piece.
Telescope for sale, and all types of telescope accessories at economical prices. We compare on the internet  & observed that our telescope price are affordable as compared to others. There are telescope for all range at Telescope India which are routinely updated from time to time. We also have branded telescopes like Orion, Celestron also.
Feel free to browse the telescopes price India below (and check for even more deals). There are lot many astronomy products available in spacearcade like all quality telescope, all branded binoculars like Nikon, Celestron. We also have astronomy accessories, photography accessories, astronomy games & toys, and astronomy products available specially science students.
As you spend time on this site, you'll enjoy one of the richest sources of useful information about all types telescopes, binoculars and discover telescope price, binocular latest price. We have listed series of Dobsonian telescopes and Newtonian telescopes, Celstron telescope, Orion telescope. Spacearcade is the hub of astronomy products with latest telescope price India The dealers of telescope & binocular are available in all major Indian cities.
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How to Use Binoculars

Price of Binocular in India
The Binocular Telescopes or Binoculars are instruments used to see objects in far distances. They are two identically symmetrical telescopes placed side-by-side, lined in the same direction allowing us to use both eyes. Most are miniature in size to be placed in our hands, and others are not, the ones which are used in laboratories.
From bird watching to watching Sports in a stadium, binoculars help people enjoy their pastime more effectively. Binocular brings closer by magnifying far-off objects but you must know how to you use them correctly.

Instructions to Use:

1. Put the binocular strap around your neck so that it saves the binocular to fall down suddenly.

2. Adjust the barrels of the binoculars; all you need to do is move the barrels closer together or further apart as you hold the binoculars up to your eyes. If you have adjusted the binoculars correctly, you should not see a black "border" when you look through the eyepieces.

3. Locate the central focus wheel, usually in the middle of the two barrels of the binoculars.
Move the wheel slowly as you look at a particular object in the distance to get the best image for your eyes. You might need to re-focus from time to time from far off object to close object.

4. Fine-tune your viewing even more if you have a diopter focus mechanism on your binoculars. Not all binoculars have this focus element, which helps compensate for the difference in vision that you might experience in each of your eyes. The diopter focus adjustment wheel is usually on the right-hand barrel eyepiece.

5. Clean your binoculars after using them. A soft cloth is sufficient for the body of the binoculars. Treated tissue paper used to clean cameras and eye glasses is safe for wiping the lenses. Store binoculars in their carrying case when you're not using them.
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Instructions to Clean:
1.Blow dust off each lens with a can of compressed air.
2.Clean off remaining dirt and grease from each lens with lens cleaner and a lens cloth. When cleaning, begin at the center of the lens and swirl towards the outer ends.
3.Scrub crevices of the case with a soft-bristle toothbrush.
4.Wipe the casing with a slightly damp cloth.
Tips & Warnings

  • Lens caps should used while the binocular is not in use. Take the lens caps off (to prevent condensation), and use your binocular case to keep your binoculars clean and protected.
  • Cleaning lenses with harsh cleaners or rough cloths will scratch the lens.
Instruction align binoculars:

1.Set the view for the distance between the pupils(Eyes). Bend both the barrels until you can see one circle of view. It is called interpupillary distance (IPD).

2.To focus the binoculars, close your right eye and see an object with your left eye. Rotate the center focus wheel until the iObject is sharp and clear.

3. Open your right eye and close your left eye. Rotate the right dioptre (eyepiece) until the object is sharp and clear.

4.Both eyepieces are now in focus. You just need to use the center focus wheel to focus another object.

5.New user will have to repeat these steps to achieve alignment and focus the object.
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Tips & Warnings
  • For zoom binoculars, while at the highest magnification, move the zoom lever to increase or decrease the power to align binoculars.
  • If you wear eyeglasses, fold down the rubber eye-cups for comfort and viewing ease to align binoculars.

Basic Knowledge About Telescopes

A Telescope is to first attend a star party or an event or Join Astronomica where there are a few telescopes showcased. That will give you an idea of what a telescopes capabilities are and how binoculars compare with telescopes, or which is the best telescope to buy. In this article, we have tried to present some theoretical parameters that characterize a telescope, and a good understanding of these parameters will help you choose the right telescope for you.

There are quite a few important factors that determine the capabilities of a telescope:

Telescope Parameters
  •  Telescope type
  •  Aperture
  •  Focal Length
  •  Type of mount
  •  Motorization / Computer Control or GOTO
  •  Compatibility with standard eyepieces
  •  Cost

We shall now see how each parameter affects the capabilities of a telescope.
Telescope Type
There are many types of telescope which are classified as per the optics uesd. Telescope can be broadly classified as:
  • Refracting telescopes or Refractors
  • Reflecting telescopes or Reflectors
  • Catadioptric telescopes

Refractors use lenses to create an image of the faint / distant object. Reflectors use mirrors to focus an image of the object. Catadioptric Telescopes use a combination of mirrors and lenses to create an image.

What are the pros and cons of each type? We will discuss refracting and reflecting telescopes as they are popular.

Refracting Telescopes
Refractor Telescopes use lenses to have image of the Object. Combination of lenses gives you required mangnification (hyp). Refractors are usually expensive because a well-engineered combination of several lenses is required to create a good image. Creation of Lenses are expensive because it consumes time and also requires a lot of engineering.

Refractors suffer from a defect called “Chromatic Abbaration”. This defect can be minimised by using special techniques to manufacture lenses and this results in “Achromatic Lenses” which again makes it expensive. But to remove chromatic abbaration so that the image is more crisp , Other techniques are used to create more error free lenses. Thus, there are two types of popular refractors:
  • Achromatic Refractors
  • Apochromatic Refractors or ED Scopes
An achromatic refractor will gives you  a quality image. Apochromatic lenses produce the most crisp images, and are ideal for photography of celestial objects. Apochromats are more expensive than Achromats.

Refractors are  not preferred for visual observations because as the aperture increases the cost increases exponentially, so only small aperture telescopes are used for visual observation to view planetary objects and close by objects.

Pros:
  • Very crisp image
  • Are usually portable
  • Ideal for astrophotography because the light gathered is more as compared to  Reflectors.

Cons:
  • Good apochromatic refractors are of huge cost.
  • Small aperture Refractors can view only planets and bright celestial objects only.
  • They are expensive

Reflecting Telescopes
Reflecting telescopes produce an image by using combination of mirrors.

Newtonian reflectors are the most popular for visual observing of distant celestial objects.
Newtonian ReflectorsThis is the most popular design for visual observing. Newtonian reflectors have two mirrors - a "primary" concave (actually parabolic) mirror and a "secondary" flat mirror. The primary mirror gathers the light from the celestial object and focusses it. The secondary mirror only changes the direction of the light, so that it is suitable for viewing. Big Aperture Mirrors are economical as compared to big aperture Lenses and the cost reduces heavily. Newtonian reflectors are the most suitable for visual observing and can also be used for Photography.

Pros:
  • They are cheaper
  • They come in a large range of apertures, starting from small 3-inch apertures to more than 30-inch aperture.
  • They are ideal for visual observing
  • They can also be used for Astro Photography.
  • Desired Magnifications can be obtained by using various focal lengths.

Cons:
  • Image quality usually not as good as Apochromatic Reflectors
  • Are usually designed to produce inverted images
  • Collimation is not easy, which requires skill and technique to learn, but it is not that problametic, it can be learned easily. Various collimating tools are available to help in collimation.

Catadioptric Telescopes

This design is usually preferred for astrophotography of small celestial objects. This design accomodates long focal lengths in a shorter tube length, making it less bulky. A favourite amongst astrophotographers.

To summarize:Schmidt Cassegrains are suitable when you want large magnifications, especially for photography.

Pros:
  • Large magnifications with small sizes
  • Ideal for photographing small objects.
Cons:
Expensive than Reflectors

Aperture

The clear aperture of a telescope is the diameter of the objective lens or primary mirror specified in either inches or millimeters (mm). The larger the aperture, the more light it collects and the brighter (and better) the image will be. Greater detail and image clarity will be apparent as aperture increases. In astronomical telescopes as Telescopes Mumbai, Binoculars Mumbai India Telescope in MumbaiThe light-gathering power is more important than magnification.

The light-gathering ability of a telescope varies as the square of the diameter of its aperture. Which means that a 8" telescope is 4 times more powerful than a 4" telescope, which in turn is 4 times more powerful in Telescopes Mumbai, Telescopes India Telescope in Mumbai (Maharashtra)

To summarize: Larger aperture helps you view objects more clearer by gathering more light from teh object.

Pros:
  • Larger aperture show more detail
  • Larger aperture increases contrast
  • Larger aperture shows fainter objects, more distant galaxies
  • Large aperture is ideal for deep-sky observing (seeing galaxies, nebulae, star clusters etc.)
Cons:
  • Larger aperture costs more
  • Larger aperture makes telescopes bulky

Focal Length

Focal length, usually measured in mm, refers to the focal length of the primary optical element (objective lens in refractors, primary mirror in reflectors). Larger focal length gives more magnification with the same eyepiece. Smaller focal length gives more field-of-view with the same eyepiece, but less magnification.

To observe planets in great detail, an objective with a long focal length and high optical quality is preferred. To observe deep-sky objects, an objective with a short focal length is preferred.

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Price of Telescope in India