Company Profile
Jiangxi Phenix Optical Technology Co., Ltd. is the first listed company in the Chinese optical industry (SSE code: 600071), which was successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employs about 3300 people.
We offer exclusive services you can't find with other companies. We have developed a unique service system designed to assist you in building your own microscopes. And of course our team members are always standing by to help you, Chat, Phone, or Email.
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Professional Team
We offer exclusive services you can't find with other companies. We have developed a unique service system designed to assist you in building your own microscopes, And of course our team members are always standing by to help you, Chat, Phone, or Email.
Factory
Jiangxi Phenix Optical Technology Co., Ltd. is the first listed company in the Chinese optical industry (SSE code: 600071), which was successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employs about 3300 people.
Our Certificate
We always feel that the success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO 9001, ISO 14001, ISO 45001 and SGS authentication, and our stringent quality control system.
Production Equipment
We have a huge production workshop and production equipment, under the premise of ensuring quality can quickly complete the order production.
Astronomers observe distant cosmic objects using telescopes that employ mirrors and lenses to gather and focus light.
The size of the main mirror or lens determines how well a telescope can collect light. The larger a mirror or lens, the more light it collects, and the better its ability to detect fainter objects.
A telescope using a lens for its main optical element is called a refracting telescope. Like eyeglasses, the lenses bend, or refract, light passing through them. The first telescopes, developed in the 1600s, were refractors, as are many backyard telescopes today.
But very large lenses make refracting telescopes large and heavy, which makes them difficult to use in space.
A telescope that uses a mirror as its primary optical element is called a reflecting telescope. Large mirrors can be made thinner and lighter than lenses of the same size, which makes reflecting scopes ideal for sending to space.
Benefits of Telescope
Affordable and Available
Telescopes use mirrors or lenses or both. They work with visible light which is the easiest to observe. The materials and the mechanisms are among the simplest. Optical telescopes are cheaper to make and hence more affordable for buyers. The cost and also the nature of its use ensure it is a commonly used device. In other words, they are widely available.
Easy to Use
Telescopes are very convenient to use. They used to be very large before but today you can get small portable ones. It is true that the smaller ones aren’t amazing because they capture very little light so the viewing pleasure is adversely affected. However, you can carry one around, use it anywhere or anytime. There is no restriction to carrying or using telescopes. You would need licenses for some types of telescopes.
Visual Treat
Telescopes are a visual treat. You would get to see amazing live pictures or images of space, you can focus on a few stars or a cluster, you can look for specific planets or other celestial objects. You can use optical telescopes to capture images and you can then frame these photos for your family and friends to see. Other technologies used in telescopes offer images that may not mean much to most people.
Type of Telescope
Refractor Telescope
The refractor telescope is likely what comes to mind when one thinks of a telescope. Just as its name suggests, a refractor telescope works by refracting, or bending, light in order to form an image.
Many entry level refractor telescopes come on a simple to operate mount, known as an Alt-Azimuth mount, and make for great first telescopes. They also require little to no maintenance, making them ideal for those new to the field or who want something convenient and easy to set up.
Reflector Telescope
In contrast to the refractor telescope is the reflector telescope, invented by Sir Isaac Newton. Reflector telescopes work by utilising mirrors to reflect light that the telescope gathers to form an image at the eyepiece.
Reflector telescopes are the most cost effective telescopes available, as mirrors are much easier and more inexpensive to produce. As such, large aperture reflector telescopes can be manufactured for relatively far less than a refractor telescope of equal aperture. For those seeking to get the most out of their astronomy experience on a budget, a large aperture reflector telescope is the way to go.
Dobsonian Telescopes
Perhaps the category that looks least like a telescope, but the one that we would recommend to anyone looking for their first telescope or seeking something with a large aperture, ease of use, and at an affordable price.
The Dobsonian telescope is actually just a reflector telescope, usually fairly large, which sits on top of a simple to operate, sturdy, inexpensive mount that was designed and popularised by John Dobson. This brings with it certain advantages and disadvantages.
Telescopes are optical instruments that focus light in such a way that distant object look magnified. Just one year after discovery of first modern telescopes, Galileo Galilei managed to create small telescope that had 30x magnification.
Anyone who wants can create simplified version of telescope can do that using mostly home supplies – two magnifying glasses , cardboard tube, duct tube, scissors and a ruler. To determine the perfect distance between those two lenses, take the larger lens and put it away from yourself, and then place smaller lens between it and your eye. Move the lenses and position of your head back and forward until the image that you see through smaller lens is clear.
Another tactics is to take the tube and tape up smaller lens to one side of the tube. Then you need to look through smaller lens and tube beyond it, and take larger lens and manually position it in front of the tube. This process is little complicated, but it requires minimal effort for assembling the materials.
Scientific telescopes demand much more advanced hardware and materials, starting from of course specialized lenses and mirrors that are optimized for telescopes. Main lens of the telescope has to be very pure, usually as pure as 99.9 % of silicon and just 0.1% of impurities. The glasses are separated into two groups – crown glasses and flint glasses (lead oxide). All glass components are made in furnaces that reach 1550 °C, which ensures that all air bubbles are ejected from it. To make glasses anti-reflective, they are coated with magnesium fluoride. Mirrors that are used are not as pure as glasses, but are made to be very accurate and coated with aluminum which provides best reflectivity.
One of the most important elements of the production of professional telescopes is quality control, which touches each step of the manufacture. Accuracy of lenses and mirrors is especially closely monitored, including their grinding, thickness, diameter, and curvature . Tolerances for curved lens are usually plus or minus of 20 micrometers, while flat lenses (mirrors) are about plus or minus 1 micrometer (0.00004 inches).
Important Properties of Telescope
The aperture is the diameter of the telescope’s primary lens or mirror, which gathers light. A larger aperture allows the telescope to collect more light, producing a brighter and sharper image. It also improves the telescope’s ability to resolve fine details, making distant objects appear clearer.
The distance between the telescope’s lens or mirror and the point where light rays converge to form an image. A longer focal length results in higher magnification but a narrower field of view. Conversely, a shorter focal length provides a wider field of view but lower magnification.
Magnification is how much larger the telescope makes objects appear. It’s determined by dividing the telescope’s focal length by the eyepiece’s focal length. However, the aperture typically limits the maximum useful magnification, with higher magnifications being less effective if the aperture isn’t large enough.
This refers to the telescope’s ability to distinguish between two close objects and see fine details. The larger the aperture, the better the resolution, allowing the telescope to see finer details in distant objects.
This is directly related to the aperture size; larger telescopes can gather more light, allowing them to observe fainter objects. This is crucial for studying distant stars, galaxies, and celestial bodies.
The mount supports the telescope and allows it to move and track objects in the sky. A stable and accurate mount is essential for keeping the telescope pointed precisely and tracking objects as they move due to the Earth’s rotation.
The quality of the lenses or mirrors and the precision of their shape greatly affect the quality of the images produced. Flaws in the optics can lead to aberrations that distort the image.
Application of Telescope
Stargazing
Binoculars are a set of optical telescopes.
Casual stargazers use optical telescopes to view the universe up close. If you see a telescope resting on a tripod in someone's home, most likely it is a refractor, as they are among the most compact optical telescopes. The spy glass, or handheld refractor telescope, is one of the first optical telescopes.
Photography
Photographers sometimes use optical telescope cameras with catadioptric lenses.Many cameras with zoom are essentially optical telescopes, as the mechanisms behind many cameras' zoom lenses are the same as those behind the optical telescope--and both have the same job of magnifying distant objects.
Astronomical Research
Observatories house optical telescopes for astronomical research.
Researchers use sophisticated optical telescopes to study the universe in detail. Many observatories house famous optical telescopes. For instance, the large refractor telescope at the United States Naval Observatory in Washington, D.C., discovered Mars' moons Phobos and Deimos, according to the Space Telescope Science Institute (STScI). Perhaps the most famous optical telescope is the Hubble Space
Components of Telescope
Objective Lens or Primary Mirror:
It is the main optical component of a telescope. In a refracting telescope (one that uses lenses), the objective lens is at the front of the telescope and gathers light from the object being observed. In a reflecting telescope (one that uses mirrors), the primary mirror is located at the back of the telescope and reflects light to form an image.
Eyepiece:
The eyepiece is a small lens or set of lenses that magnify the image formed by the objective lens or primary mirror. It allows you to view the magnified image and is usually located at the telescope’s top end.
Focuser:
The focuser is a mechanism that allows you to adjust the position of the eyepiece, bringing the image into sharp focus. It can be a rack-and-pinion system or a different type of focusing mechanism.
Mount:
The mount is the support structure for the telescope. It holds the optical tube assembly (OTA) and allows for smooth movement and tracking of celestial objects. There are two main types of mounts: alt-azimuth (up-down and left-right) and equatorial (following the rotation of the Earth).
Tripod:
The tripod is the stand that supports the mount and keeps the telescope stable. It typically has adjustable legs to set the desired height and level the telescope.
Finderscope:
A finderscope is a smaller, lower-power telescope mounted on top or alongside the main telescope. It provides a wider field of view, making locating objects in the sky easier before focusing on them with the main telescope.
Diagonal (in refracting telescopes):
The diagonal is a mirror or prism between the objective lens and the eyepiece in a refracting telescope. It redirects the light path by 90 degrees, allowing for more comfortable viewing when the telescope is pointed high in the sky.
Tube:
The tube is the cylindrical structure that houses the telescope’s optical components. It protects the optics from dust, stray light, and other environmental factors.
Aperture:
The aperture refers to the diameter of the objective lens or primary mirror. It determines the light-gathering ability of the telescope. Larger apertures collect more light, resulting in brighter and more detailed views.
Collimation Screws:
In reflecting telescopes, there are usually collimation screws or adjustments on the primary or secondary mirror to align the optical components for optimal performance.
How To Care For Your Telescope
Blow Off Dust And Debris
To clean off loose dust and particles that accumulate on your telescope, use compressed air. The pressurized air minimizes the risk of scratching the lens and the mirror.
Clean Of Smudges And Remaining Particles
Use a cleaning solution to remove any remaining dirt and debris, as well as smudges. Mix together 50 percent pure alcohol and 50 percent distilled water. Using higher amounts of alcohol can dissolve the cements that hold the optical elements in place, as well as the lacquers and non-metallic components if the solution gets into the wrong part of the telescope.
Keep Moisture At Bay
Telescopes need to be kept dry. Moisture can damage and affect the quality of the viewing pieces and the usability of the device. This is particularly important for refractor and Schmidt-Cassegrains telescopes.
To keep your telescope dry, use a dew shield. In damp locations, a dew heater could also be used. If the telescope does become damp, leave it uncapped until it completely dries out to prevent oxidization.
Store In A Cool, Dry Location
When your telescope is not in use, make sure to store it in a cool, dry location. Avoid spaces with high humidity levels where condensation can develop. Locations that are not well ventilated or insulated should also be avoided.
Jiangxi Phenix Optical Technology Co., Ltd. is the first listed company in the Chinese optical industry (SSE code: 600071), which was successfully listed on the Shanghai Stock Exchange in 1997. It covers an area of about 333,000㎡ and employs about 3300 people.
Our Certificate
We always feel that the success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO 9001, ISO 14001, ISO 45001 and SGS authentication, and our stringent quality control system.
FAQ
We're professional telescope manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale telescope for sale here from our factory. For price consultation, contact us.