Three Types of Telescopes - What are the Advantages
Refractors, Newtonian reflectors and Catadioptrics are the three main types of telescopes. All these different types have the same purpose, but each telescope design does it differently. Collecting light and bringing it to point of focus so it can be magnified and examined with an eyepiece is their goal.
Of the different types of telescopes the refractor is the telescope most people think of when they think of astronomy. This type of astronomy telescope is easy to use and reliable due to the simplicity of design. It requires little or no maintenance. Its great for looking at the different types of lunar, planetary, and binary stars.
Newtonians are a type of telescope, which is also known as catoptrics. This type is different from the other telescopes because it has the lowest per inch of aperture compared to refractors and Catadioptrics, because lenses are more expensive to produce than mirrors, especially in medium to large apertures. Newtonians deliver very bright images and are low in optical aberrations.
Catadoptric telescopes are the most popular type of instrument, with the most modern design, marketed throughout the world in 3 1/2 and larger apertures. Its very good for looking at different planetary, lunar, and binary stars. If you like to take photos with your telescope this type of instrument is excellent for deep sky observing or astrophotography with fast films or CCD's.
Copyright © JJ PERSISTENT PUBLISHING, INC.
PERMISSIONS TO REPUBLISH: This article may be republished in its entirety free of charge, electronically or in print, provided it appears with the included copyright and author's resource box with live website links.
Jeremy Hier is the Business Manager and Webmaster of Best Telescope Guides Jeremy Hier is a freelance writer and regular contributer He likes to offer his advice and tips to consumers looking to purchase meade telescopes and celestron telescopes
This RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news
Brexit creates big challenges for government science advisers. Can universities help? - The Guardian
Why Did the National Science Foundation Propose Slashing Its Own Social Science Budget? - Pacific Standard
Saving Private Ryan in Iraq - Stop the Bleeding
I propose that we give soldiers an ultra thin material, which will either be an undergarment to their uniform or incorporated as a liner within that uniform. This liner in the uniform will be laced with a Blood Coagulation Product.
Environmental Eco-Terrorists Must Be Stopped
Eco-terrorists assume some how they are helping the environment, by causing news worthy events and starting forest fires or burning down developments. Yet in doing so they cause air pollution and kill animals.
Life on Mars, Warm Water Under our Ice Caps, Evidence, Microbes under Our Feet
Well many people out there are asking is there really life on Mars? Our Thinking Group has been asking not if, what type?An article I remember reading and article in Astronomy Magazine back in 1996 that read was there life on Mars and it was an article about a meteorite that landed here on Earth and it was found in 1984 in Antarctica in the Allen Hills ice fields, like I even know where that is? It had bacteria fossils and remains of bacteria that lived about 3.6 billion years ago and the meteor appeared to have come from Mars.
Saving People in Disaster Crisis, Concept
So often when we see huge Natural Disasters there are many people killed, but for everyone who perishes there are 5-10 people injured; many very seriously. So often too the region of the world were the disaster occurs does not have enough hospital beds, medical professionals or the right equipment needed to help save those lives.
Gulf of Mexico Formed by a Rotating Hurricane Trapped in the Region
Recently in a coffee shop I met a gentleman who had dismissed himself from University Level Study and had developed some interesting theories on land formations of the Americas. His theory included a concept that the Gulf of Mexico some 2.
Smart Dust and Virtual Keyboards
Using Smart Dust which is sprinkled onto a rock it maybe possible to type information into a small computer or PDA very rapidly. This could be quite handy for many things such as; Search and Rescue, Fire Fighting, Civil Air Patrol, Hikers and Mountain Climbers and of course military applications.
Bio-Rhythm Disruption Frequency Identifier for Human Intentions
It appears we have found many identifiers for Bio-Metrics to identify people. In this new age of International Terrorism with bad guys trying to get Pilot's Licenses, HazMat Driver's Licenses, get onto airlines, step onto buses and sneak over our borders we need a fool proof system.
Mini-Robots, Motherships, Swarm Strategies, Wasps, Ants, Organization and Delivery
Robots are for every one. Tech TV now host Battle Bots which is a big hit with viewers and draws crowds as big as WFB Wrestling.
Tree hugging is a thing of the past. It is not just about the trees anymore.
MP Apprehension of High Strung or Drunken Soldiers
Recently scientists have discovered the hydrogen sulfide gas caused mice to go into spontaneous hibernation. The genetic similarities to the mammalian class humans belong to includes these rodents as well.
Acoustic Transducers and Light Waves for VSTOL, a Concept
Is it possible to use many acoustic transducers underneath an aircraft in a crisscross fashion to make the air much thicker. Almost like a platform that a VSTOL aircraft using low pressure could use to push off of? Although the amount of energy to be required to do this might be substantial; it seems to be possible.
Natural Gas Cost Increases; Want to know more?
A Thorn in the Side for American Business and Consumers - Natural Gas Shortages and Cost IssuesNatural Gas Issues and costs are tough on Americans and American Business. There have been many incentives for businesses and industries to use Natural Gas to assist in clean burning fuel.
Droughts and Salt Water Canals Random Thoughts
We need solutions to our drought crisis in this country. There are simple but expensive solutions; for instance; Desalination, salt water rivers and conservation strategies.
Reverse Osmosis and Deionized Water Filtration
Let's face it if you are in a business needing de-ionized water or reverse osmosis water you are always concerned about the quality of your water. I know as a mobile detailing business that when we have ultra clean water in our tanks we are a happy camper.
Cord Blood and Its Uses
Cord blood is the blood left in the umbilical cord and placenta after the birth of the child and is collected after the cord has been cut off. The umbilical cord is routinely discarded with the placenta after a child is born.
Earthquakes, Tsunamis, Mudslides: Extreme Events - What Do They Mean?
In lieu of recent, tumultuous occurrences, people are more compelled than ever to discover the mystery of these modern-day, earth-changing events.One day, Earth(1) is experiencing the fourth largest earthquake in a century - a 9.
Aliens in Archaeology
As you read this book you will have to suspend the disbelief you feel when confronted with my assertions that for at least 5000 years man has been in close contact all over the world. If you have read my other books you will know I have made the case better than any and that there are lots of good scholars who agree with me.
Increasing Lightening Storm Intensity and Direction Control of Strikes
Using four UAVs in formation with one C-130 Hercules Aircraft or 747 with onboard laser:http://www.de.
Pandemic Crisis Cure Concept
What happens if the world is faced with a Pandemic, for which no cure currently exists but one is on the verge of being discovered? Here is a concept, which with the proper protocols could save the human race from near extinction. Human Hibernation.
Visual Limits of the Human Brain Processing Speed
Visual limits of the human brain and the visual processing time is quite evident. This why animals have camouflage skin, humans get headaches at trade shows and why video or game players will be the fighter pilots of the future.
|home | site map | Xray Photography|