So you want to buy a telescope!
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This document discusses the parts and types of telescopes, including telescope tubes, mounts, finder scopes and eyepieces. It describes the benefits of different types of telescopes like reflectors and refractors. Telescope mounts can be equatorial or alt-az. The document notes that while larger telescopes with more light gathering power offer better resolution, even smaller and cheaper telescopes can provide fun. It highlights examples of what local astronomy club members have achieved with telescopes, from astrophotography to scientific research.
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So you want to buy a telescope!
This document discusses different types of telescopes including refractors, reflectors, and Cassegrains. It explains what to consider when choosing a telescope like magnification, resolving power, and light gathering power. Telescope mounts including equatorial, alt-az, motorized and GoTo mounts are covered. The costs of telescopes are addressed, noting reflectors offer best value. Examples of what members have done with telescopes like astroimaging and variable star measurements are provided. Recommended retailers are listed and an upcoming event is announced.
Telescopes
This document discusses telescopes and their components. It describes the main types of telescopes as refracting (using lenses) and reflecting (using mirrors) and compares their advantages. Bigger telescopes are generally better as they can collect more light, allowing fainter objects to be seen, and provide better resolution to see finer detail. However, viewing is impacted by turbulence in the atmosphere which causes images to twinkle. Putting telescopes at high altitudes improves viewing conditions by rising above much of the turbulent air. The document provides examples of different telescopes and their resolving powers based on aperture size.
Telescopes
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The document discusses different types of telescopes and factors that impact their performance. It describes how the size of a telescope's aperture impacts its light-gathering power and angular resolution. Larger telescopes are able to see fainter objects but the atmosphere limits resolution to around 1 arcsecond. Techniques like adaptive optics and interferometry are discussed as ways to overcome atmospheric limitations and achieve higher resolutions than single large telescopes.
Telescope
A telescope is an instrument that collects electromagnetic radiation to aid in observing distant objects. There are two main types of telescopes: refracting telescopes, which use lenses, and reflecting telescopes, which use mirrors. Refracting telescopes were invented first in 1608 and helped discoveries like Galileo's observation of Jupiter's moons, while reflecting telescopes were developed later due to producing clearer images. Both telescope types work by collecting and focusing light using the principles of refraction for lenses or reflection for mirrors to magnify distant objects.
Telescope
The document summarizes the basic components and use of a telescope. It discusses that a telescope has two main components - an objective lens or mirror that gathers light, and an ocular lens or eyepiece that is used for viewing. It also mentions that telescopes are used to magnify distant objects and make them appear clearer. The document provides additional details on magnification depending on the eyepiece and telescope focal lengths. It describes the use of a finder, which is a smaller attached telescope, to first locate objects before viewing them in the main telescope for a smaller field of view. It gives tips on focusing the telescope and changing eyepieces to achieve different magnifications.
telescope
telescope
1. Telescopes
2. Telescopes represent an effective way of producing magnification without changing the working distance. Disadvantages They have a restricted field of view Often used to focus on objects closer than infinity Can be modified to correct for the Px’s refractive error.
3. There are two basic kinds of Telescope. Keplerian or Astronomical
4. Galilean Telescopes
Telescopes
There are two main types of telescopes: Keplerian/astronomical telescopes and Galilean telescopes. Keplerian telescopes produce an inverted image while Galilean telescopes produce an upright image. Telescopes can be modified to compensate for refractive errors by adding lenses or changing the tube length to allow viewing of objects that are not at optical infinity.
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So you want to buy a telescope!
This document discusses different types of telescopes including refractors, reflectors, and Cassegrains. It explains what to consider when choosing a telescope like magnification, resolving power, and light gathering power. Telescope mounts including equatorial, alt-az, motorized and GoTo mounts are covered. The costs of telescopes are addressed, noting reflectors offer best value. Examples of what members have done with telescopes like astroimaging and variable star measurements are provided. Recommended retailers are listed and an upcoming event is announced.
Telescopes
This document discusses telescopes and their components. It describes the main types of telescopes as refracting (using lenses) and reflecting (using mirrors) and compares their advantages. Bigger telescopes are generally better as they can collect more light, allowing fainter objects to be seen, and provide better resolution to see finer detail. However, viewing is impacted by turbulence in the atmosphere which causes images to twinkle. Putting telescopes at high altitudes improves viewing conditions by rising above much of the turbulent air. The document provides examples of different telescopes and their resolving powers based on aperture size.
Telescopes
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The document discusses different types of telescopes and factors that impact their performance. It describes how the size of a telescope's aperture impacts its light-gathering power and angular resolution. Larger telescopes are able to see fainter objects but the atmosphere limits resolution to around 1 arcsecond. Techniques like adaptive optics and interferometry are discussed as ways to overcome atmospheric limitations and achieve higher resolutions than single large telescopes.
Telescope
A telescope is an instrument that collects electromagnetic radiation to aid in observing distant objects. There are two main types of telescopes: refracting telescopes, which use lenses, and reflecting telescopes, which use mirrors. Refracting telescopes were invented first in 1608 and helped discoveries like Galileo's observation of Jupiter's moons, while reflecting telescopes were developed later due to producing clearer images. Both telescope types work by collecting and focusing light using the principles of refraction for lenses or reflection for mirrors to magnify distant objects.
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The document summarizes the basic components and use of a telescope. It discusses that a telescope has two main components - an objective lens or mirror that gathers light, and an ocular lens or eyepiece that is used for viewing. It also mentions that telescopes are used to magnify distant objects and make them appear clearer. The document provides additional details on magnification depending on the eyepiece and telescope focal lengths. It describes the use of a finder, which is a smaller attached telescope, to first locate objects before viewing them in the main telescope for a smaller field of view. It gives tips on focusing the telescope and changing eyepieces to achieve different magnifications.
telescope
telescope
1. Telescopes
2. Telescopes represent an effective way of producing magnification without changing the working distance. Disadvantages They have a restricted field of view Often used to focus on objects closer than infinity Can be modified to correct for the Px’s refractive error.
3. There are two basic kinds of Telescope. Keplerian or Astronomical
4. Galilean Telescopes
Telescopes
There are two main types of telescopes: Keplerian/astronomical telescopes and Galilean telescopes. Keplerian telescopes produce an inverted image while Galilean telescopes produce an upright image. Telescopes can be modified to compensate for refractive errors by adding lenses or changing the tube length to allow viewing of objects that are not at optical infinity.
Telescopes
Telescopes work by using lenses or mirrors to collect and focus light from distant objects. The objective lens or primary mirror gathers light and brings it to a focal point. An eyepiece then magnifies this focused light and spreads it over the retina of the eye. Telescopes have two main properties - aperture, which determines how much light is collected, and magnification, which is determined by the eyepiece. There are two main types of telescopes - refracting telescopes which use lenses, and reflecting telescopes which use mirrors. Electric focusers can precisely focus a telescope automatically.
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Refracting telescopes use lenses to gather and focus light, while reflecting telescopes use mirrors. Most large telescopes, like those found in observatories, are reflecting telescopes because it is easier to build large mirrors that gather more light. Invisible light telescopes can detect wavelengths beyond the visible spectrum, allowing astronomers to study objects that cannot be observed with visible light alone, such as using infrared telescopes to gather heat signatures.
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So you want to buy a telescope!
- 1. Presented by the Jodi McCullough of The Mahoning Valley Astronomical Society
- 2. Everything you wanted to know … but could not afford to ask!
- 3. Parts and Pieces Telescope Tube with Optics
- 5. Parts and Pieces Finder Scope
- 7. Why use a telescope? 1. Magnify Nearby Objects
- 9. Morel of the story Do not purchase a scope whose chief advertisement mentions magnification…
- 11. 3. Light Gathering Power
- 12. Basic Types of Telescope 1. Refractor
- 13. 2. Reflectors
- 14. 3. Cassegrain
- 15. Best Value For Your Money? Reflectors
- 18. Bigger is better. Larger Lens or Mirror Greater Light Gathering Power and Resolution
- 20. Low Cost vs High Cost Both Are Fun!
- 21. Telescope Mounts Equatorial Easier for Amateur Astrophotography
- 23. Motorized Track Night Sky as Earth Rotates Adds to the cost
- 24. GoTo Mounts Computerized Pointing Easier for Beginners More Costly
- 25. So what will this cost?
- 26. So what will this cost? Check Out Telescopes- Columbiana Library
- 27. So what will this cost?
- 28. Add this and have the equivalent of a computerized system.
- 29. So what will this cost? Intelliscope
- 30. So what will this cost?
- 31. So what will this cost?
- 32. What will you get if you spend this?
- 33. Forget keeping up with the Joneses…
- 36. Or you can build your own
- 37. Many MVAS club members have built telescopes.
- 38. So what can you do with a telescope?
- 39. Astroimaging Jodi and Roy McCullough- MVAS Club Members
- 40. Mike Heim- MVAS Club Member
- 41. Lou DiNardo- MVAS Club Member
- 42. Don Cherry- MVAS Club Members
- 43. Scientific Research Variable star measurements Phil Plante and Chris Stephan- MVAS Members
- 44. Recommended Retailers Woodland Hills Camera and Telescope Orion Telescopes and Binocular Astromart- Used and New eBay- Used and New
- 45. Presented by the Mahoning Valley Astronomical Society