how to buy your first telescope charlie haffey 781-255-0229 [email protected]
TRANSCRIPT
![Page 1: How To Buy Your First Telescope Charlie Haffey 781-255-0229 chaffey@norwood.k12.ma.us](https://reader036.vdocuments.net/reader036/viewer/2022062408/56649f295503460f94c4249e/html5/thumbnails/1.jpg)
How To Buy Your First Telescope
Charlie Haffey
![Page 2: How To Buy Your First Telescope Charlie Haffey 781-255-0229 chaffey@norwood.k12.ma.us](https://reader036.vdocuments.net/reader036/viewer/2022062408/56649f295503460f94c4249e/html5/thumbnails/2.jpg)
The Target User
Child
Adult
Beginner
Novice
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What You Expect
http://antwrp.gsfc.nasa.gov/apod/ap050428.html
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What You Get
http://antwrp.gsfc.nasa.gov/apod/ap050428.html
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Types of Scopes
•Reflector
•Refractor
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http://www.omni-optical.com/telescope/images/ut104-2scopes.gif
Reflector
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http://www.omni-optical.com/telescope/images/ut104-2scopes.gif
Refractor
![Page 8: How To Buy Your First Telescope Charlie Haffey 781-255-0229 chaffey@norwood.k12.ma.us](https://reader036.vdocuments.net/reader036/viewer/2022062408/56649f295503460f94c4249e/html5/thumbnails/8.jpg)
Types of Mounts
•Dobsonian
•Equatorial
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Dobsonian
•Up and down
•Left and right
www.astrostuff.com/ Swift_Telescopes.htm
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Equatorial mount
Rotates parallel to Earth’s axis
Easier tracking of objects
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Magnification
http://www.celestron.com/tb-trms.htm
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Focal Length
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Calculate Magnification
Focal length of telescopeFocal length of eyepiece
1000 mm25 mm
= 40
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Magnification Limits
•40x most common
•Increase magnification-•decrease field of view •decrease brightness
•Over 100x •rarely used•very difficult tracking
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Image Brightness
Small increase in mirror diameter Large increase in surface area
6 inch mirror = 28 in2 area
8 inch mirror = 50 in2 area
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Mr. Haffey Recommends
Six inch Dobsonian
$259 & up
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The cheapest, easiest and best way
to improve your first telescope...
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Zero magnification finder
EZ Finder™ II
Reflex Sight
$34.95
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Upside is up finder
Right Angle
Correct-Image
Finder Scopes
$49.95 - $79.95
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Do Not Buy
750 power!
From a deli
With unanswered questions
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Do Buy
Largest opening you can afford
Move & use with comfort
Reputable source
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Vendors
Orion Telescopes www.telescope.com
Meade Telescopes www.meade.com
Celestron Telescopes www.celestron.com
The Camera Company www.cameraco.com
866-769-0210
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After you buy your first telescope
Contact Mr. Haffey
•First setup•First use•First light
![Page 24: How To Buy Your First Telescope Charlie Haffey 781-255-0229 chaffey@norwood.k12.ma.us](https://reader036.vdocuments.net/reader036/viewer/2022062408/56649f295503460f94c4249e/html5/thumbnails/24.jpg)
Good Luck, Have Fun!