1. How To Buy Your First Telescope Charlie Haffey 781-255-0229 chaffey@norwood.k12.ma.us www.norwood.k12.ma.us/sci

2. The Target User Child Adult Beginner Novice

3. What You Expect http://antwrp.gsfc.nasa.gov/apod/ap050428.html

4. What You Get http://antwrp.gsfc.nasa.gov/apod/ap050428.html

5. Types of Scopes Reflector Refractor

6. http://www.omni-optical.com/telescope/images/ut104-2scopes.gif Reflector

7. http://www.omni-optical.com/telescope/images/ut104-2scopes.gif Refractor

8. Types of Mounts Dobsonian Equatorial

9. Dobsonian Up and down Left and right www.astrostuff.com/ Swift_Telescopes.htm

10. Equatorial mount Rotates parallel to Earth’s axis Easier tracking of objects

11. Magnification http://www.celestron.com/tb-trms.htm

12. Focal Length

13. Calculate Magnification Focal length of telescope Focal length of eyepiece 1000 mm 25 mm = 40

14. Magnification Limits 40x most common Increase magnification- decrease field of view decrease brightness Over 100x rarely used very difficult tracking

15. Image Brightness Small increase in mirror diameter Large increase in surface area  6 inch mirror = 28 in 2 area  8 inch mirror = 50 in 2 area

16. Mr. Haffey Recommends Six inch Dobsonian $259 & up

17. The cheapest, easiest and best way to improve your first telescope...

18. Zero magnification finder EZ Finder™ II Reflex Sight $34.95

19. Upside is up finder Right Angle Correct-Image Finder Scopes $49.95 - $79.95

20. Do Not Buy 750 power! From a deli With unanswered questions

21. Do Buy Largest opening you can afford Move & use with comfort Reputable source

22. 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

23. After you buy your first telescope Contact Mr. Haffey First setup First use First light

24. Good Luck, Have Fun!