RITTENHOUSE ASTRONOMICAL SOCIETY
 

    

TED WILLIAMS; Astronomy Educator, Society President

 NASA Solar System Ambassador // Hayden Planetarium, Rose Science Center, AMNH //
 Rittenhouse Astronomy Educator, Fels Planetarium, Franklin Institute //
Mallon Planetarium- Eagleville PA / Centennial Planetarium - Warmister PA

 

 

 

Quick Start Astronomy Guide
Tools to Surf the Milky Way

 
 
 
 
 
 

 

 
 

 
 
 

 
 

 
 

 
 

 
 
 
 
 

BINOCULARS
 

   

   

 7  Magnification determines field of view
 x
50  Aperture is the size of the lens
   

Field of View

Size of the Lens
   
 

 

 

 
   
   
   
   
   

80 MM and larger

   
   
   
   
   
   

Small Portable TELESCOPE

   

Refractor

Reflector

"Go To" Telescopes (both refractor and reflector)
   
   
   
   

Reflector ~ Dobsonian Style

 

 

Tabletop Model (2' tall)
Easy to Stash and Go

Standard Design (4-6' tall)
Not that Portable

Truss Design
 More Portability ~ Alignment Considerations