Files for Download


Celebrate Astronomy Day!

FREE Messier Presentation


(~11MB File)


Documents  (All PDF Files)

  • Observing Log Forms 
  • Solar & Lunar Observing Log Forms New!
  • Use Your Hand to Measure the Sky
  • Greek Alphabet
  • What is "seeing"
  • Thermodynamics Explained
  • No Tools Collimation---EXCELLENT REFERENCE FILE!
  • Excellent Pronunciation Guide
  • Lumicon's Reference Guide for Using Filters (Excellent)
  • Here's a Great Image of the Solar System to Scale (Print it!)
  • Planet Sizes in KM---Good Reference for Above
  • From 11-12-05:  Conservation of Matter
  • From 11-12-05: What is Parallax?
  • What are the "Trojans"? ***More about The Trojans Part 2
  • Stars Leaving the Galaxy?! Yes!  (Relates to our study of our Galaxy)
  • Is the Milky Way Warped?  Maybe!
  • Solar Imaging on a Budget by Emiel Veldhuis (Zwolle, The Netherlands) ---Used with permission

Astronomical League Goals

  • Messier List
  • Lunar List

Fun Stuff

  • Our Own Messier Log Program --- Try It!
  • Where is M13? (Just save to your Desktop, Dbl Click to Run!)
  • Eyepiece Power Calculator (M13's work! Excel File)
  • UTC Time Converter

Site designed, maintained and sponsored by Chris Reich, TeachU.com.  Use all material freely but give us (The Etna Astros) credit please.