Technical Resources

Atlas / EQ6 Telescope Mount Adjustments

A well illustrated guide to adjusting your EQ6 mount:
Tim's Blog (astronomy and other stuff too): A little tune up for the EQ6...

Polar / Drift Telescope Alignment

For visual observing, or for imaging with short exposure video, a rough polar alignment of the telescope is generally quite adequate. However, when imaging with long exposures, accurate polar alignment is important. The links below explain how to start with an approximate polar alignment and refine it to high accuracy using the "drift" method.

With this method a telescope is first approximately aligned using a polar axis scope if available or visually aiming the polar axis of the telescope toward north. Then the telescope is aimed at a star and the drift of the star noted. Corrections to the telescope alignment are made based on the drift of the star. Detailed, step-by-step information on how to make the corrections can be found at the following links:

Very nice easy to understand multimedia instruction video by Andy Raiford:
Drift Alignment

Clear text and graphical instructions by Scott Tucker:
Polar Alignment


Collimation of a Newtonian Telescope

Easy to understand video by Andy Raiford:
Collimating a Newtonian

Atmospheric "Seeing" or Turbulence

Effects of turbulence in the atmosphere on the views and images through a telescope:
Atmospheric Seeing