NavList:

Randy,

Lets look at your statement #7

"7)Put the mirror on the ground, not on a table. Increasing the distance between the telescope and the mirror improves focus, decreases image size and increases accuracy."

There should be no difference between the reflected image observed from 2 ft or 6 ft. An artificial horizon observation can even be made from a plane flying well above a calm surface of a lake or ocean. What I think you are noticing with your table observations are outside vibrations from physical contact, wind, or slight table rocking movements. Putting the AH on the ground prevents physical contact and is less exposed to wind. The disadvantage is a very small field of view when observed from the standing position. I suggest sitting down on the ground with the AH to maintain a large field of view.

Greg Rudzinski
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