In my last post I discussed the inaccuracy of an iPhone compass, and I promised to share the results of my Cammenga compass. The task, if you read the previous post, was to align my telescope mount to true North.

The challenge is the top of the mount is angled upward about 34 degrees, so I can’t place the compass on the top of the mount. So, I had to take a different approach.

Continue reading How Accurate is a Cammenga Lensatic Compass? →