NavList:

I bought the Multiyear Interactive Computer Almanac from Willman-Bell, calculated a series of solar positions by second, and made observations during that sequence period. I then compared my observations with the calculations. I was in error on average 4.3 seconds (time) with a SD of 8.57 seconds. The sun is moving an arc minute every 4 seconds. With my current skill set locating North within 20" is out of reach.

I am not about to argue with my own numbers. Still, it is difficult to understand how I could miss the alignment of the trailing edge of the Sun with my vertical cross hair by multiple seconds.

What is a reasonable accuracy expectation for series of solar azimuth observations?

Thank you.
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