NavList:

You should review these posts about using an artificial horizon:

http://www.fer3.com/arc/m2.aspx?i=113732&y=201009

http://www.fer3.com/arc/m2.aspx?i=113727&y=201009

http://www.fer3.com/arc/m2.aspx?i=113733&y=201009

Make sure you measure the index error first, do it several times and use the average.

Touch the bottom on the sun in the index mirror with the top of the image reflected in the liquid, this produces a lower limb observation. Don't try to overlap the images.

Apply the index error correction as the first step before dividing by two.

Use the lower limb correction from the Nautical Almanac. do not apply dip.

With this in mind, go back and check your math.

gl
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