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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Side Error & Index Check
From: Bruce J. Pennino
Date: 2015 Jun 8, 08:46 -0700
From: Bruce J. Pennino
Date: 2015 Jun 8, 08:46 -0700
Hello:
My Astra has always had a very small index error......maybe 1 minute on or off at most . Very stable. Last night I just decided to check the index against a very clear Venus. With about zero angle, when I went to align the images, I found to my great surprise only a partial overlap of the "stars". The index error was about zero so I don't intend to make any adjustment. Bauer calls this "side error" and it would require professional adjustment. I must say that checking the index against a star overlap seems easier than against a fuzzy horizon. Why is it not mentioned more often? Seems basic to me.
Comments appreciated...still learning here.
Best regards
Bruce
