NavList:

Hello, Alex!

You wrote: “I am very impressed with the work you have done. How much time did this take?”

In the grahp I have posted, I ploted the results from observations taken during period of about 2,5 years. It would be very hard and tiring to calculate and plot the results after several years. Therefore I had another strategy. I ploted the results in the same day I made observations.

I put in Excel measured angles and calculated angles, index correction, filter correction and Excel calculated for me final average value of arc correction. I even wrote a very long formula in one cell of Excell to automaticaly calulate micrometer error according my micrometer correction graph.

And then I ploted final correction value in graph. It takes about 10 minutes to do all the steps (it depends how many observations are to be documented).

To get calculated values of angles I used :

1) for lunars — Frank’s online lunar calculator;

2) for Sun sigts with AH—Frank’s Antispoof app;

3) for star/star distances — P.Hirose’s Lunar4.4

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