Observations/Distance: Difference between revisions
added link to Theodolite
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* [[Tech/Rayleigh_criterion]]
* [[Observations/Perspective]]
* [[
===References===
<references>
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<ref name="Sagitta">Sagitta Calc: https://mathopenref.com/sagitta.html</ref>
<ref name="CurveCalc">Curve Calc: http://walter.bislins.ch/bloge/index.asp?page=Advanced+Earth+Curvature+Calculator</ref>
</references>
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