34 lines
1.6 KiB
Go
34 lines
1.6 KiB
Go
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package coord
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import (
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"testing"
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"time"
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"b612.me/astro/basic"
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)
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func TestRefractionWrappers(t *testing.T) {
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assertClose(t, "AtmosphericRefractionFromTrueAltitude", AtmosphericRefractionFromTrueAltitude(10, 1010, 10), basic.RefractionFromTrueAltitude(10, 1010, 10), 1e-12)
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assertClose(t, "AtmosphericRefractionFromApparentAltitude", AtmosphericRefractionFromApparentAltitude(10, 1010, 10), basic.RefractionFromApparentAltitude(10, 1010, 10), 1e-12)
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assertClose(t, "ApparentAltitude", ApparentAltitude(10, 1010, 10), basic.ApparentAltitude(10, 1010, 10), 1e-12)
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assertClose(t, "TrueAltitude", TrueAltitude(10, 1010, 10), basic.TrueAltitude(10, 1010, 10), 1e-12)
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}
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func TestEquatorialToApparentHorizontal(t *testing.T) {
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date := time.Date(2026, 4, 27, 2, 30, 45, 0, time.UTC)
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ra := 101.28715533
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dec := -16.71611586
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observerLon := 115.0
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observerLat := 40.0
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pressureHPa := 1010.0
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temperatureC := 10.0
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trueHorizontal := EquatorialToHorizontal(date, ra, dec, observerLon, observerLat)
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apparentHorizontal := EquatorialToApparentHorizontal(date, ra, dec, observerLon, observerLat, pressureHPa, temperatureC)
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assertClose(t, "apparent altitude", apparentHorizontal.Altitude, basic.ApparentAltitude(trueHorizontal.Altitude, pressureHPa, temperatureC), 1e-12)
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assertClose(t, "apparent zenith", apparentHorizontal.Zenith, 90-apparentHorizontal.Altitude, 1e-12)
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assertClose(t, "apparent azimuth unchanged", apparentHorizontal.Azimuth, trueHorizontal.Azimuth, 1e-12)
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assertClose(t, "apparent hour angle unchanged", apparentHorizontal.HourAngle, trueHorizontal.HourAngle, 1e-12)
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}
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