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AstroUtils Class

Class providing a suite of tested astronomy support functions to save develpment effort and provide consistant behaviour.
Inheritance Hierarchy
SystemObject
  ASCOM.Astrometry.AstroUtilsAstroUtils

Namespace: ASCOM.Astrometry.AstroUtils
Assembly: ASCOM.Astrometry (in ASCOM.Astrometry.dll) Version: 7.0.0-rc.0+0
Syntax
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public class AstroUtils : IDisposable

The AstroUtils type exposes the following members.

Constructors
 NameDescription
Public methodAstroUtils AstroUtils initiator
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Properties
 NameDescription
Public propertyJulianDateUtc Current Julian date based on the UTC time scale
Public propertyLeapSeconds Sets or returns the number of leap seconds used in ASCOM Astrometry functions
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Methods
 NameDescription
Public methodCalendarToMJD Converts a calendar day, month, year to a modified Julian date
Public methodConditionHA Conditions an hour angle to be in the range -12.0 to +12.0 by adding or subtracting 24.0 hours
Public methodConditionRA Conditions a Right Ascension value to be in the range 0 to 23.999999.. hours
Public methodDeltaT Returns the current DeltaT value in seconds
Public methodDeltaUT Proivides an estimates of DeltaUT1, the difference between UTC and UT1. DeltaUT1 = UT1 - UTC
Public methodDispose Releases all resources owned by the AstroUtils component and readies it for disposal
Public methodEventTimes Function that returns a list of rise and set events of a particular type that occur on a particular day at a given latitude, longitude and time zone
Public methodFormatJD Returns a Julian date as a string formatted according to the supplied presentation format
Public methodFormatMJD Returns a modified Julian date as a string formatted acording to the supplied presentation format
Public methodJulianDateTT Current Julian date based on the terrestrial time (TT) time scale
Public methodJulianDateUT1 Current Julian date based on the UT1 time scale
Public methodMJDToDate Translates a modified Julian date to a date
Public methodMJDToOADate Translates a modified Julian date to a VB ole automation date, presented as a double
Public methodMoonIllumination Returns the fraction of the Moon's surface that is illuminated
Public methodMoonPhase Returns the Moon phase as an angle
Public methodRange Flexible routine to range a number into a given range between a lower and an higher bound.
Public methodUnRefract Computes atmospheric refraction in zenith distance.
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Remarks
A number of these routines are provided to support migration from the Astro32.dll. Unlike Astro32, these routines will work in both 32bit and 64bit applications.
See Also