ASCOM Library
Sofa Class
Presentation facade for the IAU SOFA library
Definition
Namespace: ASCOM.Tools
Assembly: ASCOM.AstrometryTools (in ASCOM.AstrometryTools.dll) Version: 2.2.1+77356f79b05b579f6d860a4edd5934fda9fe29e4
Assembly: ASCOM.AstrometryTools (in ASCOM.AstrometryTools.dll) Version: 2.2.1+77356f79b05b579f6d860a4edd5934fda9fe29e4
C#
public class SofaVB
Public Class Sofa- Inheritance
- Object Sofa
Remarks
This component assumes that a native library called libsofa exists in the same folder as the ASCOM.Tools DLL. This library must be compiled from the IAU SOFA C code base
for each supported OS platform: linux64, arm32, win64 etc.
Constructors
| Sofa | Initializes a new instance of the Sofa class |
Methods
| Af2a | Convert degrees, arcminutes, arcseconds to radians. |
| Anp | Normalize angle into the range 0 <= a < 2pi. |
| Atci13 | Transform ICRS star data, epoch J2000.0, to CIRS using the SOFA Atci13 function. |
| Atco13 | ICRS RA,Dec to observed place using the SOFA Atco13 function. |
| Atic13 | Transform star RA,Dec from geocentric CIRS to ICRS astrometric using the SOFA Atic13 function. |
| Atio13 | CIRS RA,Dec to observed place using the SOFA Atio13 funciton. |
| Atoc13 | Observed place at a ground based site to ICRS astrometric RA,Dec using the SOFA Atoc13 function. |
| Atoi13 | Observed place to CIRS using the SOFA Atoi13 function. |
| Dat | For a given UTC date, calculate Delta(AT) = TAI−UTC (number of leap seconds). |
| Dtf2d | Encode date and time fields into 2-part Julian Date (or in the case of UTC a quasi-JD form that includes special provision for leap seconds). |
| Eo06a | Equation of the origins, IAU 2006 precession and IAU 2000A nutation. |
| SofaIssueDate | Release date of the SOFA issue currently used by this component. |
| SofaReleaseNumber | Major number of the SOFA issue currently used by this component. |
| SofaRevisionDate | Release date of the revision to the SOFA Issue that is actually being used by this component. |
| SofaRevisionNumber | Revision number of the SOFA issue currently used by this component. |
| Taitt | Time scale transformation: International Atomic Time, TAI, to Terrestrial Time, TT. |
| Taiutc | Time scale transformation: International Atomic Time, TAI, to Coordinated Universal Time, UTC. |
| Tf2a | Convert hours, minutes, seconds to radians. |
| Tttai | Time scale transformation: Terrestrial Time, TT, to International Atomic Time, TAI. |
| Utctai | Time scale transformation: Coordinated Universal Time, UTC, to International Atomic Time, TAI. |