Equatorial |
Equatorial coordinate systems used by telescopes.
Only used with telescope interface versions 2 and 3
Namespace: ASCOM.DeviceInterface
Assembly: ASCOM.DeviceInterfaces (in ASCOM.DeviceInterfaces.dll) Version: 6.0.0.0 (6.6.9999.9999)
SyntaxMembers| Member name | Value | Description |
|---|---|---|
| equOther | 0 | Custom or unknown equinox and/or reference frame. |
| equTopocentric | 1 | Topocentric coordinates. Coordinates of the object at the current date having allowed for annual aberration, precession and nutation. This is the most common coordinate type for amateur telescopes. |
| equLocalTopocentric | 1 | Obsolete. Please use equTopocentric instead - see Astronomical Coordinates for an explanation. |
| equJ2000 | 2 | J2000 equator/equinox. Coordinates of the object at mid-day on 1st January 2000, ICRS reference frame. |
| equJ2050 | 3 | J2050 equator/equinox, ICRS reference frame. |
| equB1950 | 4 | B1950 equinox, FK4 reference frame. |
Remarks
In June 2018 the name equLocalTopocentric was deprecated in favour of equTopocentric, both names return the same value (1).
The rationale for this change is set out in the Astronomical Coordinates section.
See Also