TelescopeEquatorialSystem Property |
Equatorial coordinate system used by this telescope.
Namespace: ASCOM.DriverAccess
Assembly: ASCOM.DriverAccess (in ASCOM.DriverAccess.dll) Version: 3351c4f3fa64146a7efd5b51ed4591e32a0a5484
SyntaxExceptions| Exception | Condition |
|---|---|
| NotConnectedException | If the device is not connected |
| DriverException | An error occurred that is not described by one of the more specific ASCOM exceptions. The device did not successfully complete the request. |
Remarks
Most amateur telescopes use topocentric coordinates.
This coordinate system is simply the apparent position in the sky
(possibly uncorrected for atmospheric refraction) for "here and now",
thus these are the coordinates that one would use with digital setting
circles and most amateur scopes. More sophisticated telescopes use one of
the standard reference systems established by professional astronomers.
The most common is the Julian Epoch 2000 (J2000).
These instruments apply corrections for precession,
nutation, aberration, etc. to adjust the coordinates from the standard system
to the pointing direction for the time and location of "here and now".
This is only available for telescope InterfaceVersions 2 and later.
See Also