moonsun (version 0.1.3)

as.gmt: Converting between several time standards

Description

These functions are used for converting between astronomical and sidereal times.

Usage

as.gmt(x, jday = jd(), lambda = getOption("longitude"), ...)
as.gst(x, jday = jd(), lambda = getOption("longitude"), ...)
as.lst(x, lambda = getOption("longitude"), ...)
as.lt(x, ...)

Arguments

x

an object of class gmt (Greenwich Mean Time), gst (Greenwich Sidereal Time), lst (Local Sidereal Time) or lt (Local Time)

jday

Julian Day Number (default for today)

lambda

Longitude of observer (default taken from options)

...

Additional arguments

Value

A converted object of appropriate class.

Examples

l=lt(length=10)
as.gst(l)
as.lst(l)
as.gmt(l)
as.lt(as.gst(as.gmt(l)))