PointingInfo¶

class gammapy.data.PointingInfo(table)[source]¶

IACT array pointing info.

Data format specification: POINTING

Parameters:	table : `Table` Table (with meta header info) on pointing

Examples

>>> from gammapy.data import PointingInfo
>>> pointing_info = PointingInfo.read('$GAMMAPY_DATA/tests/hess_event_list.fits')
>>> print(pointing_info)

Attributes Summary

`altaz`	ALT / AZ position computed from RA / DEC (`SkyCoord`)
`altaz_frame`	ALT / AZ frame (`AltAz`).
`altaz_from_table`	ALT / AZ position from table (`SkyCoord`)
`duration`	Pointing table duration (`TimeDelta`).
`location`	Observatory location (`EarthLocation`).
`radec`	RA / DEC position from table (`SkyCoord`)
`time`	Time array (`Time`)
`time_ref`	Time reference (`Time`)

Methods Summary

`altaz_interpolate`(self, time)	Interpolate pointing for a given time.
`read`(filename[, hdu])	Read `PointingInfo` table from file.

Attributes Documentation

duration¶

Pointing table duration (TimeDelta).

The time difference between the first and last entry.

Methods Documentation

altaz_interpolate(self, time)[source]¶: Interpolate pointing for a given time.

classmethod read(filename, hdu='POINTING')[source]¶

Read PointingInfo table from file.

Parameters:	filename : str File name hdu : int or str HDU number or name
Returns:	pointing_info : `PointingInfo` Pointing info object