PointingInfo

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

Bases: object

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

Attributes Documentation

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).

The time difference between the first and last entry.

location

Observatory location (EarthLocation).

radec

RA / DEC position from table (SkyCoord)

time

Time array (Time)

time_ref

Time reference (Time)

Methods Documentation

altaz_interpolate(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