Observatory

class showermodel.observatory.Observatory(*telescopes, obs_type=None)

Bases: list

List of telescopes.

The characterestics of the observatory are stored in attributes.

Note: Attributes inherited from Telescope (i.e., tel_type, tel_apert, tel_area and tel_N_pix) are not updated when telescopes are modified or appended.

Parameters

*telescopes (Telescope) – List of telescopes objects to be included.
obs_type (str) – Name given to the observatory. Default to None.

obs_type

Name given to the observatory. Default to None.

Type: str

N_tel

Number of telescopes.

Type: int

x_c

East coordinate in km of the center of the grid.

Type: float

y_c

North coordinate in km of the center of the grid.

Type: float

z_c

Height of the grid in km above ground level.

Type: float

size_x

Size of the observatory in km across the x direction.

Type: float

size_y

Size of the observatory in km across the y direction.

Type: float

N_x

Number of cells across the x direction (only Grid objects).

Type: int

N_y

Number of cells across the y direction (only Grid objects).

Type: int

cell_area

Area in m^2 of one cell (only Grid objects).

Type: float

tel_type

Name of the subclass of Telescope.

Type: str

tel_apert

Angular diameter in degrees of the telescope FoV.

Type: float

tel_area

Detection area of each telescope in m^2 (e.g., mirror area of an IACT).

Type: float

tel_N_pix

Number of camera pixels.

Type: int

show(): Show the telescope positions and indexes in a 2D plot.

class showermodel.observatory.Array25(telescope=None, x_c=0.0, y_c=0.0, z_c=0.0, theta=None, alt=None, az=None, R=0.341, rot_angle=0.0)

Bases: Observatory

Array of 25 telescopes similar to the layout of MST telescopes of CTA-South.

The pointing directions of all the telescopes are set equally, but they can be modified individually (along with other porperties) later on.

The telescope index is sorted first by radius and then by azimuth, so that tel_index=0 corresponds to the central telescope.

Parameters

telescope (Telescope) – If None, the default IACT object is used.
x_c (float) – East coordinate in km of the center of the array.
y_c (float) – North coordinate in km of the center of the array.
z_c (float) – Height of the array in km above ground level.
theta (float) – Zenith angle in degrees of the telescope pointing directions.
alt (float) – Altitude in degrees of the telescope pointing directions. If None, theta is used. If given, theta is overwritten.
az (float) – Azimuth angle (from north, clockwise) in degrees of the telescope pointing directions.
R (float) – Radius in km of the array.
rot_angle (float) – Rotation angle in degrees of the array (clockwise).

obs_type

Set to ‘Array25’.

Type: str

N_tel

Set to 25.

Type: int

x_c

East coordinate in km of the center of the array.

Type: float

y_c

North coordinate in km of the center of the array.

Type: float

z_c

Height of the array in km above ground level.

Type: float

theta

Zenith angle in degrees of the telescope pointing directions.

Type: float

alt

Altitude in degrees of the telescope pointing directions. If None, theta is used. If given, theta is overwritten.

Type: float

az

Azimuth angle (from north, clockwise) in degrees of the telescope pointing directions.

Type: float

R

Radius in km of the array.

Type: float

rot_angle

Rotation angle in degrees of the array (clockwise).

Type: float

class showermodel.observatory.Grid(telescope=None, x_c=0.0, y_c=0.0, z_c=0.0, theta=None, alt=None, az=None, size_x=2.0, size_y=2.0, N_x=10, N_y=10)

Bases: Observatory

Rectangular grid of telescopes across the x and y directions.

The pointing directions of all the telescopes are set equally, but they can be modified individually (along with other porperties) later on.

The telescope index is sorted first by y (from max to min) and then by x (from min to max), so that tel_index=0 corresponds to the telescope placed at the corner with minimum x and maximum y.

Parameters

telescope (Telescope) – If None, the default GridElement object is used.
x_c (float) – East coordinate in km of the center of the grid.
y_c (float) – North coordinate in km of the center of the grid.
z_c (float) – Height of the grid in km above ground level.
theta (float) – Zenith angle in degrees of the telescope pointing directions.
alt (float) – Altitude in degrees of the telescope pointing directions. If None, theta is used. If given, theta is overwritten.
az (float) – Azimuth angle in degrees of the telescope pointing directions.
size_x (float) – Size of the grid in km across the x direction.
size_y (float) – Size of the grid in km across the y direction.
N_x (int) – Number of cells across the x direction.
N_y (int) – Number of cells across the y direction.