Maria Haupt / gammalib

Authored by Jürgen Knödlseder 2016-02-26 09:45:06 +0100

1 parent 57d8d1a8

Showing 1 changed file with 32 additions and 1 deletions

doc/source/howto/sky.rst

1		-Sky maps, sky coordinates and sky regions
	1	+Sky coordinates, sky maps and sky regions
2	2	-----------------------------------------
3	3
	4	+How to convert a sky coordinate from celestial to Galactic?
	5	+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	6	+
	7	+To convert from celestial to Galactic coordinates you can set a sky
	8	+direction in celestial coordinates and read it back in Galactic
	9	+coordinates.
	10	+
	11	+Python:
	12	+
	13	+.. code-block:: python
	14	+
	15	+ >>> import gammalib
	16	+ >>> dir=gammalib.GSkyDir()
	17	+ >>> dir.radec_deg(83.63,22.01)
	18	+ >>> l=dir.l_deg()
	19	+ >>> b=dir.b_deg()
	20	+ >>> print(l,b)
	21	+ (184.55973405309402, -5.7891829467816827)
	22	+
	23	+C++:
	24	+
	25	+.. code-block:: cpp
	26	+
	27	+ #include "GammaLib.hpp"
	28	+ GSkyDir dir;
	29	+ dir.radec_deg(83.63,22.01);
	30	+ double l = dir.l_deg();
	31	+ double b = dir.b_deg();
	32	+ std::cout << l << ", " << b << std::endl;
	33	+
	34	+
4	35	How to convert sky map projections?
5	36	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6	37
...	...