ch_ephem.pointing
CHIME ephemeris pointing routines.
Functions
py:meth:galt_pointing_model_ha
py:meth:galt_pointing_model_dec
Functions
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Galt pointing model declination. |
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Galt pointing model hour angle. |
- ch_ephem.pointing.galt_pointing_model_dec(ha_in: Angle, dec_in: Angle, b: list[float] = [1.081, 0.707, -0.076, 0.0, 0.0, 0.0, 0.0]) Angle[source]
Galt pointing model declination.
Calculate pointing correction in declination for the Galt Telescope See description of the pointing model by Lewis Knee: CHIME doclib #754
- Parameters:
ha_in (Skyfield Angle objects) – Target hour angle and declination
dec_in (Skyfield Angle objects) – Target hour angle and declination
b (list of floats) – List of coefficients (in arcmin) for the pointing model (NOTE: it is very unlikely that a user will want to change these from the defaults, which are taken from the pointing model as of 2019-2-15)
- Returns:
correction – Angular offset in hour angle
- Return type:
Angle
- ch_ephem.pointing.galt_pointing_model_ha(ha_in: Angle, dec_in: Angle, a: list[float] = [-5.872, -0.5292, 5.458, -0.076, -0.707, 0.0, 0.0]) Angle[source]
Galt pointing model hour angle.
Calculate pointing correction in hour angle for the Galt Telescope See description of the pointing model by Lewis Knee: CHIME doclib #754
- Parameters:
ha_in (Skyfield Angle objects) – Target hour angle and declination
dec_in (Skyfield Angle objects) – Target hour angle and declination
a (list of floats) – List of coefficients (in arcmin) for the pointing model (NOTE: it is very unlikely that a user will want to change these from the defaults, which are taken from the pointing model as of 2019-2-15)
- Returns:
correction – Angular offset in hour angle
- Return type:
Angle