gemini_instruments.gsaoi package¶

class gemini_instruments.gsaoi.AstroDataGsaoi(provider)[source]¶

Bases: gemini_instruments.gemini.adclass.AstroDataGemini

array_name()[source]¶

Returns a list of the array names of each extension

Returns:	names of the arrays
Return type:	list/str

central_wavelength(asMicrometers=False, asNanometers=False, asAngstroms=False)[source]¶

Returns the central wavelength in meters or the specified units

Parameters:	asMicrometers (bool) – If True, return the wavelength in microns asNanometers (bool) – If True, return the wavelength in nanometers asAngstroms (bool) – If True, return the wavelength in Angstroms
Returns:	The central wavelength setting
Return type:	float

gain()[source]¶

Returns the gain (electrons/ADU) of the extensions

Returns:	gain (e/ADU)
Return type:	list/float

group_id()[source]¶

Returns a string representing a group of data that are compatible with each other. This is used when stacking, for example. Each instrument and mode of observation will have its own rules.

Returns:	A group ID for compatible data
Return type:	str

is_coadds_summed()[source]¶

Tells whether or not the co-adds have been summed. If not, they have been averaged. GSAOI averages them.

Returns:	True if the data has been summed. False if it has been averaged.
Return type:	bool

nominal_photometric_zeropoint()[source]¶

Returns the nominal zeropoints (i.e., the magnitude corresponding to a pixel value of 1) for the extensions in an AD object. Zeropoints in table are for electrons, so subtract 2.5*lg(gain) if the data are in ADU

Returns:	zeropoint values, one per SCI extension
Return type:	float/list

non_linear_level()[source]¶

Returns the level at which the data become non-linear, in ADU.

Returns:	Value at which the data become non-linear
Return type:	int/list

nonlinearity_coeffs()[source]¶

For each extension, return a tuple (a0,a1,a2) of coefficients such that the linearized counts are a0 + a1*c _ a2*c^2 for raw counts c

Returns:	coefficients
Return type:	tuple/list

read_noise()[source]¶

Returns the read noise of each extension in electrons, as a float or a list of floats

Returns:	read noise in electrons
Return type:	float/list

read_speed_setting()[source]¶

Returns a string describing the read speed setting, as used in the OT

Returns:	read speed setting
Return type:	str

saturation_level()[source]¶

Returns the saturation level in ADU for each extension, as a list or a single value

Returns:	saturation level in ADU
Return type:	int/list

wcs_dec()[source]¶

Returns the Declination of the center of the field based on the WCS rather than the DEC keyword. This just uses the CRVAL2 keyword.

Returns:	declination in degrees
Return type:	float

wcs_ra()[source]¶

Returns the Right Ascension of the center of the field based on the WCS rather than the RA keyword. This just uses the CRVAL1 keyword.

Returns:	right ascension in degrees
Return type:	float

Submodules¶

gemini_instruments.gsaoi.adclass module¶

class gemini_instruments.gsaoi.adclass.AstroDataGsaoi(provider)[source]¶