gemini_instruments.nifs package
- class gemini_instruments.nifs.AstroDataNifs(provider)[source]
Bases:
AstroDataGemini
- filter_name(stripID=False, pretty=False)[source]
Returns the name of the filter(s) used. The component ID can be removed with either ‘stripID’ or ‘pretty’. If ‘pretty’ is True, filter positions such as ‘Open’, ‘Dark’, ‘blank’, and others are removed leaving only the relevant filters in the string.
- gain()[source]
Returns the gain used for the observation. A lookup table is uses to compare the bias value in the headers to the bias values associate with the various gain settings.
- Returns
Gain used for the observation.
- Return type
- gcal_lamp()[source]
Returns the name of the GCAL lamp being used, or “Off” if no lamp is in used. This applies to flats and arc observations when a lamp is used. For other types observation, None is returned.
This overrides the gemini level descriptor, as NIFS has more lamp names than are accommodated by that descriptor function.
- Returns
lamps – Name of the GCAL lamp, or “Off”
- Return type
<str>
- non_linear_level()[source]
Returns the level at which the array becomes non-linear. The return units are ADUs. A lookup table is used. Whether the data has been corrected for non-linearity or not is taken into account. A list is returned unless called on a single-extension slice.
- Returns
Level in ADU at which the non-linear regime starts.
- Return type
int/list
- pixel_scale()[source]
Returns the pixel scale in arc seconds. A lookup table indexed on focal_plane_mask, disperser, and filter_name is used.
- Returns
Pixel scale in arcsec.
- Return type
lfloat
- read_mode()[source]
Returns the read mode for the observation. The read mode is directly associated with the LNRS header keyword value.
- Returns
Read mode for the observation.
- Return type
- read_noise()[source]
Returns the detector read noise, in electrons. A lookup table is used. The read noise depends on the gain setting and is affected by the number of coadds and non-destructive pairs. A list is returned unless called on a single-extension slice.
- Returns
Detector read noise in electrons.
- Return type
list/float
Subpackages
Submodules
gemini_instruments.nifs.adclass module
- class gemini_instruments.nifs.adclass.AstroDataNifs(provider)[source]
Bases:
AstroDataGemini
- filter_name(stripID=False, pretty=False)[source]
Returns the name of the filter(s) used. The component ID can be removed with either ‘stripID’ or ‘pretty’. If ‘pretty’ is True, filter positions such as ‘Open’, ‘Dark’, ‘blank’, and others are removed leaving only the relevant filters in the string.
- gain()[source]
Returns the gain used for the observation. A lookup table is uses to compare the bias value in the headers to the bias values associate with the various gain settings.
- Returns
Gain used for the observation.
- Return type
- gcal_lamp()[source]
Returns the name of the GCAL lamp being used, or “Off” if no lamp is in used. This applies to flats and arc observations when a lamp is used. For other types observation, None is returned.
This overrides the gemini level descriptor, as NIFS has more lamp names than are accommodated by that descriptor function.
- Returns
lamps – Name of the GCAL lamp, or “Off”
- Return type
<str>
- non_linear_level()[source]
Returns the level at which the array becomes non-linear. The return units are ADUs. A lookup table is used. Whether the data has been corrected for non-linearity or not is taken into account. A list is returned unless called on a single-extension slice.
- Returns
Level in ADU at which the non-linear regime starts.
- Return type
int/list
- pixel_scale()[source]
Returns the pixel scale in arc seconds. A lookup table indexed on focal_plane_mask, disperser, and filter_name is used.
- Returns
Pixel scale in arcsec.
- Return type
lfloat
- read_mode()[source]
Returns the read mode for the observation. The read mode is directly associated with the LNRS header keyword value.
- Returns
Read mode for the observation.
- Return type
- read_noise()[source]
Returns the detector read noise, in electrons. A lookup table is used. The read noise depends on the gain setting and is affected by the number of coadds and non-destructive pairs. A list is returned unless called on a single-extension slice.
- Returns
Detector read noise in electrons.
- Return type
list/float
gemini_instruments.nifs.lookup module
- class gemini_instruments.nifs.lookup.Config(mdf, offsetsection, pixscale, mode)
Bases:
tuple
- property mdf
Alias for field number 0
- property mode
Alias for field number 3
- property offsetsection
Alias for field number 1
- property pixscale
Alias for field number 2
- class gemini_instruments.nifs.lookup.Constants(readnoise, gain, well, linearlimit, coeff1, coeff2, coeff3, nonlinearlimit)
Bases:
tuple
- property coeff1
Alias for field number 4
- property coeff2
Alias for field number 5
- property coeff3
Alias for field number 6
- property gain
Alias for field number 1
- property linearlimit
Alias for field number 3
- property nonlinearlimit
Alias for field number 7
- property readnoise
Alias for field number 0
- property well
Alias for field number 2