List of Gemini Standard Descriptors

To run and re-use Gemini primitives and functions this list of Standard Descriptors must be defined for input data. This also applies to data that is to be served by the Gemini Observatory Archive (GOA).

For any AstroData objects, to get the list of the descriptors that are defined use the AstroData.descriptors attribute:

>>> import astrodata
>>> import gemini_instruments
>>> ad = astrodata.open('../playdata/N20170609S0154.fits')

>>> ad.descriptors
('airmass', 'amp_read_area', 'ao_seeing', ..., 'well_depth_setting')

To get the values:

>>> ad.airmass()

>>> for descriptor in ad.descriptors:
...     print(descriptor, getattr(ad, descriptor)())

Note that not all of the descriptors below are defined for all of the instruments. For example, shuffle_pixels is defined only for GMOS data since only GMOS offers a Nod & Shuffle mode.