potpyri.instruments.GMOS

GMOS/Gemini instrument configuration and reduction parameters.

Classes

GMOS()

GMOS at Gemini: optical imaging with bias and flat calibration.
class potpyri.instruments.GMOS.GMOS[source]

Bases: Instrument

GMOS at Gemini: optical imaging with bias and flat calibration.

get_ampl(hdr)[source]

Return amplifier identifier from header as string.

get_catalog(hdr)[source]

Return catalog name for zeropoint (e.g. ‘PS1’).

get_gain(hdr)[source]

Return gain value(s) for the detector/amplifier.

Parameters:

hdr (astropy.io.fits.Header) – FITS header (may be used in subclasses for amp-dependent values).

Returns:

Gain in e-/ADU.

Return type:

float or list

get_instrument_name(hdr)[source]

Return instrument name (lowercase) for paths/filenames.

get_number(hdr)[source]
get_rdnoise(hdr)[source]

Return read noise value(s) for the detector/amplifier.

Parameters:

hdr (astropy.io.fits.Header) – FITS header (may be used in subclasses for amp-dependent values).

Returns:

Read noise in electrons.

Return type:

float or list

get_time(hdr)[source]

Return MJD from header (mjd_keyword) as float.

import_image(filename, amp, log=None)[source]

Load raw multi-extension FITS and return processed CCDData (bias/overscan/trim/gain).

Parameters:

  • filename (str) – Path to raw FITS file.

  • amp (str) – Amplifier identifier (number of extensions).

  • log (ColoredLogger, optional) – Logger for progress.

Returns:

Processed frame in electrons (single combined image).

Return type:

ccdproc.CCDData

needs_sky_subtraction(filt)[source]

Return True if sky subtraction should be run for this filter.

Parameters:

filt (str) – Filter name (e.g. ‘r’, ‘J’).

Returns:

True for NIR wavelength instruments, False otherwise.

Return type:

bool

raw_format(proc)[source]

Return glob pattern for raw files (e.g. ‘sci_img_*.fits’ or ‘sci_img*[!proc].fits’).