kmos_std_star7

Usage

Overview

This recipe creates a telluric frame and a PSF frames.

Since there cannot be 1 std star per IFU in one exposure, we use several exposures in order to have at least one standard star and one sky in each IFU. The frames are organised following this logic: 1. For each IFU the first standard star in the list of frames is
taken. All subsequent standard star exposures for this IFU are ignored 2. A closest in time sky exposure is uѕed 3. IFUs not containing a standard star and a sky will be empty in the result

NOISE_SPEC contains the shot noise [sqrt(counts*gain)/gain] If the exposures have been taken with KMOS_spec_cal_stdstarscipatt, an additional noise component is added: All existing sky exposures for an IFU are subtracted pairwise, spectra are extracted and the std deviation is computed

Input files:

DO KMOS
category Type Explanation Required #Frames
-------- ----- ----------- -------- -------
STD RAW Std. star & sky exposures Y >=1
XCAL F2D x calibration frame Y 1
YCAL F2D y calibration frame Y 1
LCAL F2D Wavelength calib. frame Y 1
MASTER_FLAT F2D Master flat frame Y 1
WAVE_BAND F2L Table with start-/end-wl Y 1
ILLUM_CORR F2I Illumination correction N 0,1
SOLAR_SPEC F1S Solar spectrum N 0,1
(only for G stars)
ATMOS_MODEL F1S Model atmospheric transmisson N 0,1
(only for OBAF stars in K band)
SPEC_TYPE_LOOKUP F2L LUT eff. stellar temperature N 0,1

Output files:

DO KMOS
category Type Explanation
-------- ----- -----------
TELLURIC F1I The normalised telluric spectrum
(including errors)
STAR_SPEC F1I The extracted star spectrum
(including errors)
STD_IMAGE F2I The standard star PSF images
STD_MASK F2I The mask used to extract the star spec
NOISE_SPEC F1I The extracted noise spectrum

Options

--startype <str>

The spectral type of the star (O, B, A, F, G) e.g. G4V (str; default: ´´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.startype [default = ].

--imethod <str>

Method to use for interpolation. ["NN" (nearest neighbour), "lwNN" (linear weighted nearest neighbor), "swNN" (square weighted nearest neighbor), "MS" (Modified Shepard´s method), "CS" (Cubic spline)] (str; default: ´CS´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.imethod [default = CS].

--fmethod <str>

Fitting method (gauss, moffat, profile (str; default: ´gauss´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.fmethod [default = gauss].

--neighborhoodRange <float>

Defines the range to search for neighbors in pixels (float; default: 1.001). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.neighborhoodRange [default = 1.001].

--magnitude <str>

Star magnitude (2 values in HK, eg. 12.1,13.2) (str; default: ´´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.magnitude [default = ].

--flux <bool>

TRUE: Apply flux conservation. FALSE: otherwise (bool; default: True). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.flux [default = True].

--save_cubes <bool>

Flag to save reconstructed cubes (bool; default: False). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.save_cubes [default = False].

--no_noise <bool>

Skip the noise computation on sky exposures (bool; default: False). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.no_noise [default = False].

--xcal_interpolation <bool>

Flag to Interpolate xcal between rotator angles (bool; default: True). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.xcal_interpolation [default = True].

--suppress_extension <bool>

Flag to Suppress filename extension (bool; default: False). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.suppress_extension [default = False].

--b_samples <int>

The number of samples in wavelength for the reconstructed cube (int; default: 2048). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.b_samples [default = 2048].

--mask_method <str>

Method used : mask, integrated or optimal (str; default: ´optimal´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.mask_method [default = optimal].

--centre <str>

The centre of the circular mask (pixel) (str; default: ´7.5,7.5´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.centre [default = 7.5,7.5].

--radius <float>

The radius of the circular mask (pixel) (float; default: 3.0). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.radius [default = 3.0].

--cmethod <str>

Apply "average", "median", "sum", "min_max." or "ksigma". (str; default: ´ksigma´). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.cmethod [default = ksigma].

--cpos_rej <float>

The positive rejection threshold for kappa-sigma-clipping (sigma). (float; default: 3.0). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.cpos_rej [default = 3.0].

--cneg_rej <float>

The negative rejection threshold for kappa-sigma-clipping (sigma). (float; default: 3.0). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.cneg_rej [default = 3.0].

--citer <int>

The number of iterations for kappa-sigma-clipping. (int; default: 3). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.citer [default = 3].

--cmax <int>

The number of maximum pixel values to clip with min/max-clipping. (int; default: 1). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.cmax [default = 1].

--cmin <int>

The number of minimum pixel values to clip with min/max-clipping. (int; default: 1). The full name of this option for the EsoRex configuration file is kmos.kmos_std_star.cmin [default = 1].

Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command.

Version

kmos_std_star 2.1.0