10. Glossary
- CCD
The CCD Table: FITS table containing info about READOUT NOISE and the list of detected bad pixels
- CRV
The Curvature Model: model which describes the spectra curvatures, used to follow the spectra tracing
- DataSet
A collection of data of the target or calibration files
- DRS
The Data Reduction Software: the reduction core of SIPGI
- EXR
The Extraction Table: FITS table containing the solution to extract spectra 2D wavelength calibrated and corrected by distortions
- EXR1D
The 1D Extracted Spectra: FITS image containing 1D spectra spectra lambda calibrated, count units
- EXR1DFLUX
The 1D Extracted Spectra: FITS image containing 1D spectra spectra lambda calibrated, flux units (erg cm-2 s-1 Å -1 )
- EXR2D
The 2D Extracted Spectra: FITS image containing 2D spectra spectra lambda calibrated, count units
- EXR2DFLUX
The 2D Extracted Spectra: FITS image containing 2D spectra spectra lambda calibrated, flux units (erg cm-2 s-1 Å -1 )
- GRS
The Grism Table: FITS table containing in the HEADER information about extractions limits, spectra re-sampling and lambda calibration refinement
- Hippparcos catalog
The FITS file catalog containing Hipparcos stars, with there stellar type and the 2MASS magnitudes (Y, H, K)
- IDS
The Inverse Dispersion Solution: model which describes the relation pixel to lambda, used to lambda calibrate spectra
- LIN
The Line Catalog: FITS table containing the list of expected emission lines for a given grism
- MMS
The MODS Mask files: the ASCII file containing geometrical description of the MODS mask
- OPT
The Optical Model: model which describes the instrument optical distortions, used to locate the slits on frame
- PAF
The ASCII files containing the first guesses solutions of the 3 SIPGI models: OPT, CRV and IDS
- Project
The ensemble of all data needed to achieve a data reduction
- Raw sensitivity function
The curve used to obtain the Sensitivity function
- Reduction unit
A collection of data of the target acquired with the same instrument configuration
- Sensitivity function
The smoothed curve used to convert spectra from ADU to flux units (erg cm-2 s-1 Å -1 )
- Spectro-photometric standard
The ASCII file which contains the spectrum of a standard stars
- Stellar template
The ASCII file which contains the theoretical spectrum of stars (arbitrary units)
- WIN
The Window Table: FITS table containing the description of the slits and information about detected objects
- WLEN END
Float FITS keyword in the header of GRS and EXR tables, which defines the ending wavelength (Å) of 2D and 1D extracted spectra
- WLEN START
Float FITS keyword in the header of GRS and EXR tables, which defines the starting wavelength (Å) of 2D and 1D extracted spectra
- Workspace
The main SIPGI environment