The names of all pipeline products follow a certain naming convention. This is done to have human-readable rather than technical file names. The naming scheme has been chosen to have the type of product, its date of creation, and its pipeline-relevant parameter values all recognizable from the product name.

Since the begin of period 75 (April 2005), both science and calibration product files are renamed. (Actually, there was a transition phase extending for some instruments from April towards the end of the year 2005).

Before that date only calibration products followed the common scheme which is described here. (Some instruments had their own naming scheme which is described below, if applicable).

The general format of user-oriented product file names is the same for all VLT/VLTI instruments.

Instrument code

All pipeline product names start with two letters which are specific for the instrument. For instance: UVES product names start with 'UV', VISIR names with 'VR'.

Type of product

Next, the product type is coded. The full value is coded in the fits header key HIERARCH.ESO.PRO.CATG. A short form of this tag is coded in four characters being unique per instrument:

1st letter M or P calibration product   S science product   G general calibration product (as of P82) 2nd to 4th letter ... type of product

top Calibration Products

Code	Type of file	Name Structure
MBIA	master bias	F1_MBIA_<date>#_C<chip>_<R>_<bin>
MDRK	master dark	F1_MDRK_<date>#_C<chip>_<R>_<bin>
MSFI*	master screen flat (IMG)	F1_MSFI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
MKFI	master sky flat (IMG)	F1_MKFI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
MNFI	master night flat (IMG)	F1_MNFI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PSTI	reduced standard star (IMG)	F1_PSTI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PZPI	table with identified standard stars (IMG)	F1_PZPI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PPBI	background of reduced standard star image(IMG)	F1_PPBI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PSRI	table with sources found (IMG)	F1_PSRI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
PFLL*	reduced lamp CHECK data (LSS)	F1_PFLL_<date>#<lamp>_G<grism>_<filt>_S<slit>C<chip><R>_<bin><coll>
MNFL	normalized master flat field (LSS)	F1_MNFL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PWCL	dispersion coefficients (LSS)	F1_PWCL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PSRL	spectral resolution table (LSS)	F1_PSRL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PRLL	reduced arc lamp image (LSS)	F1_PRLL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PWML	wavelength map image (LSS)	F1_PWML_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PSLL	slit location table (LSS)	F1_PSLL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PSOL	line shifts from sky lines (STD-LSS)	F1_PSOL_<date>#_G<grism>_<filt>_S<slit>_<bin><_w><coll>
PWSL	wavelength map image (STD-LSS)	F1_PWSL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PDCL	dispersion coefficients from sky line correction (STD-LSS)	F1_PDCL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PUKL	unmapped sky background (STD-LSS)	F1_PUKL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PMAL	mapped image (STD-LSS)	F1_PMAL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PMKL	mapped sky background (STD-LSS)	F1_PMKL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PUSL	unmapped image (STD-LSS)	F1_PUSL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PMSL	mapped image (STD-LSS)	F1_PMSL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
POTL	table with object positions (STD-LSS)	F1_POTL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PRKL	reduced sky spectrum (STD-LSS)	F1_PRKL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PRSL	reduced object spectra (STD-LSS)	F1_PRSL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
PREL	error of reduced object spectra (STD-LSS)	F1_PREL_<date>#_G<grism>_<filt>_S<slit>_C<chip>_<R>_<bin><coll>
MMSM	mapped master screen flat field (MOS)	F1_MMSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MMNM	mapped normalized master flat field (MOS)	F1_MMNM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MSFM	master screen flat field (MOS)	F1_MSFM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MNFM	normalized master flat field (MOS)	F1_MNFM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PWCM	dispersion coefficients (MOS)	F1_PWCM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSRM	spectral resolution table (MOS)	F1_PSRM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PRLM	reduced arc lamp image (MOS)	F1_PRLM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PWMM	wavelength map image (MOS)	F1_PWMM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSLM	slit location table (MOS)	F1_PSLM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PCCM	curvature coefficients table (MOS)	F1_PCCM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSMM	spatial map image (MOS)	F1_PSMM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
MNFS	normalized master flat field (LSS-like MOS)	F1_MNFS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PWCS	dispersion coefficients (LSS-like MOS)	F1_PWCS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSRS	spectral resolution table (LSS-like MOS)	F1_PSRS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PRLS	reduced arc lamp image (LSS-like MOS)	F1_PRLS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PWMS	wavelength map image (LSS-like MOS)	F1_PWMS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSLS	slit location table (LSS-like MOS)	F1_PSLS_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PSOM	line shifts from sky lines (STD-MOS)	F1_PSOM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PWSM	wavelength map image (STD-MOS)	F1_PWSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PDCM	dispersion coefficients from sky line correction (STD-MOS)	F1_PDCM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PUKM	unmapped sky background (STD-MOS)	F1_PUKM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PMAM	mapped image (STD-MOS)	F1_PMAM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PMKM	mapped sky background (STD-MOS)	F1_PMKM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PUSM	unmapped image (STD-MOS)	F1_PUSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PMSM	mapped image (STD-MOS)	F1_PMSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
POTM	table with object positions (STD-MOS)	F1_POTM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PRKM	reduced sky spectrum (STD-MOS)	F1_PRKM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PRSM	reduced object spectra (STD-MOS)	F1_PRSM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>
PREM	error of reduced object spectra (STD-MOS)	F1_PREM_<date>#_G<grism>_<filt>_S<mask>_C<chip>_<R>_<bin><coll>

* These files are only used for internal purpose (quality control) and are not distributed in the Service Mode DVDs.

where:
<date>=Observing date as YYMMDD, e.g. 030401
#=sequential counter, e.g. A, B ...
<grism>=Grism Name, e.g. 150I
<filt>=Filter Name without _, e.g. VBESS, uHIGH, FILT57120, or GG435
<slit>=Slit Width, e.g. 07
<mask>=MOS Checksum, e.g. p1955
<lamp>=Lamp Name, e.g. FlatBlue+1
<chip>=Chip number (1 or 2)
<R>=Readout mode, e.g. 100Khi (100Kps, 2ports, high gain) or 200Klo (200Kps, 2ports, low gain)
<bin>=Binning, e.g. 1x1
<coll>=Collimator, e.g. s(tandard) or h(igh resolution)

Examples

F1_MBIA_070515A_C1_100Khi_2x2.fits
F1_MDRK_070503A_C1_100Khi_2x2.fits
F1_MSFI_070515A_RBESS_C2_200Klo_2x2s.fits
F1_MKFI_070515A_IBESS_C2_200Klo_2x2s.fits

F1_PZPI_070515A_BBESS_C1_200Klo_2x2s.fits
F1_PSTI_070515A_BBESS_C1_200Klo_2x2s.fits
F1_PPBI_070515A_BBESS_C1_200Klo_2x2s.fits
F1_PSRI_070515A_BBESS_C1_200Klo_2x2s.fits

F1_PFLL_070511A_He1_G300V_GG435_S10C1100Khi_2x2s.fits

F1_MNFL_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits
F1_PRLL_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits
F1_PSLL_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits
F1_PSRL_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits
F1_PWCL_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits
F1_PWML_070515A_G1200B_free_S07_C1_100Khi_2x2s.fits

F1_MNFM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PCCM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PRLM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PSLM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PSMM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PSRM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PWCM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits
F1_PWMM_070515A_G300V_GG435_Sp42138_C2_100Khi_2x2s.fits

F1_MNFS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits
F1_PRLS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits
F1_PSLS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits
F1_PSRS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits
F1_PWCS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits
F1_PWMS_070502A_G300I_OG590_S0_C1_100Khi_2x2s.fits

F1_PDCM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_PMAM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_PMKM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_PMSM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_POTM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_PREM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits
F1_PRKM_070513A_G600V_GG435_Sm22954_C1_100Khi_2x2s.fits

top Static Calibrations

Code	Type of file	Name Structure
GSTI	standard star catalogue (imaging)	F1_GSTI_<date>#_<author>
GPHO	table with photometric coefficients for the CCD	F1_GPHO_<date>#_<CCD_name>
GGRS	table with grism parameters	F1_GGRS_<date>#_G<grism>_<filt>_<CCD_name>
GLIN	line catalogue	F1_GLIN_<date>#_G<grism>_<filt>

where:
<date>=Observing date as YYMMDD, e.g. 030401
#=sequential counter, e.g. A, B ...
<grism>=Grism Name, e.g. 150I
<filt>=Filter Name without _ or /, e.g. VBESS, uHIGH, FILT57120, or GG435
<author>= Author of the catalogue, i.e. stetson or landolt
<CCD_name>=name of the CCD, e.g. Marlene (in case of the grism tables, which are valid for both CCDs, it is NormaMarlene)

Examples

F1_GSTI_070327A_stetson.fits
F1_GPHO_070327A_Norma.fits
F1_GGRS_070327A_G600V_GG375_NormaMarlene.fits
F1_GLIN_061001A_1200B_free.fits

Code	Type of file	Template Name
SIMG	reduced science image (IMG)	F1_SIMG_<OB>_<DateTime>_C<chip>_<filt>_<bin><coll>
SPBI	background of reduced science image (IMG)	F1_PPBI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
SOTI	table with "good" objects (IMG)	F1_SOTI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
SSRI	table with all sources found (IMG)	F1_SSRI_<date>#_<filt>_C<chip>_<R>_<bin><coll>
SSOL	line shifts from sky lines (LSS)	F1_SSOL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SWSL	wavelength map from sky lines (LSS)	F1_SWSL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SDCL	corrected dispersion coefficients from sky lines (LSS)	F1_SDCL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SMAL	mapped science frame (LSS)	F1_SMAL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SMKL	mapped sky background (LSS)	F1_SMKL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SMSL	unmapped sky background (LSS)	F1_SMSL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SOTL	table with positions of object spectra (LSS)	F1_SOTL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SRKL	extracted sky background spectra (LSS)	F1_SRKL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SRSL	extracted object spectra (sky-corrected) (LSS)	F1_SRSL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
SREL	error of extracted object spectra (LSS)	F1_SREL_<OB>_<DateTime>_C<chip>_G<grism><filt>_S<slit>
PSOM	wavelength shifts from sky lines (LSS-like MOS)	F1_PSOM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SSOM	wavelength shifts from sky lines (MOS)	F1_SSOM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SWSM	wavelength map from sky lines (MOS)	F1_SWSM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SDCM	corrected dispersion coefficients from sky lines (MOS)	F1_SDCM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SMAM	mapped science frame (MOS)	F1_SMAM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SMKM	mapped sky background (MOS)	F1_SMKM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SUKM	unmapped sky background (MOS)	F1_SUKM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SUSM	unmapped science frame (MOS)	F1_SUSM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SMSM	mapped sky-corrected science frame (MOS)	F1_SMSM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SOTM	table with positions of object spectra(MOS)	F1_SOTM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SRKM	extracted sky background spectra (MOS)	F1_SRKM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SRSM	extracted object spectra (sky-corrected) (MOS)	F1_SRSM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>
SREM	error of extracted object spectra (MOS)	F1_SREM_<OB>_<DateTime>_C<chip>_G<grism><filt>_<mask>

where:
<F1>=Instrument Code, e.g., F1=FORS1
<OB>=OB Identification Number, e.g., 197375
<DateTime>=Observing date as YYYYMMDDTHH:MM:SS.SSS, e.g., 2005-05-16T04:35:41.758
<filt>=Filter Name without _, e.g. gHIGH, FILT57120, or GG435
<bin>=Binning, e.g. 1x1
<coll>=Collimator, e.g. s(tandard) or h(igh)
<grism>=Grism Name, e.g. 300V
<slit>=Slit Width, e.g. 07
<mask>=MOS Checksum, e.g. m2656
<chip>=Chip number (1 or 2)

Examples

F1_SIMG_280606_2007-05-14T01:18:43.679_C2_UBESS_2x2s.fits
F1_SPBI_280606_2007-05-14T01:18:43.679_C2_UBESS_2x2s.fits
F1_SOTI_280606_2007-05-14T01:18:43.679_C2_UBESS_2x2s.fits
F1_SSRI_280606_2007-05-14T01:18:43.679_C2_UBESS_2x2s.fits

F1_SDCL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SMAL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SMKL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SMSL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SOTL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SREL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SRKL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SRSL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SSOL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits
F1_SWSL_280218_2007-05-14T09:45:14.789_C2_G600VGG435_S10.fits

F1_SDCM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SMAM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SMKM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SMSM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SOTM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SREM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SRKM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SRSM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SSOM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SUKM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SUSM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits
F1_SWSM_206178_2007-05-16T00:52:51.017_C1_G300VGG435_p24439.fits