General description: Each ft file contains one of the 120 spectra from the MARVELS1 instrument. Both stellar spectra and calibration spectra get trimmed and copied to this directory for later use.
Naming convention: For weighting purposes, a copy without the slit profile illumination correction divided out is retained, and is named ft_noFlat_SZZZ_MARVELS1.YYYY-MM-DDTRR:NN:CC.CCC.fits, where ZZZ is a 3-digit spectrum number from 1-120, and YYYY-MM-DDTRR:NN:CC.CCC is a standard IRAF-compatible calendar timestamp in UTC where YYYY is the year, MM is the month, DD is the day, RR is the hour, NN is the minute, CC.CCC is the seconds field.
The final copy with illumination correction done is named ft_SZZZ_MARVELS1.YYYY-MM-DDTRR:NN:CC.CCC.fits, where ZZZ is a 3-digit spectrum number from 1-120, and YYYY-MM-DDTRR:NN:CC.CCCis a standard IRAF-compatible calendar timestamp in UTC, as above.
Approximate size: 0.5 Mbytes.
File type: FITS
Read by products:
Written by products: reduceMARVELS
| HDU0 | 4096 x NPIX float image | Counts in ADU |
SIMPLE FITS standard BITPIX type NAXIS number of axes NAXIS1 width NAXIS2 height EXTEND PCOUNT GCOUNT DATE_FH UT of header creation (YYYY:DAY:HH:MM:SS) FILENAME Name of Output File DATE Date Format is YYYY-MM-DD TIME Start of exposure ORIGIN FITS file originator INSTRUME name of instrument acquiring data DETECTOR name of CCD OBSERVAT Name of Observatory TELESCOP Name of Telescope OBSERVER ID of Observer Taking Data JD Julian date at start of observation MJD Modified Julian date FCJD Flux centered Julian date ACQTYPE type of CCD exp. (Light / Dark / Bias) OBSTYPE type of obs. (science / engineering) DATAMODE Disposition of data (i.e. save/discard) USERNOTE Optional note made by user about obs. UTC-OBS UTC of Start of Exp. UTC-END UTC of End of Exp. LST-OBS LST of Start of Exp. CARTID Cartridge ID no. PLATEID APO Plate ID No. OBJECT Nickname for plate (eg. 51PEG) EXPTYPE Exp. type keyword (from observing GUI) EXPTIME Length of Exp. (seconds) OBSFLAG Exp. Quality Flag (OK/UNSURE/JUNK) FOCUS Focus piston (in microns) BUNIT data units are Analog to Digital convert Units GAIN electrons per ADU RDNOISE Readout noise st.dev. in electrons per pixel RDRATE Readout rate in kHz RDPORT Port from which CCD is being read (A/B/C/D) READMODE Readout mode number READTIME Length of Readout (seconds) READNOIS Readout noise st.dev. in electrons per pixel READRATE Readout rate in kHz READPORT Port from which CCD is being read (A/B/C/D) CCD_ATTN Analog Attenuation set for CCD CCDSEC Section of CCD IN USE CRYOCOOL Status of CrycoCooler (1=ON/0=OFF) CCDTEMP CCD Chip Temp. in Deg. Celsius CCDPRES CCD Dewar Pressure in torr CCDSHUT Shutter Status During Exposure (1=OPEN/0=CLOSED ICEL-ID Unique Name of I2 Cell ICEL-T Mean I2 Temp. in Deg. Celsius ICEL-RMS RMS Temp. During Exp. in Deg. Celsius ICEL-POS I2 Cell Pos. (IN/OUT) ECEL-ID Unique Name of empty I2 Cell ECEL-T Mean empty Cell Temp. in Deg. Celsius ECEL-RMS Empty Cell RMS Temp. in Deg. Celsius ECEL-POS Empty I2 Cell Pos. (IN/OUT) DEWPOINT weatherData (dewpoint) DEWDEP weatherData (dewpointDep) DUSTA weatherData (dusta) DUSTB weatherData (dustb) DUSTC weatherData (dustc) DUSTD weatherData (dustd) GUSTD weatherData (gustd) HUMIDITY weatherData (humidity) HUMIDOUT weatherData (humidout) PRESSURE weatherData (pressure) WINDD weatherData (windd) WINDS weatherData (winds) FBRPOS Fiber Position (TELE/CALI/NONE) PHAS1 Mean Phase of Int. During Exp. (radians) PHASRMS1 Mean Phase RMS of Int. During Exp. (radians) DENS1 Mean Fringe Density of Int. During Exp. (pix/fr DENSRMS1 Mean Fringe Density RMS of Int. During Exp. (pi TILT1 Mean Tilt of Fringes During Exp. (pix) TILTRMS1 Mean Tilt RMS of Fringes During Exp. (pix) ALARM_1 Obs. event alarm ALARM_2 DC agent alarm ALARM_3 DAS alarm RA RA of tel. boresight in DEGREES DEC DEC of tel. boresight in DEGREES EPOCH Epoch of Coordinates. EQUINOX Equinox of Coordinates. AZ Azimuth (encoder) of tel. ALT Altitude (encoder) of tel. ROTPOS User spec. rotation angle SHUTTERA Shutter A: Sky: 0=closed, 1=open SHUTTERB Shutter B: Laser: 0=closed, 1=open THARINT ThAr Lamp Intensity (0-100, in integers) TUNGINT Tung Lamp Intensity (0-100, in integers) THARLAMP ThAr Lamp Status (ON/OFF) TUNGLAMP Tung Lamp Status (ON/OFF) DIFFUSER Diffuser (A) @ OUT FILTER Filter (C) @ Open2 IODINE-C Iodine-Cell (B) @ IN INDEXR-A steps from Datum of indexor A (Diffuser) INDEXR-B steps from Datum of indexor B (Iodine-Cell) INDEXR-C steps from Datum of indexor C (Filter) PMTAVG Average PMT counts during obs. PMTRMS RMS deviation of PMT counts during obs. PMTMIN Minimum PMT counts during obs. PMTMAX Maximum PMT counts during obs. PMTMSINT PMT integration time in milli-seconds PMTCOADD number of PMT integrations co-added PMTUPDAT seconds exposure between each PMT reading T1 Mean Temp. of North in deg. Celsius T2 Mean Temp. of South in deg. Celsius T3 Mean Temp. of East in deg. Celsius T4 Mean Temp. of West in deg. Celsius T5 Mean Temp. of Top in deg. Celsius T6 Mean Temp. of Bottom in deg. Celsius T7 Mean Temp. of CCD skin in deg. Celsius T8 Mean Temp. of CCD house in deg. Celsius T1RMS RMS Temp. of North in deg. Celsius T2RMS RMS Temp. of South in deg. Celsius T3RMS RMS Temp. of East in deg. Celsius T4RMS RMS Temp. of West in deg. Celsius T5RMS RMS Temp. of Top in deg. Celsius T6RMS RMS Temp. of Bottom in deg. Celsius T7RMS RMS Temp. of CCD skin in deg. Celsius T8RMS RMS Temp. of CCD house in deg. Celsius T1MIN min. Temp. of North in deg. Celsius T2MIN min. Temp. of South in deg. Celsius T3MIN min. Temp. of East in deg. Celsius T4MIN min. Temp. of West in deg. Celsius T5MIN min. Temp. of Top in deg. Celsius T6MIN min. Temp. of Bottom in deg. Celsius T7MIN min. Temp. of CCD skin in deg. Celsius T8MIN min. Temp. of CCD house in deg. Celsius T1MAX max. Temp. of North in deg. Celsius T2MAX max. Temp. of South in deg. Celsius T3MAX max. Temp. of East in deg. Celsius T4MAX max. Temp. of West in deg. Celsius T5MAX max. Temp. of Top in deg. Celsius T6MAX max. Temp. of Bottom in deg. Celsius T7MAX max. Temp. of CCD skin in deg. Celsius T8MAX max. Temp. of CCD house in deg. Celsius T9 Mean Temp. of Iodine_Cell in deg. Celsius T10 Mean Temp. of ifm_Bottom in deg. Celsius T11 Mean Temp. of ifm_Top in deg. Celsius T12 Mean Temp. of Center in deg. Celsius T13 Mean Temp. of Grating in deg. Celsius T14 Mean Temp. of CCD_area in deg. Celsius T15 Mean Temp. of Input in deg. Celsius T16 Mean Temp. of Ambient in deg. Celsius T9RMS RMS Temp. of Iodine_Cell in deg. Celsius T10RMS RMS Temp. of ifm_Bottom in deg. Celsius T11RMS RMS Temp. of ifm_Top in deg. Celsius T12RMS RMS Temp. of Center in deg. Celsius T13RMS RMS Temp. of Grating in deg. Celsius T14RMS RMS Temp. of CCD_area in deg. Celsius T15RMS RMS Temp. of Input in deg. Celsius T16RMS RMS Temp. of Ambient in deg. Celsius T9MIN min. Temp. of Iodine_Cell in deg. Celsius T10MIN min. Temp. of ifm_Bottom in deg. Celsius T11MIN min. Temp. of ifm_Top in deg. Celsius T12MIN min. Temp. of Center in deg. Celsius T13MIN min. Temp. of Grating in deg. Celsius T14MIN min. Temp. of CCD_area in deg. Celsius T15MIN min. Temp. of Input in deg. Celsius T16MIN min. Temp. of Ambient in deg. Celsius T9MAX max. Temp. of Iodine_Cell in deg. Celsius T10MAX max. Temp. of ifm_Bottom in deg. Celsius T11MAX max. Temp. of ifm_Top in deg. Celsius T12MAX max. Temp. of Center in deg. Celsius T13MAX max. Temp. of Grating in deg. Celsius T14MAX max. Temp. of CCD_area in deg. Celsius T15MAX max. Temp. of Input in deg. Celsius T16MAX max. Temp. of Ambient in deg. Celsius EXTVER Number assigned to the FITS extension. BZERO Data is unsigned short integers O_BZERO Original Data is Unsigned Integer VERSION Reduction Software version number E_HVERS Header keyword version number E_SPMODE Set pipeline mode to this instrument E_ORIENT Reorientation flag for extraction E_XLO Lowest X index to extract (0 base) E_YLO Lowest Y index to extract (0 base) E_XHI Highest X index to extract (0 base) E_YHI Highest Y index to extract (0 base) E_GAIN Gain (electrons/ADU) E_READN Read noise (electrons) E_BACKG E_TIME Exposure time (seconds) E_SPCSTR Spectrum Number in String Form, starting at S001 E_SPECNO Spectrum Number in numeric Form HISTORY Lists processing that has been done END