OBSERVAT= 'ORM     '           / Name of observatory                            
SLATEL  = 'LP10.0  '           / Telescope name known to SLALIB
TELESCOP= 'GTC     '           / Telescope id.
LATITUDE=               28.762 / [deg] Telescope latitude, +28:45:53.2          
LONGITUD=            17.877639 / [deg] Telescope longitude, +17:52:39.5
HEIGHT  =                 2348 / [m] Height above sea level
OBSGEOZ =          969439.1412 / [m] Observation Z-position 
OBSGEOX =          5753296.428 / [m] Observation X-position
OBSGEOY =          3005451.209 / [m] Observation Y-position
INSTRUME= '%(megara.name)'           / Name of the Instrument
FSTATION= '%(megara.focalstation)'/ Focal station of observation
SPECUNIT= '%(megara.spec.name)'/ Spectrograph unit
SPECSOUR= '%(megara.spec.source)'/ Spectrograph light source
PLATESCA=             1.502645 / [d/m] Platescale 5.41 arcsec/mm) 
ORIGIN  = '%(control.name)'           / FITS file originator 
PROP_ID = '%(proposal.id)'           / Proposal identification. 
PROP_PI = '%(proposal.pi_id)' / PI of proposal. 
OBSERVER= '%(ob.observer)' / Name of Observer           
CAT-NAME= '' / Target input-catalog name
CAT-RA  = 'UNDEF   '           / Target Right-Ascension
CAT-DEC = 'UNDEF   '           / Target Declination
CAT-EPOC=               2000.0 / Target epoch of proper motions
CAT-EQUI= 'J2000.0 '           / Equinox of target coordinates         
OBJECT  = '%(ob.object)' / Name of observed object
PARALLAX=                  0.0 / [arcsec] Target Parallax
RADVEL  =                  0.0 / [km/s] Target radial velocity
PM-RA   =                  0.0 / [s/yr] Target proper-motion RA 
PM-DEC  =                  0.0 / [arcsec/yr] Target proper-motion 
BUNIT   = 'ADU     '           / Unit of the array of image data
RUN     = '%(control.runid)'     / Run number
DATE    = '%(control.date)' / Date FITS file was generated
DATE-OBS= '%(megara.spec.detector.dateobs)' / Date of the begin of the observation
MDJ-OBS = '%(megara.spec.detector.mjdobs)' / MJD of the begin of the observation
AIRMASS = '%(pointing.airmass)' / Effective mean airmass 
OBS_MODE= '%(ob.mode)'     / Observing mode id.
OBSTYPE = '%(megara.spec.imagetype)' / Type of observation, e.g. TARGET
IMAGETY = '%(megara.spec.imagetype)' / Type of observation, e.g. object 
DEC     = '%(pointing.dec)' / DEC of the instrument scientific aperture 
RA      = '%(pointing.ra)' / RA of the instrument scientific aperture
VPH     = '%(megara.spec.wheel.active.uid)' / VPH id.
VPHM    = '%(megara.spec.wheel.active.name)' / VPH name
READSCHM= '%(megara.spec.detector.readscheme)'/ Read-out scheme of the detector                
READMODE= '%(megara.spec.detector.readmode)'/ Detector read-out mode
EXPOSED = '%(megara.spec.detector.exposed)' / [s] Time between correlated reads
READNOIS= 10 / Readout noise in electrons per pixel
GAIN    = 10 / Electrons per ADU
