観測装置固有キーワードは、頭2文字を定められた装置IDとし、残り6文字を装置開発者が定義して利用する。その際可能な限り下記の略号表に従った記述で行う。装置固有キーワードの詳細はハワイ観測所の Web サイト
https://www.naoj.org/Observing/fits/ja/header/inst_keywords/
からたどれる各装置のWebページに辞書や説明が掲載されている。
略号表 (1/2) Abbreviation Meaning Category ----------------------------------------------------------------------- END END Action MID MIDdle Action STR STaRt Action HUM HUMidity Environment PRS PReSsure Environment TMP TeMPerature Environment WND WiND Environment BIN BINning Image PRD Partly Read Out Image
略号表 (2/2) Abbreviation Meaning Category ----------------------------------------------------------------------- AO Adaptive Optics Instrument APT APerTure Instrument DET DETector Instrument FLT FiLTer Instrument PIX PIXel Instrument PX PiXel Instrument RET RETarder Instrument SLT SLiT Instrument ANG ANGle Statistics/Unit AVE AVErage Statistics/Unit CEN CENter Statistics/Unit DIR DIRection Statistics/Unit DISP DISPersion Statistics/Unit FCT FaCTor Statistics/Unit LEN LENgth Statistics/Unit MAX MAXimum Statistics/Unit MED MEDian Statistics/Unit MIN MINimum Statistics/Unit MOD MODe Statistics/Unit PA Position Angle Statistics/Unit RES RESolution Statistics/Unit RNG RaNGe Statistics/Unit SD Standard Deviation Statistics/Unit SPC SPaCial/SPaCe Statistics/Unit SPD SPeeD Statistics/Unit SZ SiZe Statistics/Unit TYP TYPe Statistics/Unit VAL VALue Statistics/Unit WAV WAVelength Statistics/Unit WID WIDth Statistics/Unit ADC Atmospheric Dispersion Corrector Telescope AE Absolute Encoder Telescope AG AutoGuider Telescope AIRM AIR Mass Telescope AZ AZimuth Telescope CAL CALibration source Telescope CS CaSsegrain focus Telescope DEC DEClination Telescope DOM DOMe / enclosure Telescope EL ELevation Telescope ELBX Electric Terminal BoX Telescope FOC telescope FOCus Telescope FV Field Viewer Telescope IE Incremental Encoder Telescope IMR IMage Rotator Telescope INR INstrumental Rotator Telescope M2 Secondary Mirror Telescope M3 Tertiary Mirror Telescope NS NaSmith focus Telescope PF Primary Focus Telescope PM Primary Mirror Telescope PMA Primary Mirror Actuator Telescope POS POSition Telescope PRB PRoBe Telescope RA Right Ascension Telescope SECZ SECant of Zenith distance Telescope TEL TELescope Telescope TIP Tip/Tilt Telescope ZD Zenith Distance Telescope HST Hawaii Standard Time Time JD Julian Date Time LST Local Sidereal Time Time MJD Modified Julian Date Time UT Universal Time Time