| KeyWord | Revised | Category | importance | Alias (Distribution Service) | FormatC | FormatF | Unit | Recommend | Sample | Obsolete | Comment | Description | DescriptionJ |
| RA | 1998/12/14 | Object | Common | FITS.SBR.RA | %-12s | A12 | - | - | '01:01:02.003' | - | RA of telescope pointing (HH:MM:SS.SSS) | Right Ascension of telescope pointing. This value is based on an EQUINOX. Notice that this value dose NOT show accurate field center of an instrument. | 望遠鏡指向位置の赤経で、分点は項目 EQUINOX に記述されている。必ずしも観測装置の視野中心と一致する必要はない。 |
| RA2000 | 1998/12/14 | Object | Common | Toolkit | %-12s | A12 | - | - | '21:54:32.123' | - | RA(J2000) pointing (HH:MM:SS.SSS) | Right Ascension of pointing based on J2000 equinox. If telescope control system is based on the J2000, this value is equals to the value of keyword RA. Notice that this value dose NOT show accurate field center of the instrument. | 分点Ｊ２０００に準拠した望遠鏡指向位置の赤経。必ずしも観測装置の視野中心と一致する必要はない。 |
| RADECSYS | 1998/11/25 | Object | Common | Toolkit | %-8s | A8 | - | FK5 | 'FK5 ' | - | The equatorial coordinate system | The equatorial coordinate system used at observatory. FK5 is the default system at SUBARU. | すばるで用いている空間座標系の基準。推奨値、FK5。 |
| FOC-LEN | 1998/11/24 | Origin | Optional | - | %20.3f | F20.3 | mm | - | 100000.111 | - | Focal length of the telescope (mm) | Focal length of the telescope. | 望遠鏡の焦点距離。 |
| FOC-POS | 1998/12/14 | Origin | Common | FITS.#Inst.FOC-POS | %-12s | A12 | - | - | 'CASSEGRAIN' | - | Focus where the instrument is attached | Focus name where the instrument is attached. /PRIME/CASSEGRAIN/NASMYTH-IR/NASMYTH-OPT/COUDE/ | 観測装置が装着されている焦点名。 |
| FOC-VAL | 1999/03/01 | Origin | Common | FITS.SBR.FOC-VAL | %20.3f | F20.3 | mm | - | 100000.254 | - | Encoder value of the focus unit (mm) | Position of the telescope focus unit (secondary mirror, prime focus unit). | 望遠鏡の合焦に使用されるユニットの位置。 |
| F-RATIO | 1998/12/14 | Origin | Optional | - | %20.2f | F20.2 | - | - | 6.12 | YES | Monochromatic F-Ratio of the camera | Monochromatic F-Ratio of the instrument camera. | 装置のF値。 |
| OBSERVAT | 1999/03/01 | Origin | Common | Toolkit | %-20s | A20 | - | NAOJ | 'NAOJ ' | - | Observatory | Observatory where the data was taken. Recommended values are 'NAOJ ' or 'Natl.Astr.Obs.Japan'. | データの取得された観測所名。'NAOJ '或いは、'Natl.Astr.Obs.Japan'を使用すること。 |
| OBSERVER | 1999/03/01 | Origin | Common | FITS.#Inst.OBSERVER | %-50s | A50 | - | - | 'G.KOSUGI, et al.' | - | Name(s) of observer(s) | This keyword shows the name(s) of observer(s) who took the data. | 当該データを取得した観測者（グループ）。 |
| PROP-ID | 1998/11/25 | Origin | Common | FITS.#Inst.PROP-ID | %-8s | A8 | - | - | 'o98003 ' | - | Proposal ID | Proposal ID of the observation. | 観測プロポーザルID。 |
| TELESCOP | 1998/12/14 | Origin | Common | FITS.SBR.TELESCOP | %-30s | A30 | - | - | 'Subaru ' | - | Telescope/System which Inst. is attached | Subaru / Hilo Software Simulator / Hilo Optical Simulator / Mitaka Software Simulator / Mitaka Optical Simulator | データ取得に使用された望遠鏡・システム名。Subaru / Hilo Software Simulator / Hilo Optical Simulator / Mitaka Software Simulator / Mitaka Optical Simulator。 |
| POL-ANGn | 1999/03/01 | Polarimetry | Optional | - | %20.2f | F20.2 | degree | - | 45.01 | - | P.A. of n-th Polarizer (degree) | Position Angle (degree) of the n-th Polarizer. The angle for the north is 0 degree, and increases for eastwardrotation. | 偏光素子のセットされた位置角。北方向を０度とし、東回りに増加する。単位はdegree。 |
| POLARIZn | 1999/03/01 | Polarimetry | Polarimetry | - | %-30s | A30 | - | - | 'Polarizer01' | - | Identifier of n-th Polarizer | Name or identifier of n-th Polarizer. | ｎ番目の偏光素子の名前あるいはＩＤ。 |
| RET-ANGn | 1998/12/14 | Polarimetry | Polarimetry | - | %20.2f | F20.2 | degree | - | 30.12 | - | P.A. of n-th Retarder Plate (degree) | Position angle of n-th Retarder Plate | ｎ番目の波長板の回転角。単位は degree。 |
| RETPLATn | 1998/11/25 | Polarimetry | Polarimetry | - | %-30s | A30 | - | - | 'Retarder01' | - | Identifier of n-th Retarder Plate | Name or identifier of n-th Retarder Plate for Polarimetory | ｎ番目の波長板の名前あるいはＩＤ。 |
| APERTURE | 1998/12/14 | Spectroscopy | Optional | - | %-30s | A30 | - | - | 'Aperture01' | - | Identifier of the entrance aperture | This keyword shows an ID of the aperture mask. Detailed parameters of the aperture mask can be seen in an aperture list which is provided by the instrument group. | 用いられたAperture maskのIDを記述する。各Apertureの詳細なパラメータについては各観測装置グループが用意するAperture Listを参照の事。 |
| APTC-DEC | 1999/03/01 | Spectroscopy | Optional | - | %20.8f | F20.8 | degree | - | 138.28976543 | - | DEC of the aperture center (degree) | This keyword shows a declination of the aperture center (degree). A position described by 'APTC-RA' and this 'APTC-DEC'corresponds to that on the detector described by 'APTCPIX1' and 'APTCPIX2'. (See 'APTCPIX1' and 'APTCPIX2') | Aperture中心のDec.を記述する。単位はdegree。これとAPTC-RAで記述される位置が、検出器上ではAPTCPIX1,APTCPIX2に対応する。(APTCPIX1,APTCPIX2も参照の事) |
| APTCPIX1 | 1998/12/10 | Spectroscopy | Optional | - | %20.1f | F20.1 | pixel | - | 511.5 | - | Aperture center projected on det.(pix) | This keyword shows a position on the detector where a ray of 'WAVELEN' come from the aperture center was dropped. This is written in a unit of pixel along the first axis described by NAXIS1 keyword. | Aperture中心から来た波長WAVELENの光が落ちる検出器上の位置を記述する。NAXIS1で記述される軸に沿った値で、単位はpixel。 |
| APTCPIX2 | 1998/12/10 | Spectroscopy | Optional | - | %20.1f | F20.1 | pixel | - | 511.5 | - | Aperture center projected on det.(pix) | This keyword shows a position on the detector where a ray of 'WAVELEN' come from the aperture center was dropped. This is written in a unit of pixel along the second axis described by NAXIS2 keyword. | Aperture中心から来た波長WAVELENの光が落ちる検出器上の位置を記述する。NAXIS2で記述される軸に沿った値で、単位はpixel。 |
| APTC-RA | 1999/03/01 | Spectroscopy | Optional | - | %20.8f | F20.8 | degree | - | 23.45678901 | - | RA of the aperture center (degree) | 'APTC-RA' shows a right ascension of the aperture center (degree). A position described by 'APTC-DEC' and this 'APTC-RA' corresponds to a position on the detector described by 'APTCPIX1' and 'APTCPIX2'. (See 'APTCPIX1' and 'APTCPIX2') | Aperture中心のR.A.を記述する。単位はdegree。これとAPTC-DECで記述される位置が、検出器上ではAPTCPIX1,APTCPIX2に対応する。(APTCPIX1,APTCPIX2も参照の事) |
| APT-SIZE | 1998/12/14 | Spectroscopy | Optional | - | %20.3f | F20.3 | arcsec | - | 0.805 | - | Diameter of the aperture (arcsec) | This keyword shows a diameter of the aperture mask (arcsec). Detailed parameters of the aperture mask (e.g. shape and size) can be seen in an Aperture list which will be provided by the instrument group. (See also 'APERTURE'.) | Apertureの直径の大きさを記述する。単位はarcsec。詳しいApertureの形状等は装置ごとに用意されるAperture listを参照の事。(APERTUREの項も参照の事) |
| DISPAXIS | 1998/12/10 | Spectroscopy | Spectroscopy | - | %20d | I20 | - | - | 1 | - | Dispersion axis in frame | The number of axis (n of NAXISn) along to dispersion. | スペクトルの分散方向の軸番号（NAXISnのnに対応） |
| DISPERSR | 1998/12/10 | Spectroscopy | Spectroscopy | - | %-20s | A20 | - | - | 'Grizm500-6400' | - | Identifier of the disperser used | Identifier (Name, grooves, etc.) of the disperser used. | 使用している分散素子の名前など |
| SLIT | 1998/12/10 | Spectroscopy | Spectroscopy | - | %-20s | A20 | - | - | 'Longslit03' | - | Identifier of the entrance slit used | Identifier (Name, etc.) of the entrance slit used. | 使用しているスリットの名前 |
| SLTC-DEC | 1998/12/10 | Spectroscopy | Optional | - | %20.5f | F20.5 | degree | - | 188.73662 | - | slit center DEC at the EQUINOX (degree) | DEC corresponding to slit center described by the EQUINOX (degree) | EQUINOXで示される分点でのスリット中心の赤緯 |
| SLTCPIX1 | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.1f | F20.1 | pixel | - | 512.5 | - | Slit center projected on detector(pixel) | Slit center projected on detector at WAVELENGTH for the axis 1 (pixel) | 検出器上でのWAVELEN にあたる波長とスリット中心に相当する位置。第１軸について。 |
| SLTCPIX2 | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.1f | F20.1 | pixel | - | 512.5 | - | Slit center projected on detector(pixel) | Slit center projected on detector at WAVELENGTH for the axis 2 (pixel) | 検出器上でのWAVELENにあたる波長とスリット中心に相当する位置。第２軸について。 |
| SLTC-RA | 1998/12/10 | Spectroscopy | Optional | - | %20.5f | F20.5 | degree | - | -12.58243 | - | slit center RA at the EQUINOX (degree) | RA corresponding to slit center described by the EQUINOX (degree). | EQUINOXで示される分点でのスリット中心の赤経 |
| SLT-LEN | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.3f | F20.3 | arcsec | - | 65.255 | - | Length of the slit used (arcsec) | Length of the slit used. (arcsec) | スリットを天球面に投影したときの空間的な長さ (arcsec) |
| SLT-OBJP | 1998/12/14 | Spectroscopy | Optional | - | %20.3f | F20.3 | arcsec | - | 30.254 | - | Object position on the slit (arcsec) | Object's position on the slit (arcsec). The zero point is defined for each instrument. | スリット上の天体の位置（スリットに沿った方向）。原点は観測装置ごとに定める。 |
| SLT-PA | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.1f | F20.1 | degree | - | 33.3 | - | Slit Position Angle (degree) | Typical position angle of the slit during exposure (degree). 0 degree for the north, and increased for the east direction. | 露出中のスリットの典型的な位置角。北を０度とし、東回りに取った角度で表される。 |
| SLT-PEND | 1998/12/14 | Spectroscopy | Optional | - | %20.1f | F20.1 | degree | - | 32.2 | - | Slit PA at exposure end (degree) | Position angle of the slit at the end of exposure (degree). The method of defining the angle is the same with 'SLT-PA'. | 露出終了時のスリットの位置角。角度の定義は'SLT-PA'に同じ。 |
| SLT-PSTR | 1998/12/14 | Spectroscopy | Optional | - | %20.1f | F20.1 | degree | - | 34.4 | - | Slit PA at exposure start (degree) | Position angle of the slit at the start of exposure (degree). The method of defining the angle is the same with 'SLT-PA'. | 露出開始時のスリットの位置角。角度の定義は'SLT-PA'に同じ。 |
| SLT-WID | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.3f | F20.3 | arcsec | - | 0.155 | - | Width of the slit used (arcsec) | Width of the slit used. (arcsec) | 天球面に投影した時のスリット幅 (arcsec) |
| WAVELEN | 1998/12/10 | Spectroscopy | Spectroscopy | - | %20.4f | F20.4 | nm | - | 655.3278 | - | Wavelength at detector center (nm) | Central wavelength of focused on the detector (nm). | 観測されたデータの中心波長 |
| WAV-MAX | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.4f | F20.4 | nm | - | 6522.1234 | - | Longest wavelen. focused on detector(nm) | Longest wavelength focused on the detecrtor (nm). | 検出器に写っている波長の最大値。 |
| WAV-MIN | 1998/12/14 | Spectroscopy | Spectroscopy | - | %20.4f | F20.4 | nm | - | 6585.5432 | - | Shortest wavelen.focused on detector(nm) | Shortest wavelength focused on the detecrtor (nm). | 検出器に写っている波長の最小値。 |
| ADC | 1998/12/10 | Telescope | Optional | FITS.SBR.ADC | %20.3f | F20.3 | degree | - | 11.244 | - | ADC PA during exposure (degree) | Typical position angle of atmospheric dispersion compensator during exposure (degree). | 露出中の大気分散補償器の位置角の典型的な値。(degree) |
| ADC-END | 1998/12/10 | Telescope | Optional | FITS.SBR.ADC | %20.3f | F20.3 | degree | - | 12.929 | - | ADC PA at exposure end (degree) | Position angle of atmospheric dispersion compensator at the end of exposure (degree). | 露出終了時の大気分散補償器の位置角。(degree) |
| ADC-STR | 1998/12/10 | Telescope | Optional | FITS.SBR.ADC | %20.3f | F20.3 | degree | - | 12.989 | - | ADC PA at exposure start (degree) | Position angle of atmospheric dispersion compensator at the start of exposure (degree). | 露出開始時の大気分散補償器の位置角。 |
| ADC-TYPE | 1998/12/10 | Telescope | Optional | FITS.SBR.ADC-TYPE | %-20s | A20 | - | - | 'BLUE ' | - | ADC name/type if used | Identifier of atmospheric dispersion compensator used (BLUE, NONE). | 用いられた大気分散補償器の種類。（BLUE, NONE） |
| AG-PRB1 | 1999/05/10 | Telescope | Optional | FITS.SBR.AG-PRBR/AG-PRBX | %20.3f | F20.3 | mm | - | 25.234 | - | AG Probe position (r:mm,x:mm) | First axis component of auto guider's probe position (mm). (CASS/NAS:r:mm, PF:x:mm). | オートガイダーの位置の第１軸成分(mm)。主焦点ではＸ方向、その他の焦点では動径方向を意味する。 |
| AG-PRB2 | 1999/05/10 | Telescope | Optional | FITS.SBR.AG-PRBT/AG-PRBY | %20.3f | F20.3 | degree | - | 25.234 | - | AG Probe position (Theta:degree, y:mm) | Second axis component of auto guider probe position (CASS/NAS:Theta:degree, PF:y:mm). | オートガイダーの位置の第２軸成分。主焦点ではＹ方向、その他の焦点では回転方向を意味する。 |
| ALT-END | 1998/11/24 | Telescope | Optional | FITS.SBR.ALTITUDE | %20.5f | F20.5 | degree | - | 78.12345 | - | Altitude at exposure end (degree) | Altitude of telescope pointing at exposure end (degree). | 露出終了時の仰角。単位はdegree。多重露出フレームの場合は、最終露出終了時の仰角。 |
| ALTITUDE | 1998/11/24 | Telescope | Optional | FITS.SBR.ALTITUDE | %20.5f | F20.5 | degree | - | 78.23456 | - | Altitude of telescope pointing (degree) | Typical altitude of telescope pointing (degree). Altitude changes during the exposure. | 観測中の典型的な仰角。露出の中間時刻における仰角が望ましい。 |
| ALT-STR | 1998/11/24 | Telescope | Optional | FITS.SBR.ALTITUDE | %20.5f | F20.5 | degree | - | 78.15678 | - | Altitude at start exposure (degree) | Altitude of telescope pointing at exposure start (degree). | 露出終了時の仰角。単位はdegree。多重露出フレームの場合は、最初の露出開始の仰角。 |
| AO-FREQ | 1998/12/10 | Telescope | Optional | - | %20d | I20 | Hz | - | 10 | - | frequency of AO loop (Hz) | Frequency of AO control (Hz). Times per second the deformable mirror was transformed. | ＡＯの制御（波面補正）周波数（Hz）。可変形鏡を１秒間に変形させた（＝波面補正）回数。 |
| AO-TIP | 1999/03/01 | Telescope | Optional | - | %-8s | A8 | - | - | 'ON ' | - | Action of AO tip-tilt Mirror (ON/OFF) | Action of AO tip-tilt Mirror (ON/OFF) | ＡＯの tip-tilt 鏡を作動させたか否か（有／無）。値： 'ON ' または 'OFF ' |
| AO-WFS | 1998/12/14 | Telescope | Optional | - | %20.5f | F20.5 | - | - | 1.21111?? | - | sigma of residual wave front?? | sigma of residual wave front?? | ウエーブフロントセンサーでの補正後の残差?? |
| AZ-END | 1998/11/24 | Telescope | Optional | FITS.SBR.AZIMUTH | %20.5f | F20.5 | degree | - | -23.45678 | - | Azimuth angle at exposure end (degree) | Azimuth angle of telescope when an exposure ends (degree). North is 0, East is 90 degree. | 露出終了時の方位角。多重露出フレームの場合は、最終露出の終了時の方位角。北が０度、東が９０度。 |
| AZIMUTH | 1998/11/24 | Telescope | Optional | FITS.SBR.AZIMUTH | %20.5f | F20.5 | degree | - | 23.51111 | - | Azimuth of telescope pointing (degree) | Typical azimuth angle of the telescope during the exposure (degree). North is 0, and East is 90. | 露出中の典型的な方位角。北が０度、東が９０度。露出の中間時刻における方位角が望ましい。 |
| AZ-STR | 1998/11/24 | Telescope | Optional | FITS.SBR.AZIMUTH | %20.5f | F20.5 | degree | - | 23.56789 | - | Azimuth angle at exposure start (degree) | Azimuth angle of telescope when an exposure begins (degree). North is 0, East is 90 degree. | 露出開始時の方位角。多重露出フレームの場合は、最初の露出の開始時の方位角。北が０度、東が９０度。 |
| IMGROT | 1999/03/01 | Telescope | Optional | FITS.SBR.IMGROT | %20.3f | F20.3 | degree | - | 45.998 | - | Angle of the Image Rotator (degree) | This keyword shows a typical angle of the Image Rotator during the exposure (degree). (See 'IMR-END' and 'IMR-STR'.) The angle for the north is 0, and increases for eastwardrotation. The range of the angle is from 0 to 360 degree. | Image Rotatorの露出中の典型的な角度を記述する。単位はdegree。(IMR-END、IMR-STRも参照の事)。北の方角が０度、東回りで増加する。値の範囲は０度から３６０度である。 |