The following table contains brief descriptions of the FITS header keywords for each raw or processed frame in the LCOGT Archive. FITS header keywords with an 'L1'prefix are from Level 1 processing (quicklook or final reduction) and will not be present in raw data.
The columns in the following table are:
| Keyword | Format | Units | Description | Documentation |
|---|---|---|---|---|
| agcam | 55s | Camera used for autoguiding | Camera used for autoguiding | |
| agdec | 14.7f | deg | Declination of the guide star | Declination of the guide star |
| agfilst | 8s | Autoguider filter state | Autoguider filter state. One of: {DEPLOYED, STOWED, ERROR, UNKNOWN, (N/A)} | |
| agfilter | 55s | Autoguider filter | Common astrophysical name of the Autoguider filter or 'air' for no filter. | |
| agfiltid | 55s | Autoguider filter id | Autoguider filter id in the LCOGT filter name form of 'XXXX-YY-ZZZ' where 'ZZZ' is the filter set number | |
| agfocdmd | 14.7f | mm | Demanded autoguider focus position | Demanded autoguider focus position |
| agfocoff | 14.7f | mm | Autoguider relative focus offset | Observer/algorithm requested defocus term which records the differential between the primary CCD focal plane position and the AG focal plane relevant to the particular FITS image. If no autoguider is used or both instruments are at the same position relative to the optical focal plane, this term defaults to 0.000. e.g. if both primary CCD and auxiliary CCD are in focus this term is 0.0, but if an observer has requested a primary CCD defocus of +1.215 mm, while wanting an autoguider in focus, FOCOFFS = 1.215 and FOCAUX = -1.215. |
| agfocst | 20s | Autoguider focus state | Autoguider focus state. One of: {INVALID, UNKNOWN, INITIALISING, UNHOMED, HALTED, HOMED, INITIALIZED, MOVING, HOMING, INTERLOCKED, LIMITED, WARNING, FAILED} | |
| agfocus | 14.7f | mm | Autoguider focus position | Autoguider focus position |
| agfwhm | 14.7f | arcsec | Autoguider star FWHM | The full width, half maximum of the star in the autoguider |
| aggmag | 14.7f | mag | Autoguider guide star mag | Autoguider guide star mag |
| aglckfrc | 14.7f | % | Percentage of LOCKED autoguider frames | The percentage of autoguider exposures taken during the science frame that were LOCKED. |
| agmirdmd | 55s | mm | Demanded autoguider mirror position | Demanded autoguider mirror position |
| agmirpos | 55s | mm | Autoguider mirror position | Autoguider mirror position |
| agmirst | 12s | Autoguider mirror state | Autoguider mirror state. One of: {INVALID, UNKNOWN, INITIALISING, UNHOMED, HALTED, HOMED, INITIALIZED, MOVING, HOMING, INTERLOCKED, LIMITED, WARNING, FAILED} | |
| agmode | 8s | Autoguider mode | Autoguider mode. One of {OFF, ON, AUTO} | |
| agra | 14.7f | deg | Right Ascension of the guide star | Right Ascension of the guide star |
| agstate | 25s | Autoguider software state | Autoguider software state. One of: {null, READING_OUT, ABORTING, GUIDING_OPEN_LOOP, GUIDE_SOURCE_LOST_TEMP, GUIDE_SOURCE_LOST, FAILED, CONFIGURING, IDLE, GUIDING_CLOSED_LOOP, EXPOSING, INIT, ACQUIRING, TRKOK, ACQFAIL, NOSTAR, OFF} | |
| airmass | 11.7f | Effective mean airmass | Effective mean airmass (mean airmass for the center of the frame) | |
| altdmd | 14.7f | deg | Altitude axis demand | Altitude axis demand |
| altitude | 14.7f | deg | Altitude axis position | Altitude axis position |
| altstat | 8s | Altitude axis state | Altitude axis state: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF} | |
| amend | 11.7f | Airmass at end of observation | Airmass at end of observation (when the shutter closes) | |
| amstart | 11.7f | Airmass at the start of observation | Airmass at the start of observation (when the shutter opens) | |
| azdmd | 14.7f | deg | Azimuth axis demand position | Azimuth axis demand position |
| azimuth | 14.7f | deg | Azimuth axis position | Azimuth axis position |
| azstat | 8s | Azimuth axis state | Azimuth axis state: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF} | |
| biassec | 55s | binned pixel | Region of binned CCD for bias/overscan | Section of the recorded image containing overscan or prescan data. This will be in binned pixels if binning is done. Multiple regions may be recorded and specified, such as both prescan and overscan, but the first section given by this parameter is likely to be the one used during calibration. |
| blkairco | 55s | The maximum airmass allowed | The maximum airmass allowed for the observation. | |
| blkedate | yyyy:mm:dd hh:mi:ss.sss | UTC | The date when block will expire. | The date when block will expire. The value string for date uses the YYYY-MM-DDThh:mm:ss.sss format, following the FITS standard restriction of the ISO 8601 format. |
| blkmndst | 10.4f | deg | Minimum lunar distance req for block | Minimum acceptable distance from the moon allowed. |
| blkmnph | 10.6f | 0-1 | Maximum lunar phase required for block | Maximum lunar phase required for block. Moon phase between 0.0 (New moon) and 1.0 (Full moon). |
| blknomex | 10.1f | s | Nominal block execution time | Block nominal execution time based on number of exposures, filter changes, slews and any mosaicing options within the group. |
| blksdate | yyyy:mm:dd hh:mi:ss.sss | UTC | The date of the block start. | The date of the block start. The value string for date uses the YYYY-MM-DDThh:mm:ss.sss format, following the FITS standard restriction of the ISO 8601 format. |
| blkseeco | 55s | Minimum seeing required for block | Possible values are: ANY,ATROCIOUS, POOR,GOOD,EXCELLENT,NONE. Currently these are mapped to no seeing limit (ANY/ATROCIOUS), seeing <3.0" (POOR), seeing <1.3" (GOOD), seeing <0.8" (EXCELLENT). | |
| blktrnco | 55s | Minimum transparency required for block | The amount of transparency (cloud cover) that can be tolerated. | |
| blktype | 55s | The type of constraints from obs group | The type of constraints required by the observation group. Currently one of {MONITOR,FLEXIBLE,FIXED,NONE,UNKNOWN}. | |
| blkuid | 55s | Unique ID for the block. | Unique ID for the block. | |
| cat_dec | 12s | sDD:MM:SS.ss | Catalog Dec of the object | Catalog Declination of the object |
| cat_epoc | 10.1f | year | Catalog epoch of the object coord | The epoch (time) of the catalog co-ordinates. This is needed to apply the correct amount of proper motion to the target co-ordinates to get them to the current epoch of date. |
| cat_ra | 12s | HH:MM:SS.ss | Catalog RA of the object | Catalog Right Ascension of the object |
| catver | 55s | Ver no. of catalog data dictionary | Ver no. of catalog data dictionary | |
| ccdatemp | 13.7f | deg C | Actual CCD temperature | Actual CCD temperature |
| ccdsec | 55s | pixel | Region of the full CCD that was read out | The unbinned section of the logical CCD pixel raster covered by the amplifier readout in section notation. The section must map directly to the specified data section through the binning and CCD to image coordiante transformation. The image data section (DATASEC) is specified with the starting pixel less than the ending pixel. Thus the order of this section may be flipped depending on the coordinate transformation (which depends on how the CCD coordinate system is defined). |
| ccdsesig | 10.3f | mK | CCD temperature control servo error | CCD temperature control servo error |
| ccdstemp | 13.7f | deg C | Required CCD temperature | Required CCD temperature |
| ccdsum | 55s | CCD on-chip summing/binning | CCD on-chip summing given as two integer numbers. These define the summing of CCD pixels in the amplifier readout order. The first two numbers give the number of pixels summed in the serial and parallel directions respectively. | |
| ccdxpixe | 14.7e | m | Physical CCD pixel size along X | Unbinned physical size of pixels, in X direction. Projected pixel size on the sky in arcsec or wavelength is given by PIXSCALE. |
| ccdypixe | 14.7e | m | Physical CCD pixel size along Y | Unbinned physical size of pixels, in Y direction. Projected pixel size on the sky in arcsec or wavelength is given by PIXSCALE. |
| cd1_1 | 21.13e | deg/pix | Transformation matrix element | Change in RA per pixel along Axis 1 and evaluated at the reference pixel. Assuming no rotation and square pixels of the same size, this produces the values in CD1_1 and CD2_2 (and 0.0 in the other two as there is no skew/rotation). The signs of CD1_1/2_2 say which direction the values increase. For a "normal CCD" with North up and East left, CD1_1 is -ve and CD2_2 is +ve. |
| cd1_2 | 21.13e | deg/pix | Transformation matrix element | Change in RA per pixel along Axis 2 and evaluated at the reference pixel |
| cd2_1 | 21.13e | deg/pix | Transformation matrix element | Change in Dec per pixel along Axis 1 and evaluated at the reference pixel |
| cd2_2 | 21.13e | deg/pix | Transformation matrix element | Change in Dec per pixel along Axis 2 and evaluated at the reference pixel |
| cdelt1 | 19.10e | Pixel scale axis 1 | Pixel scale axis 1 | |
| cdelt2 | 19.10e | Pixel scale axis 2 | Pixel scale axis 2 | |
| confmode | 55s | Configuration mode for the camera | The current camera modestring defining the camera configuration. This is of the form: |
|
| confname | 55s | The name of the instrument configuration | The name of the instrument configuration used during the observations. | |
| cra | 20s | Sexagesimal version of RA | Sexagesimal version of RA | |
| crota2 | 13.7f | Image rotation | Image rotation | |
| crpix1 | 16.5f | Axis 1 reference pixel | Reference pixel along axis 1 of the full detector matrix. When possible, it is recommended to define the reference pixel (possibly with fraction if the accuracy is achieved) at the point where the telescope's optical axis intersects the detector. | |
| crpix2 | 16.5f | Axis 2 reference pixel | Reference pixel along axis 2 of the full detector matrix. When possible, it is recommended to define the reference pixel (possibly with fraction if the accuracy is achieved) at the point where the telescope's optical axis intersects the detector. | |
| crval1 | 13.7f | Value of reference pixel on axis 1 | Value of reference pixel on axis 1 | |
| crval2 | 13.7f | Value of reference pixel on axis 2 | Value of reference pixel on axis 2 | |
| ctype1 | 13s | Type of RA WCS projection | Type of RA WCS projection | |
| ctype2 | 13s | Type of Dec WCS projection | Type of Dec WCS projection | |
| darkcurr | 10.3f | e/sec | Detector dark current | Detector dark current |
| datadicv | 55s | Data dictionary ver in LCOGT pipeline | The value field shall contain a character string identifying the version number of this data dictionary that the file conforms to. | |
| datasec | 55s | binned pixel | Section of CCD containing data | Mapping of the CCD section to image coordinates. |
| date | yyyy-mm-dd hh:mi:ss | UTC | Date the FITS file was written | The UTC date and time the file was written (not the time of the observation). |
| date_obs | yyyy-mm-dd hh:mi:ss.sss | UTC | Start date and time of observation | The start date and time in the UTC system of the observation corresponding to the instant of shutter open. |
| day_obs | 8s | UTC | Date at start of local observing night | Date at start of local observing night. This is the date in the UTC timescale at 15:00 site local time, with the timezone offset from UTC calculated from the longitude divided by 15 and rounded to the whole hour (this is done to avoid daylight saving/summer time changes and problems). |
| dec | 14.7f | Declination at array center | Declination at array center | |
| dectel | 12s | sDD:MM:SS.ss | Dec where telescope is pointing | ero-padded and signed sexagesimal mean Declination of where telescope is pointing |
| dectrack | 10.4f | arcsec/s | Non-sidereal tracking in Dec | Non-sidereal tracking in Dec. These values should default to 0.0 in the POND and be passed down. |
| detectid | 55s | The name/serial number for the detector | The name/serial number for the detector | |
| detector | 55s | Type of the detector | Type of the detector in the instrument | |
| detsec | 55s | binned pixel | Section of the CCD for useful data | Detector data section (Required by DS9 for multi-amp). |
| detsize | 55s | pixel | Detector size | The logical unbinned size of the detector in section notation. Normally this would be the physical size of the CCD unless drift scanning is done. This is the full size even when subframe or binned readouts are done. |
| enc1stat | 8s | Enclosure shutter 1 state | Shutter 1 is the upper shutter in the case of a 1.0m Ash dome and the shutter closest to the pole in the case of a 0.4m Aqawan enclosure. One of a ShutterStatusCode enum: {OPEN, CLOSED, OPENING, CLOSING, STOPPED, ERROR, UNKNOWN} | |
| enc2stat | 8s | Enclosure shutter 2 state | Shutter 2 is the lower shutter in the case of a 1.0m Ash dome and the shutter furthest away from the pole in the case of a 0.4m Aqawan enclosure. One of a ShutterStatusCode enum: {OPEN, CLOSED, OPENING, CLOSING, STOPPED, ERROR, UNKNOWN} | |
| encaz | 14.7f | deg | Enclosure Azimuth | The Enclosure Azimuth for a rotating enclosure ('N/A' should be entered for a non-rotating enclosure) measured in decimal degrees westwards from the South. |
| encid | 55s | ID code of the telescope enclosure | ID code of the telescope enclosure | |
| enclosur | 55s | Name of the telescope enclosure | Name of the telescope enclosure | |
| encrligt | 10s | Enclosure red lights state | Enclosure red lights state | |
| encwligt | 10s | Enclosure white lights state | Enclosure white lights state | |
| engstate | 14s | Engineering override state | Whether the telescope is an engineering override state. One of: {ENABLED, DISABLED}. | |
| eopsrc | 55s | Source of Earth Orient. Param values | The source of the EOP (Earth Orientation Parameters) UT1-UTC, polar motion X & Y co-ordinates reported in UT1-UTC, POLARMOX, POLARMOY. This is usually the IERS Bulletin A which the TCS obtains by downloading from http://maia.usno.navy.mil/ser7/ser7.dat. | |
| equinox | 13.7f | Catalog equinox of the object coords | Because the coordinate system is ICRS, the Equinox keyword is not needed. | |
| etrigger | 55s | External trigger ID of ToO event | External trigger ID of Target of Opportunity event; e.g. VOevent number, GCN circular, etc. | |
| exptime | 14.6f | sec | Exposure time | The actual exposure time. Strictly, the difference between the time when the shutter closes (UTSTOP) and when the shutter opens (UTSTART). Before 2019-04-10, EXPTIME was the requested exposure time for 2m and 1m observations. |
| filter | 55s | Complete filter name | Concatenation of FILTER1--3, asterisk '*' separated list of all non air/clear filters. | |
| filter1 | 55s | The filter type in first filter wheel | The filter type in first filter wheel | |
| filter2 | 55s | The filter type in second filter wheel | The filter type in second filter wheel | |
| filter3 | 55s | The filter type in third filter wheel | The filter type in third filter wheel | |
| filteri1 | 11s | The filter ID in first filter wheel | LCOGT filter name of the form 'XXXX-YY-ZZZ' where 'ZZZ' is the filter set number (XXX). | |
| filteri2 | 11s | The filter ID in second filter wheel | LCOGT filter name of the form 'XXXX-YY-ZZZ' where 'ZZZ' is the filter set number (XXX). | |
| filteri3 | 11s | The filter ID in third filter wheel | LCOGT filter name of the form 'XXXX-YY-ZZZ' where 'ZZZ' is the filter set number (XXX). | |
| fitsfile | 55s | FITS file used by SExtractor | FITS file used by SExtractor | |
| fname | 55s | FITS file name | FITS file name | |
| focafoff | 14.7f | mm | Autofocus offset in focal plane | Autofocus term determined empirically through use of autofocus routines on the telescope sequencer. This value defaults to 0.0 and gets updated by the autofocus routine. Periodically, it will get absorbed into the telescope zero point and zeroed out. |
| focdmd | 14.7f | mm | Demanded focus position in focal plane | Demanded focus position in focal plane |
| focfloff | 14.7f | mm | Filter focus offset in focal plane | The filter-specific focus offset needed to bring that specific filter combination into focus. This is measured relative to 'air' i.e. no filters in the beam. |
| focinoff | 14.7f | mm | Instrument focus offset | Instrument focus offset. This is the offset accounts for instrument to instrument variations such as CCD backfocus, FWS thickness, OxBox height, and corrector power. It is defined to be 0.0 for a master calibration plate behind a reference corrector cell, will vary on the order of 0.5 mm, and is always in FP coordinates. |
| focoboff | 14.7f | mm | Observer focus offset/defocus in focal plane | Observer requested defocus. This value should default to 0.0 in the POND and be passed down. |
| focposn | 14.7f | mm | Actual focus position in focal plane | Actual focus position in focal plane |
| focstat | 12s | Focus state | Focus state. One of a MoveableState enum: {INVALID, UNKNOWN, INITIALISING, UNHOMED, HALTED, HOMED, INITIALIZED, MOVING, HOMING, INTERLOCKED, LIMITED, WARNING, FAILED} | |
| foctelzp | 14.7f | mm | Telescope default focus | Telescope default focus. This offset accounts for variations such as truss length and M2 thickness. It is set to a value which brings the master calibration plate into focus (FOCINOFF=0.0) or an arbitrary instrument (FOCINOFF<>0.0) into focus with FOCDMD=FOCPOSN=0.0. It is always in physical M2 coordinates. This is the nominal focus setpoint for the telescope upon which other offsets are based. It will generally be defined to bring the primary science instrument into focus, resulting in 0.0 instrument offset for that instrument. |
| foctemp | 14.7f | deg C | Temp in the focus compensation routine. | Temperature used in the focus compensation routine. |
| foctoff | 14.7f | mm | Thermal correction value for focus | The change in focus needed to correct for the change in tube length with temperature. |
| foczoff | 14.7f | mm | Zenith compression correction focus | Zenith compression correction focus |
| foldport | 10s | Fold mirror port | The port that the instrument fold mirror is pointed at/illuminating. One of: {CASSEGRAIN, 1, 2, 3, 4, 5, 6, 7, 8} (for 2m telescopes); {CASSEGRAIN, N, S, E, W} (for 0.4m & 1.0m telescopes) | |
| foldposn | 55s | (mm,deg) | Fold mirror position (r, theta) | Position of the instrument fold mirror along linear stage (r: in mm) for 0.4m and 2m stages and rotation of fold mirror (theta: degrees measured clockwise from pole from photon's perspective; 2m stage only, 'N/A' for 0.4m stage (which only has 1 axis of movement). |
| foldstat | 10s | Fold mirror state | Instrument fold mirror state. One of: {DEPLOYED, STOWED, ERROR, N/A} | |
| framenum | 10d | Running frame number | The running frame number. The Running frame number resets to 0001 at the start of each night, defined to be at 16:00 local time. Running frame number | |
| frmtotal | 10d | Total no. of exposures within molecule | Total number of exposures within the observation group (molecule) | |
| fsize | 10d | B | File size for the FITS image | File size for the FITS image |
| fwid | 20s | The ID of the filter wheel | LCOGT filter wheel name of the form 'fwXXY-ZZ' where XX is the (rounded) size of the filters held (in mm), Y is the filter wheel revision and ZZ is the instance of the particular filter wheel. | |
| gain | 10.2f | e/ADU | Detector gain | Detector gain |
| groupid | 55s | Name of the observing group | Name of the observing group given by the observer/proposer. | |
| hdrver | 55s | Version of the FITS Header keywords | Version of the FITS Header keywords | |
| hdu | 10d | Header Data Unit | Header Data Unit | |
| height | 10.2f | m | Altitude of the telescope | The elevation of the telescope above sea level measured in meters to the midpoint of the Declination axis. The position shall be in the WGS84 geodetic system. |
| icsver | 55s | The version number of the ICS | The version number of the Instrument Control Software | |
| insstate | 8s | The status of the instrument | The status of the instrument. One of: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF}. | |
| instrume | 12s | The name of the instrument used | LCOGT Standard instrument name. First letter designates detector manufacturer ('e'=e2v, 'f'=Fairchild, 'k'=Kodak, 't'=Texas Instruments), second letter designates controller manufacturer ('a'=Apogee, 'b'=SBIG, 'l'=LCOGT, 'm'=Merope, 'n'=Andor, 's'= Spectral) followed by a 2 digit running number. | |
| instype | 55s | Type of instrument | The LCOGT instrument class/type. Should be one of {0m4-SciCam, 0m8-SciCam, 1m0-SciCam-SBIG, 1m0-SciCam-Sinistro, Autoguider, ContextCam, LIHSP-Luca, LIHSP-iXon, 2m0-SciCam-Merope, 2m0-SciCam-Spectral, 2m0-FLOYDS-SciCam, 2m0-FLOYDS-AG, 0m4-LIHSP-Luca, 1m0-LIHSP-iXon, 1m0-LIHSP-FLI}. | |
| isstemp | 14.7f | deg C | Instrument Support Structure temperature | Instrument Support Structure (ISS; A&G Box on a 2m, OxBox on 1m) temperature |
| l1claerr | 14.7f | mag | Error on color-airmass coefficient | The error on the color-airmass coefficient reported in L1COLAIR. Set to 0.000 (or -1.0? XXX) if assumed value was used. |
| l1clasrc | 55s | Source of color-airmass coefficient | The source of the color-airmass coefficient reported in L1COLAIR and L1CLAERR. Must be one of {FIT_NIGHT, FIT_MULNIGHT, COMPUTED, FIXED, N/A} concatentated with (software name and version). FIT_NIGHT designates it was fitted to data from the same night and telescope as the current image, FIT_MULNIGHT designates it was fitted to data from multiple night (e.g. season average), COMPUTED indicates the value was computed based on measured or assumed wavelength response and assumed SED and FIXED denotes value was fixed at some nominal value. Defaults to 'N/A' if not known, i.e. if L1COLAIR and L1CLAERR are -99.0 | |
| l1colair | 14.7f | mag | Color-airmass coefficient | The color-airmass coefficient d_i relating the response in filter i to the color of the star C_ik and airmass X_k. |
| l1colerr | 14.7f | mag | Error on color coefficient | The error on the color coefficient reported in L1COLOR. Set to 0.000 (or -1.0? XXX) if assumed value was used. |
| l1color | 14.7f | mag | Color coefficient | The color coefficient b relating the response in filter i to the color of the star C_k. |
| l1coloru | 55s | Color used for calibration | The color pair of two filters used for the calibration coefficient b_i relating the response in filter i to the color of the star C_ik. The color used should, in general include the filter that was used. | |
| l1colsrc | 55s | Source of color coefficient | The source of the color coefficient reported in L1COLOR and L1COLERR. Must be one of {FIT_NIGHT, FIT_MULNIGHT, COMPUTED, FIXED, N/A} concatenated with (software name and version). FIT_NIGHT designates it was fitted to data from the same night and telescope as the current image, FIT_MULNIGHT designates it was fitted to data from multiple night (e.g. season average), COMPUTED indicates the value was computed based on measured or assumed wavelength response and assumed SED and FIXED denotes value was fixed at some nominal value. Defaults to 'N/A' if not known, i.e. if L1COLOR and L1COLERR are -99.0 | |
| l1ellip | 14.7f | Mean image ellipticity (1-B/A) | Mean image ellipticity (1-B/A) | |
| l1ellipa | 14.7f | deg | Position angle of mean image ellipticity | Position angle of mean image ellipticity |
| l1fwhm | 14.7f | arcsec | Frame FWHM | Frame FWHM calculated from the SExtractor detections with very small objects and those with FLAGS != 0 weeded out. (e.g., a clipped and filtered average over all suitable sources in the frame.) |
| l1idbias | 55s | Filename of bias frame used | Filename of bias frame used | |
| l1iddark | 55s | Filename of dark frame used | Filename of dark frame used | |
| l1idflat | 55s | Filename of flatfield frame used | Filename of flatfield frame used | |
| l1idfrng | 55s | Filename of fringe frame used | Filename of fringe frame used | |
| l1idmask | 55s | Filename of mask file used | Filename of mask file used | |
| l1idshut | 55s | Filename of shutter correction frame | Filename of shutter correction frame | |
| l1mean | 20.11f | ADU | Mean of frame background | Mean of frame background |
| l1median | 20.11f | ADU | Median of frame background | Median of frame background |
| l1photom | 14.7f | mag/airmass | Estimated extinction | Estimated extinction |
| l1phterr | 14.7f | Error on Estimated Extinction | The error on the atmospheric extinction reported in L1PHOTOM. Set to 0.000 (or -1.0? XXX) if assumed value was used. | |
| l1phtsrc | 55s | Source of Estimated Extinction | The source of the atmospheric extinction coefficient reported in L1PHOTOM and L1PHTERR. Must be one of FIT_NIGHT|FIT_MULNIGHT|COMPUTED|FIXED|N/A (+software name and version+). FIT_NIGHT designates it was fitted to data from the same night and telescope as the current image, FIT_MULNIGHT designates it was fitted to data from multiple night (e.g. season average), COMPUTED indicates the value was computed based on measured or assumed wavelength response and assumed SED and FIXED denotes value was fixed at some nominal value. Defaults to N/A if not known, i.e. if L1PHOTOM and L1PHTERR are -99.0. | |
| l1phtver | 55s | Version of Phot. Calib module | The version number of the module performing photometric calibration on the data. | |
| l1pubdat | yyyy-mm-dd hh:mi:ss | UTC | Date the frame becomes public | The UTC date the frame becomes public. In the case of 'private' data this is normally 1 year after the time the frame was taken. In the case of 'public' data, it is equal to the DATEOBS. |
| l1pubprv | 12s | Public or private data? | Public or private data? | |
| l1qcatst | 10d | Catalog production status (bitmask;-1=Unknown,0=OK) | A signed integer bitmask for all parameters which affect the catalog generation process and quality. The bitmask is comprised of:
|
|
| l1qcver | 55s | Version of QC module | Version of QC module | |
| l1qimgst | 10d | Image taking status (bitmask;-1=Unknown,0=OK) | A signed integer bitmask for all parameters which affect an entire frame, including weather conditions, enclosure, telescope and instrument physical status. The bitmask is comprised of:
|
|
| l1qnight | 10d | Photom. calib. night quality (-1=Unknown,0=GOOD) | A signed integer value giving the photometric calibration code's assessment of the quality if the night and data. The possible values are:
|
|
| l1qobcon | 12s | Observing constraints satisfied? | String concatenation of one of {T(rue), F(alse), U(nassessed)} for each of the observer-specified observing constraints in order that they appear in the header:
|
|
| l1qphtst | 10d | Photometric calibration status (bitmask;-1=Unknown,0=OK) | A signed integer bitmask for all parameters which affect the photometric calibration process and quality. The bitmask is comprised of:
|
|
| l1refair | 14.7f | Reference airmass value | The reference standard airmass value X_0 used. This should correspond to the average mean airmass of objects observed during regular observing. 1.3 is the fixed SDSS standard. | |
| l1refcat | 55s | Reference photometric catalog used | The photometric reference catalog that was used to provide the standard magnitudes. | |
| l1refcol | 14.7f | mag | Reference color value | The reference "cosmic color" value C_0i used. It is proposed that SDSS values will be used. |
| l1sigma | 20.11f | ADU | Standard dev of frame background | Standard dev of frame background |
| l1skybrt | 14.7f | mag/arcsec^2 | Estimated sky brightness | Estimated sky brightness |
| l1statbi | 10d | Status flag for bias frame correction | The flag is 0 if the bias frame correction was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1statda | 10d | Status flag for dark frame correction | The flag is 0 if the dark frame correction was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1statfl | 10d | Status flag for flatfield correction | The flag is 0 if the flatfield correction was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1statfr | 10d | Status flag for fringe correction | The flag is 0 if the fringe correction was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1statov | 10d | Status flag for overscan correction | The flag is 0 if the overscan correction was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1stattr | 10d | Status flag for overscan trimming | The flag is 0 if the overscan trimming was not performed, 1 if it was performed and -1 if the operation is not applicable. | |
| l1zp | 14.7f | mag | Instrumental zeropoint | Instrumental zeropoint |
| l1zperr | 14.7f | mag | Error on Instrumental zeropoint | Error on Instrumental zeropoint |
| l1zpsrc | 55s | Source of Instrumental zeropoint | The source of the Instrumental zeropoint reported in L1ZP and L1ZPERR. Defaults to 'N/A' if not known, i.e. if L1ZP & L1ZPERR are -99.0. | |
| lapsrate | 14.7f | Assumed value written by timecorrect.py | Assumed value written by timecorrect.py | |
| latitude | 13.7f | deg N | Latitude of the telescope | Geodetic latitude of the telescope in decimal degrees with North +ve. The position shall be in the WGS84 geodetic system. |
| longitud | 13.7f | deg E | Longitude of the telescope | Geodetic longitude of the telescope in decimal degrees with East +ve. The position shall be in the WGS84 geodetic system. |
| lst | 11s | HH:MM:SS.ss | Local Sideral Time at observation start | Local Sideral Time at observation start |
| m1cover | 8s | Primary mirror (M1) cover state | Primary mirror (M1) cover state. One of MirrorCoverState enum: {DEPLOYED, STOWED, ERROR, UNKNOWN, (N/A)} | |
| m1hrtmn | 8s | Primary mirror (M1) Hartmann screen state | Primary mirror (M1) Hartmann screen state. One of MirrorCoverState enum: {DEPLOYED, STOWED, ERROR, UNKNOWN, (N/A)} | |
| m1temp | 14.7f | deg C | Primary mirror temperature | Primary mirror temperature |
| m2pitch | 14.7f | arcsec | Secondary mirror (M2) vertex tilt in pitch | Amount of collimation in the secondary mirror (M2) tilt about vertex in pitch direction. |
| m2roll | 14.7f | arcsec | Secondary mirror (M2) vertex tilt in roll | Amount of collimation in the secondary mirror (M2) tilt about vertex in roll direction. |
| maxlin | 10.1f | ADU | Detector non-linearity level | Detector non-linearity level |
| mjd_obs | 19.8f | UTC days | Modified Julian Date of obs. start | This will be an exact conversion of the DATE-OBS value expressed as a Modified Julian Date (MJD: JD - 2,400,000.5). Five decimals are required for an accuracy of one second and 8 decimals for one millisecond. |
| molfrnum | 10d | Exposure no. within the molecule | Exposure number within the observation group (molecule) | |
| molnum | 10d | Number of the molecule | The current Molecule (a homogeneous set of exposures within an observation block which have the same configuration (exposure time, target pointing, defocus and filter)) number. | |
| moltype | 55s | Type of observation group (molecule) | Type of observation group (molecule) | |
| moluid | 55s | The molecule unique id from POND. | The molecule unique id assigned by the POND. | |
| moonalt | 14.7f | deg | Lunar altitude | Lunar altitude above horizon |
| moondist | 14.7f | deg | Lunar distance from target | Lunar distance from target |
| moonfrac | 14.7f | Fraction of the moon illuminated | Fraction of the moon illuminated. Ranges from 0.0 (New Moon) to 1.0 (Full Moon). | |
| moonstat | 8s | Moon position at observation start | Moon position at the start of the observation [UP, DOWN] | |
| naxis1 | 10d | Number of array columns | Number of array columns | |
| naxis2 | 10d | Number of array rows | Number of array rows | |
| object | 55s | Object name | Object name as provided by the observer. | |
| obrecipe | 55s | Observing recipe required/used | Observing recipe required/used | |
| obsgeo_x | 15.4f | m | Cartesian X Coord of the telescope | The position of the telescope along the line defined by the intersection of the meridian and the equatorial planes. The Earth's center of mass is the origin. |
| obsgeo_y | 15.4f | m | Cartesian Y coord of the telescope | The position of the telescope along the line 90 degrees East of the X-axis and its intersection with the equator. The Earth's center of mass is the origin. |
| obsgeo_z | 15.4f | m | Cartesian Z coord of the telescope | The position of the telescope along the line from the Earth's center of mass (the origin) and the North Pole. |
| obsid | 55s | Observation ID | Name of the observation (fixed set of filter, pointing, exposure time and defocus) given by the observer/proposer. | |
| obsnote | 55s | User specified observation note | User specified observation note | |
| obstelem | 55s | Link to the observation telemetry file | Link to the observation telemetry file | |
| obstype | 16s | Type of observation | The type of observation taken which must be one of {EXPOSE,STANDARD, LAMBERT-DARK,LAMBERT-FLAT,BIAS,DARK,SKY-FLAT,LAMP-FLAT,ARC,SPECTRUM} | |
| ofst_dec | 12s | sDD:MM:SS.ss | Catalog Dec plus pointing offsets | Catalog Declination plus pointing offsets |
| ofst_ra | 12s | HH:MM:SS.ss | Catalog RA plus pointing offsets | Catalog Right Ascension plus pointing offsets |
| origin | 55s | Organization responsible for the data | Organization responsible for the data | |
| origname | 55s | File name written by ICS | The original file name written by the Instrument Control System (ICS). | |
| parallax | 10.6f | arcsec | Parallax of the object | Parallax of the object. These values should default to 0.0 in the POND and be passed down. |
| pcrecipe | 55s | Processing recipes required/used | Processing recipes required/used | |
| pipever | 55s | Pipeline version | The pipeline version string. This is likely to be a combination of a version number (allowing change tracking) and a SVN revision number allowing traceback to a specific version of the codebase. | |
| pixscale | 10.3f | arcsec/pixel | Nominal pixel scale on the sky | Nominal pixel scale on the sky |
| plephem | 55s | Source of planetary ephemerides | Source of planetary ephemerides | |
| pm_dec | 10.5f | arcsec/year | Proper motion in Dec of the object | Proper motion in Dec of the object. These values should default to 0.0 in the POND and be passed down. |
| pm_ra | 10.5f | sec/year | Proper motion in RA of the object | Proper motion in RA of the object. These values should default to 0.0 in the POND and be passed down. |
| polarmox | 10.4f | arcsec | Polar motion X | The polar motion X co-ordinate in arcsecs. This is usually from the TCS which obtains it from downloading the IERS Bulletin A (http://maia.usno.navy.mil/ser7/ser7.dat). |
| polarmoy | 10.4f | Polar motion Y | The polar motion Y co-ordinate in arcsecs. This is usually from the TCS which obtains it from downloading the IERS Bulletin A (http://maia.usno.navy.mil/ser7/ser7.dat). | |
| pprecipe | 55s | Post-processing recipes required/used | Post-processing recipes required/used | |
| propid | 25s | Proposal ID | The LCOGT proposal id conforming to the LCOGT Proposal code scheme of {TAG designator}{Semester}-{Proposal No.}. | |
| qv1_0 | 14.7f | Projection parameter | Distortion function for x: a_0=0 | |
| qv1_1 | 14.7f | Projection parameter | Distortion function for x: a_1 x = 1 | |
| qv1_17 | 14.7f | Projection parameter | Distortion function for x: a_17 x^5 = 3q^2 | |
| qv1_21 | 14.7f | Projection parameter | Distortion function for x: a_21 xy^4 = 3q^2 | |
| qv1_31 | 14.7f | Projection parameter | Distortion function for x: a_31 x^7 = -12q^3 | |
| qv1_37 | 14.7f | Projection parameter | Distortion function for x: a_37 xy^6 = -12q^3 | |
| qv1_7 | 14.7f | Projection parameter | Distortion function for x: a_7 x^3 = -q | |
| qv1_9 | 14.7f | Projection parameter | Distortion function for x: a_9 xy^2 = -q | |
| qv2_0 | 14.7f | Projection parameter | Distortion function for y: b_0=0 | |
| qv2_1 | 14.7f | Projection parameter | Distortion function for y: b_1 y = 1 | |
| qv2_17 | 14.7f | Projection parameter | Distortion function for y: b_17 y^5 = 3q^2 | |
| qv2_21 | 14.7f | Projection parameter | Distortion function for y: b_21 yx^4 = 3q^2 | |
| qv2_31 | 14.7f | Projection parameter | Distortion function for y: b_31 y^7 = -12q^3 | |
| qv2_37 | 14.7f | Projection parameter | Distortion function for y: b_37 yx^6 = -12q^3 | |
| qv2_7 | 14.7f | Projection parameter | Distortion function for y: b_7 y^3 = -q | |
| qv2_9 | 14.7f | Projection parameter | Distortion function for y: b_9 yx^2 = -q | |
| ra | 14.7f | Right Ascension at array center | Right Ascension at array center | |
| radesys | 8s | Fundamental coord. system of the object | The co-ordinate system of the object. Only ICRS co-ordinate systems may be used. FK5 positions will be treated as sufficiently close to ICRS to be interchangeable. | |
| radvel | 10.4f | km/s | Radial velocity of the object | Radial velocity of the object. These values should default to 0.0 in the POND and be passed down. |
| ratel | 12s | HH:MM:SS.sss | RA where telescope is pointing | Zero-padded sexagesimal mean RA of where telescope is pointing. |
| ratrack | 10.4f | arcsec/s | Non-sidereal tracking in RA | Non-sidereal tracking in RA. These values should default to 0.0 in the POND and be passed down. |
| rdnoise | 10.2f | e/pixel | Detector read noise | Detector read noise |
| rdspeed | 10.1f | kpix/sec | Detector readout speed | Detector readout speed |
| refhumid | 14.7f | % | Humidity used in refraction calculation | Humidity used in refraction calculation |
| refpres | 14.7f | mbar | Pressure in refraction calculation | Pressure in refraction calculation |
| reftemp | 14.7f | deg C | Temperature in refraction calculation | Temperature in refraction calculation |
| reqnum | 55s | Unique identifier to track a sub-Request | Unique identifier to track a sub-Request | |
| reqtime | 14.6f | sec | Requested exposure time | The requested exposure time. Prior to 2019-04-10, this keyword was used only for observations with the 0.4m SBIG cameras. |
| roi | 55s | binned pixel | Region of Interest or MULTIPLE | ROI is the actual region of the detector you are using, if there are multiple then FITS has multiple extensions and the primary header would read 'MULTIPLE" and each extension header would have an appropriate ROI. |
| rollerdr | 10.4f | rad | Driven roller encoder angle | The encoder angle from the driven rollers' encoder on the roll (H.A.) axis (measured in radians). |
| rollernd | 10.4f | rad | Non-driven roller encoder angle | The encoder angle from the non-driven rollers' encoder on the roll (H.A.) axis (measured in radians). |
| rotangle | 14.7f | deg | Rotator axis position | The actual position of the selected image rotator. Must be set to 'N/A' for telescopes without a selected image rotator. |
| rotdmd | 14.7f | deg | Rotator axis demand | The demanded position of the selected image rotator. Must be set to 'N/A' for telescopes without a selected image rotator. |
| rotmode | 55s | Rotator mode | The selected image rotator mode. Must be set to one of {SKY, MOUNT, VFLOAT, VERTICAL, FLOAT, N/A}. The modes are:
|
|
| rotskypa | 14.7f | deg | Rotator position angle | The position angle of the selected image rotator. Must be set to 'N/A' for telescopes without a selected image rotator. |
| rotstat | 55s | Rotator axis state | One of a SystemState enum: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF} | |
| rottype | 55s | Selected image derotator | The selected image derotator. Must be set to one of {CASSEGRAIN, NASMYTH_LEFT, NASMYTH_RIGHT, COUDE_LEFT, COUDE_RIGHT, GREGORIAN, PRIME, NONE, OTHER}. Must be set to 'NONE' for telescopes without an image derotator or where one is not currently selected. | |
| saturate | 10.1f | ADU | Detector saturation level | Detector saturation level |
| schednam | 55s | Name of scheduler in control | The name of the scheduling entity that is in control. This will normally be the Network (Adaptive) Scheduler. In the case that the Network (Adaptive) Scheduler is not running, then this should be 'POND'. If an Observing Script is in control, then SCHEDNAM should contain the name of the Observing Script. | |
| schedsee | 10.4f | arcsec | Estimated seeing when group scheduled | The Site Agent's estimate of the seeing that was used by the scheduler for the basis of selecting the current group. |
| schedtrn | 10.4f | Estimated transparency when group sched | Estimated transparency when group sched | |
| secpix | 14.7f | arcsec/pixel | Fitted pixel scale on sky | Fitted pixel scale on sky |
| sexaped1 | 10.2f | pixel | Aperture Diameter 1 | Aperture Diameter 1 |
| sexaped2 | 10.2f | pixel | Aperture Diameter 2 | Aperture Diameter 2 |
| sexaped3 | 10.2f | pixel | Aperture Diameter 3 | Aperture Diameter 3 |
| sexaped4 | 10.2f | pixel | Aperture Diameter 4 | Aperture Diameter 4 |
| sexapek1 | 14.7f | Kron parameter | Kron parameter | |
| sexapek2 | 14.7f | Kron analysis radius | Kron analysis radius | |
| sexapek3 | 14.7f | Kron minimum radius | Kron minimum radius | |
| sexbkdev | 17.9e | ADU | RMS in median background | RMS in median background |
| sexbkgfx | 10d | Background filter width | Background filter width | |
| sexbkgfy | 10d | Background filter height | Background filter height | |
| sexbkgnd | 17.9e | ADU | Median background | Median background |
| sexbkgsx | 10d | pixel | Background mesh width | Background mesh width |
| sexbkgsy | 10d | pixel | Background mesh height | Background mesh height |
| sexbkthd | 17.9e | ADU | Extraction threshold | Extraction threshold |
| sexcln | 8s | Cleaning flag | Cleaning flag | |
| sexclnpa | 14.7f | Cleaning parameter | Cleaning parameter | |
| sexclnst | 10d | Cleaning object stack | Cleaning object stack | |
| sexconff | 10s | Configuration filename | Configuration filename | |
| sexconv | 8s | Convolution flag | Convolution flag | |
| sexconvf | 55s | Convolution filename | Convolution filename | |
| sexconvn | 8s | Convolution normalization flag | Convolution normalization flag | |
| sexdbldc | 14.7f | Contrast parameter | Contrast parameter | |
| sexdbldn | 10d | Number of sub-thresholds | Number of sub-thresholds | |
| sexdett | 8s | Detection type | Detection type | |
| sexfbufs | 10d | lines | Frame buffer size | Frame buffer size |
| sexgain | 17.9e | e/ADU | Gain | Gain |
| seximabp | 14.7f | bits/pixel | FITS image BITPIX | FITS image BITPIX |
| seximasx | 10d | pixel | Image width | Image width |
| seximasy | 10d | pixel | Image height | Image height |
| sexisapr | 14.7f | ISO-APER ratio | ISO-APER ratio | |
| sexmggam | 14.7f | Magnitude gamma | Magnitude gamma | |
| sexmgzpt | 14.7f | mag | Magnitude zero point | Magnitude zero point |
| sexminar | 10d | pixel | Extraction minimum area | Extraction minimum area |
| sexndet | 10d | Number of detections | Number of detections | |
| sexnfin | 10d | Number of final extracted objects | Number of final extracted objects | |
| sexnnwf | 55s | Classification NNW filename | Classification NNW filename | |
| sexnpara | 10d | Number of parameters per object | Number of parameters per object | |
| sexpbkgs | 10d | pixel | Local area thickness | Local area thickness |
| sexpbkgt | 8s | Photometry background type | Photometry background type [LOCAL, GLOBAL] | |
| sexpixs | 17.9e | arcsec/pixel | Pixel scale | Pixel scale |
| sexpixsk | 10d | pixel | Pixel stacksize | Pixel stacksize |
| sexsatlv | 17.9e | ADU | Saturation level | Saturation level |
| sexsfwhm | 17.9e | arcsec | Seeing FWHM | Seeing FWHM |
| sexstrsy | 10d | lines | Strip height | Strip height |
| sexthld | 17.9e | Threshold | Threshold | |
| sexthldt | 55s | Threshold type | Threshold type | |
| site | 70s | Name of the observatory site | Name of the observatory site | |
| siteid | 10s | ID code of the observatory site | ID code of the observatory site specified by the three letter code from the nearest airport. One of {ogg,coj,bpl,lsc,sqa,cpt,elp,tfn}. | |
| skymag | 14.7f | mag/arcsec^2 | Computed (expected) sky brightness | Computed (expected) sky brightness |
| srctype | 55s | Source Type | Source Type One of {EXTRASOLAR, MAJORPLANET, MINORPLANET, COMET, MOON} | |
| sunalt | 14.7f | deg | Solar altitude | Solar altitude |
| sundist | 14.7f | deg | Solar Distance from Target | Solar Distance from Target |
| tagid | 11s | Telescope Allocation Group ID | The Time Allocation Group that the proposal belongs. Current permitted values are LCO/FTN_RCS/FTS_RCS/CALIB/UKRTOC/FTUKRES/ HAWRTOC/HAWOL/LCOARI/FTS_ANU/MACUED. | |
| tcorcomp | 55s | Time corrections performed | Time corrections performed | |
| tcorepos | 55s | Source of Earth positions | Source of Earth positions | |
| tcorsyst | 55s | Reference frame time system for TCORR | Reference frame time system for TCORR | |
| tcorvern | 55s | Time correction code version | Time correction code version | |
| tcsstate | 8s | Telescope Control System (TCS) state | Telescope Control System (TCS) state. One of a SystemState enum: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF} | |
| tcsver | 55s | Version of the TCS software | Version of the Telescope Control System software | |
| telescop | 55s | Name of the telescope | Name of the telescope | |
| telid | 55s | ID code of the telescope | ID code of the telescope | |
| telmode | 13s | Telescope mode | The mode that the telescope is operating in. For normal operations with observations flowing from the POND & Scheduler, this will be 'AUTOMATIC'. If the Sequencer has been disabled locally so that POND observations are ignored, then this will be 'MANUAL'. If an Observing Script is in control, then this will be 'OBSSCRIPT'. | |
| telstate | 8s | Telescope status | The overall telescope state. One of a SystemState enum: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF}. | |
| timesys | 55s | Time system used for all dates | The time system/scale used. It sets the principal time system for time-related keywords and data in the HDU (i.e., it does not preclude the addition of keywords or data columns that provide information for transformations to other time scales, such as sidereal times or barycenter corrections). Each HDU shall contain not more than one TIMESYS keyword. By default, times will be deemed to be as measured at the detector (or at the observatory) for time scales defined on the geoid (i.e., TAI, UTC and TT). | |
| tpntmodl | 55s | Version of the pointing model | Version number/release date of the pointing model, usually from TPOINT. | |
| tpt_dec | 12s | sDD:MM:SS.ss | Telescope demand Dec | Telescope demand Dec |
| tpt_ra | 12s | HH:MM:SS.ss | Telescope demand RA | Telescope demand RA |
| tracknum | 55s | Unique identifier to track a UserRequest | Unique identifier to track a UserRequest | |
| trimsec | 55s | binned pixel | Section of CCD containing useful data | Section of the recorded image to be kept after calibration processing. This is generally the part of the data section containing useful data. The section is in in binned pixels if binning is done. |
| tubetemp | 14.7f | deg C | Temperature of the telescope tube | Temperature of the telescope tube |
| userid | 55s | User login ID | The LCOGT userid of the proposal Principal Investigator (PI) for (normal) robotic operations or the userid of the observer for planetarium and manual observing. | |
| ut1_utc | 10.4f | sec | UT1-UTC | The (UT1-UTC) value in seconds, usually from the TCS which obtains it from downloading the IERS Bulletin A (http://maia.usno.navy.mil/ser7/ser7.dat). |
| utstart | 16s | UTC | The start time of the observation | The UTC time of the instant of shutter opening of the observation. This is expected to be produced by the instrument from a tight synch to a GPS clock, probably via a Pulse-Per-Second (PPS) output. |
| utstop | 16s | UTC | The stop time of the observation | The UTC time of the instant of shutter closure of the observation. This is expected to be produced by the instrument from a tight synch to a GPS clock, probably via a Pulse-Per-Second (PPS) output. |
| wavelen | 14.7f | Wavelength assumed by timecorrect.py | Wavelength assumed by timecorrect.py | |
| wccattyp | 55s | Reference catalog used | Reference catalog used | |
| wcnterms | 10d | Number of terms used in WCS fit | Number of terms used in WCS fit | |
| wcsdelde | 22.13f | arcsec | Shift of fitted WCS with respect to nominal Dec | Shift of fitted WCS with respect to nominal Dec |
| wcsdelra | 22.13f | arcsec | Shift of fitted WCS with respect to nominal RA | Shift of fitted WCS with respect to nominal RA |
| wcserr | 10d | Error status of WCS fit. 0 for no error | Error status of WCS fit. 0 for no error | |
| wcsimcat | 55s | Detection catalog file name | File name of the catalog with the sources detected on the image. | |
| wcsmatch | 10d | Number of stars in image matched against reference catalog | Number of stars in image matched against reference catalog | |
| wcsnref | 10d | Number stars in image available to define WCS | Number stars in image available to define WCS | |
| wcsrdres | 55s | arcsec | WCS fitting residuals (x/y) | WCS fitting residuals (x/y) |
| wcsrfcat | 55s | Astrometric catalog file name | File name for the astrometric catalog used in the WCS solution | |
| wcssolvr | 55s | Solver for the World Coordinate System | Solver for the World Coordinate System | |
| winddir | 14.7f | deg E of N | Wind direction | Wind direction |
| windspee | 14.7f | km/h | Wind speed | Wind speed |
| wmscloud | 14.7f | deg C | Boltwood sky temperature | Boltwood sky temperature |
| wmsdewpt | 14.7f | deg C | Dewpoint | Dewpoint |
| wmshumid | 14.7f | % | Humidity | Current percentage humidity |
| wmsmoist | 14.7f | mV | Moisture level | Moisture level |
| wmspres | 14.7f | mbar | Atmospheric pressure | Atmospheric pressure |
| wmsrain | 8s | Rain alert | Rain alert. One of {CLEAR, SET} | |
| wmsskybr | 14.7f | mag/arcsec^2 | Measured SEMS sky brightness | The measured sky brightness in mags/arcsec^2 from the Sky Quality Meter. |
| wmsstate | 12s | WMS system state | WMS system state. One of a SystemState enum: {INVALID, OKAY, INIT, STANDBY, WARNING, FAILED, TIMEOUT, SUSPEND, OFF} | |
| wmstemp | 14.7f | deg C | External temperature | External temperature |