The WISE single-exposure images are in FITS format.
An extensive image header is added to the raw fits image data during the ingest process (IV.2). The header consists of two main sections: keywords extracted directly from the engineering housekeeping (H/K) data, and non-H/K keywords. H/K data are sampled at various rates and not synched with the acquisition of the image data. The H/K data file is downlinked and transfered to WSDC where all measurements are stored in a database. During the ingest process, this database is searched for the value of a particular keyword closest in time to the DATE-OBS mid-exposure image data acquisition time. Hence there is a time difference between DATE-OBS and the time the keyword was sampled. The header keywords HK_MINDT and HK_MAXDT (see table below) indicate the minimum and maximum time difference for all H/K derived header values.
Times in the non-H/K section of the header are all computed from various ancillary files. The times saved in the image source packet headers are from the spacecraft (S/C) clock at the time the first data reach the MUB, which is within a few msecs of the end of the exposure. It will take another 1.1 sec for the last pixels to reach the MUB. During ingest, a constant offset of -4.853 sec (indicated by the header keyword FRMTOFF) is added to this time and saved as the frame time. This time stamp corresponds to the midpoint of the track followed by the boresite during the exposure.
An example of a single-exposure image header can be found in Table 2.
| Field Name | Example Value | Units | Description |
|---|---|---|---|
| Header Keywords Not Derived from H/K Data | |||
| BITPIX | -32 | --- | -32 => 32 bit IEEE floating point data (number of bits per data pixel) |
| NAXIS | 2 | --- | Number of data axes, always = 2 for two dimensional image |
| NAXIS1 | 1016 | --- | Number of columns in image, 1016 for w1 - w3 (1024 - 8 reference pixels, 4 on either side of the array), 508 for w4 |
| NAXIS2 | 1016 | --- | Number of lines in image, 1016 for w1 - w3 (1024 - 8 reference pixels, 4 each on top and bottom of the array), 508 for w4 |
| TELESCOP | 'WISE' | --- | observatory name |
| BUNIT | 'DN' | --- | Units of image data [1] |
| EQUINOX | 2000 | --- | Equinox for celestial coordinate system |
| RADECSYS | 'FK5' | --- | astrometric reference system |
| FILETYPE | 'intensity image frame' | --- | image type; options are 'intensity image frame', 'uncertainty image frame', 'mask image frame' [2] |
| DATE_OBS | '2010-06-29T03:17:58.801' | --- | UTC of Observation midpoint (YYYY-MM-DDTHH:MM:SS.SSS) |
| WAVELEN | 3.4 | micron | Passband center wavelength |
| BAND | 1 | --- | Band number (1,2,3,or 4) |
| SCAN | '05943a' | --- | Scan ID |
| FRNUM | 166 | --- | Frame number in scan |
| FRSETID | '05943a166' | --- | Frame set ID |
| SCANSTRT | '2010-180T02:50:15.689' | --- | Scan UTC start time (YYYY-DDDTHH:MM:SS.SSS) |
| SCANEND | '2010-180T03:26:07.924' | --- | Scan UTC end time (YYYY-DDDTHH:MM:SS.SSS) |
| SCANGRP | '3a' | --- | Scan ID group |
| FRMTOFF | -4.853 | sec | Offset applied to packet VTC |
| VTC | 331053354.568888 | --- | Observation midpoint vehicle time code |
| UNIXT | 1277781478.80099 | sec | Observation midpoint UNIX time |
| EPHEMT | 331053544.985642 | sec | Observation midpoint TDT secs from J2000 |
| UTC | '2010-180T03:17:58.801' | --- | Observation midpoint UTC date/time (YYYY-DDDTHH:MM:SS.SSS) |
| DATIME | '2010-06-29T03:17:58.801' | --- | Observation midpoint calendar date/time (YYYY-MM-DDTHH:MM:SS.SSS) |
| MJD_OBS | 55376.13748612 | days | Observation midpoint Modified Julian Day |
| JD_OBS | 2455376.63748612 | days | Observation midpoint Julian Day |
| HJD_OBS | 2455376.63770536 | days | Observation midpoint Heliocentric Julian Day |
| DTANNEAL | 3089.12847042084 | sec | Time since last anneal |
| UTANNEAL | '2010-180T02:26:29.673' | --- | UTC of last anneal (YYYY-DDDTHH:MM:SS.SSS) |
| RAWFILE | 'none' | --- | Raw input file name; usually 'none' |
| TLMFILE | '/wise/fops/ingest/delivs/10180/10180T040553/ WIS_HRP_PKT_FE1A_2010_1&80_04_05_53_CAT.bin' | --- | Source packet telemetry file name |
| TLMSEQNO | 2531 | --- | Delivery image sequence number |
| DELIVID | '10180T040553' | --- | Delivery ID |
| CMPRSRAT | 0.351 | --- | Compression ratio |
| INEVENTS | 'ASCE SCAN' | --- | Active orbit events [3] |
| EV*** | 2424.80147141218 | sec | Time since orbit event start [3] |
| L0FILE | '/wise/fops/l0/3a/05943a/fr/166/05943a166-w1-int-0.fits.gz' | --- | Level-0 file name |
| CRPIX1 | 508.5 | --- | Center Reference pixel along Axis 1 |
| CRPIX2 | 508.5 | --- | Center Reference pixel along Axis 2 |
| CRVAL1 | 225.06994510454 | deg | Image center RA |
| CRVAL2 | 51.4616534896619 | deg | Image center Dec |
| CTYPE1 | 'RA---SIN-SIP' | --- | Projection type (with distortion) for axis 1 |
| CTYPE2 | 'DEC--SIN-SIP' | --- | Projection type (with distortion) for axis 2 |
| CD1_1 | 0.000599691208933248 | --- | WCS rotation matrix element |
| CD1_2 | -0.000474126014661878 | --- | WCS rotation matrix element |
| CD2_1 | -0.000477243794866344 | --- | WCS rotation matrix element |
| CD2_2 | -0.000595773493501184 | --- | WCS rotation matrix element |
| WCROTA2 | 141.486668244472 | deg | CCW rotation of RA at CRPIX1,2 |
| PA | 218.513331755528 | deg | Rotation of +Y EofN at CRPIX1,2 |
| WCDELT1 | -0.0007664145 | deg/pix | X-axis pixel scale |
| WCDELT2 | 0.0007614076 | deg/pix | Y-axis pixel scale |
| PXSCAL1 | -2.7590922 | arcsec/pix | X-axis pixel scale |
| PXSCAL2 | 2.74106736 | arcsec/pix | Y-axis pixel scale |
| CRDER1 | 1.70323323453294E-06 | deg | Apriori RA error |
| CRDER2 | 1.67328588127058E-06 | deg | Apriori Dec error |
| UNCRTPA | 0.000345836839111701 | deg | Apriori PA error |
| CSDRADEC | -9.48754584403298E-09 | --- | Apriori RA/Dec cross-correlation |
| UNCRTS1 | 2.3E-07 | deg/pix | Apriori X-axis scale error |
| UNCRTS2 | 2.3E-07 | deg/pix | Apriori Y-axis scale error |
| RA0 | 225.023518934015 | deg | Level-0 ADCS frame center RA |
| DEC0 | 51.487461072027 | deg | Level-0 ADCS frame center Dec |
| PA0 | 218.496397299452 | deg | Level-0 ADCS frame rot. of +Y EofN |
| PA0_SC | 51.5036027005476 | deg | Level-0 ADCS raw rot. of S/C +Y EofN |
| ELON0 | 191.917431021341 | deg | Level-0 ADCS frame center ecliptic lon |
| ELAT0 | 63.2678660897687 | deg | Level-0 ADCS frame center ecliptic lat |
| GLON0 | 86.9189600950138 | deg | Level-0 ADCS frame center galactic lon |
| GLAT0 | 55.682531179842 | deg | Level-0 ADCS frame center galactic lat |
| L0XFORM | '-1,0,0,1' | --- | Raw->L0 frame transformation |
| L0B2BDX | -9999[4] | pixels | Raw->L0 band x offset |
| L0B2BDY | -9999[4] | pixels | Raw->L0 band y offset |
| L0B2BDPA | -9999[4] | deg | Raw->L0 band rotation offset |
| SCRATEX | 0.00751621019319527 | arcmin/sec | Rot. rate about S/C CF X |
| SCRATEY | 3.7681314772562 | arcmin/sec | Rot. rate about S/C CF Y |
| SCRATEZ | -0.0420933044782987 | arcmin/sec | Rot. rate about S/C CF Z |
| DISTSRC | 'B00312- ' | --- | internal code, disregard |
| B2BSRC | 'NONE ' | --- | internal code, disregard |
| EXPTIME | 7.7 | sec | Frame exposure time |
| TSAMP | 1.1 | sec | Sample time |
| FRINT | 11 | sec | Frame-to-frame interval |
| DEBOFF | 1024 | --- | DEB offset |
| DEBTRUNC | 3 | --- | Bits truncated by DEB |
| DEBGAIN | 3.75 | e-/DEB ADU | DEB gain |
| FEBGAIN | 5.74 | e-/SUR ADU | FEB gain |
| SUN2SCX | 0.126651215420971 | AU | Sun-to-S/C vector X component, J2000 |
| SUN2SCY | -0.925426475714631 | AU | Sun-to-S/C vector Y component, J2000 |
| SUN2SCZ | -0.401159133272042 | AU | Sun-to-S/C vector Z component, J2000 |
| SCVELX | 0.0205831831858303 | AU/day | SUN-to-S/C velocity vector X component |
| SCVELY | 0.00246213836806783 | AU/day | SUN-to-S/C velocity vector Y component |
| SCVELZ | 0.00295204616463046 | AU/day | SUN-to-S/C velocity vector Z component |
| ERTH2SCX | -2.29174694575148E-05 | AU | Earth-to-S/C vector X component |
| ERTH2SCY | 3.597251106522E-06 | AU | Earth-to-S/C vector Y component |
| ERTH2SCZ | 3.98692265687137E-05 | AU | Earth-to-S/C vector Z component |
| SUNSEP | 92.1422509176731 | deg | L0 FOV center to Sun angular separation |
| SUNPA | 312.937278760484 | deg | Direction of Sun, east of north |
| MOONSEP | 99.72247578063 | deg | L0 FOV center to Moon angular separation |
| MOONPA | 105.150106604223 | deg | Direction of Moon, east of north |
| MARSSEP | 66.2157771148338 | deg | L0 FOV center to Mars angular separation |
| MARSPA | 252.001453760767 | deg | Direction of Mars, east of north |
| JUPSEP | 117.597952271002 | deg | L0 FOV center to Jupiter angular separation |
| JUPPA | 49.5449502989206 | deg | Direction of Jupiter, east of north |
| SATSEP | 61.7550240770178 | deg | L0 FOV center to Saturn angular separation |
| SATPA | 234.051565452609 | deg | Direction of Saturn, east of north |
| GEOLON | 204.592419 | deg | S/C geographic longitude |
| GEOLAT | 59.810269 | deg | S/C geographic latitude |
| GEOALT | 538.361093 | km | S/C altitude |
| GCD2SAA | 101.027318 | deg | Great circle angle to SAA boundary |
| GEO_DT | 1.19867521524429 | sec | Time since ground track sample |
| Header Keywords Derived from H/K Data IMPORTANT NOTE [5] | |||
| SURCOEF1 | 0 | --- | Nominal static survey SUR coefficient #1 |
| SURCOEF2 | -7 | --- | Nominal static survey SUR coefficient #2 |
| SURCOEF3 | -5 | --- | Nominal static survey SUR coefficient #3 |
| SURCOEF4 | -3 | --- | Nominal static survey SUR coefficient #4 |
| SURCOEF5 | -1 | --- | Nominal static survey SUR coefficient #5 |
| SURCOEF6 | 1 | --- | Nominal static survey SUR coefficient #6 |
| SURCOEF7 | 3 | --- | Nominal static survey SUR coefficient #7 |
| SURCOEF8 | 5 | --- | Nominal static survey SUR coefficient #8 |
| SURCOEF9 | 7 | --- | Nominal static survey SUR coefficient #9 |
| ATTEMGEN | 'false ' | --- | electromagnet control enable |
| ATT_ADST | 'point ' | --- | current adcs state |
| ATT_ERRX | 2.79873E-08 | --- | attitude error x |
| ATT_ERRY | 3.36525E-06 | --- | attitude error y |
| ATT_ERRZ | -7.25566E-06 | --- | attitude error z |
| ATTUPDMT | 'three_ax_rt_att' | --- | attitude update method |
| ATT_FAQ1 | 0.219713 | --- | inertial to control attitude x |
| ATT_FAQ2 | -0.247251 | --- | inertial to control attitude y |
| ATT_FAQ3 | 0.0534532 | --- | inertial to control attitude z |
| ATT_FAQ4 | 0.942197 | --- | inertial to control attitude w |
| ATT_FRTX | 1.93254E-06 | rad/sec | inertial to control rate x |
| ATT_FRTY | 0.00109616 | rad/sec | inertial to control rate y |
| ATT_FRTZ | -1.23647E-05 | rad/sec | inertial to control rate z |
| ATT_METH | 'three_ax_rt_att' | --- | attitude determination method |
| ATTCRCFG | 5 | --- | current config set |
| ATTACCFG | 'w1234_sci' | --- | actuator config index |
| GYRODTST | 'good' | --- | Overall status of the gyro data |
| ICV_VLD | 'valid' | --- | icv valid |
| IMU_PWR | 'on' | --- | imu power on |
| MAG_PWR | 'on' | --- | mag power on |
| MAGFDVST | 'good' | --- | mag field vector status |
| MNVRDONE | 'true' | --- | maneuver done |
| MSUN_VST | 'good' | --- | measured sun vector status |
| MSUN_VX | 0.0672943 | --- | measured sun x |
| MSUN_VY | 0.992695 | --- | measured sun y |
| MSUN_VZ | -0.100137 | --- | measured sun z |
| ORBSTVLD | 'valid' | --- | orbital state valid |
| RATERRX | 1.70747E-06 | rad/sec | rate error x |
| RATERRY | 8.55446E-06 | rad/sec | rate error y |
| RATERRZ | 1.23647E-05 | rad/sec | rate error z |
| WHL1_SPD | -141.949 | rad/sec | wheel 1 speed |
| WHL2_SPD | -132.641 | rad/sec | wheel 2 speed |
| WHL3_SPD | -101.226 | rad/sec | wheel 3 speed |
| WHL4_SPD | -147.767 | rad/sec | wheel 4 speed |
| SEL_SENS | 'st1_st2_rs' | --- | selected sensor |
| INSHADOW | 'false' | --- | in shadow |
| NMSUNUSD | 6 | --- | number of sun sensors used |
| ST1_ASCT | 5 | --- | star tracker 1 att star count |
| ST2_ASCT | 4 | --- | star tracker 2 att star count |
| ST1_BGHI | 'ok' | --- | star tracker 1 background high |
| ST2_BGHI | 'ok' | --- | star tracker 2 background high |
| ST1STRID | 0 | --- | star tracker 1 star id mode |
| ST2STRID | 0 | --- | star tracker 2 star id mode |
| ST_ATTDQ | 'good' | --- | star tracker attitude data quality |
| ST_RTEDQ | 'good' | --- | star tracker rate data quality |
| ST_USED | 'both' | --- | star tracker used |
| STVLDLCT | 'true' | --- | st valid last cycle |
| TQROD1ST | 'off' | --- | torqrod1 current powered status |
| TQROD2ST | 'off' | --- | torqrod2 current powered status |
| TQROD3ST | 'off' | --- | torqrod3 current powered status |
| MDSCMODE | 'operate ' | --- | Current spacecraft state |
| APSHIMYT | 100.029 | K | Aperture Shade Inner Cone (-Y) Temperature |
| APSHIPYT | 100.226 | K | Aperture Shade Inner Cone (+Y) Temperature |
| APSHOMYT | 192.4 | K | Aperture Shade Outer Cone (-Y) Temperature |
| APSHOPYT | 184.4 | K | Aperture Shade Outer Cone (+Y) Temperature |
| B13NUMSA | 9 | --- | Bands 1&3 Number of Samples |
| B1EOFERR | 'no' | --- | Band 1 End of Frame Error |
| B1SCIFSE | 93 | --- | Band 1 Science Frames Sent |
| B1MLPERR | 'no' | --- | Band 1 Missing Last Pixel Error |
| B1SATDET | 'enabled' | --- | Band 1 Saturation Detection Enable |
| B1COEFF1 | 0 | --- | Band 1 SUR Coefficient 1 |
| B1COEFF2 | -7 | --- | Band 1 SUR Coefficient 2 |
| B1COEFF3 | -5 | --- | Band 1 SUR Coefficient 3 |
| B1COEFF4 | -3 | --- | Band 1 SUR Coefficient 4 |
| B1COEFF5 | -1 | --- | Band 1 SUR Coefficient 5 |
| B1COEFF6 | 1 | --- | Band 1 SUR Coefficient 6 |
| B1COEFF7 | 3 | --- | Band 1 SUR Coefficient 7 |
| B1COEFF8 | 5 | --- | Band 1 SUR Coefficient 8 |
| B1COEFF9 | 7 | --- | Band 1 SUR Coefficient 9 |
| B1SUROFF | 1024 | --- | Band 1 SUR Offset |
| B1SSYERR | 'no' | --- | Band 1 Sample Sync Error |
| B1PSATTH | 16000 | --- | Band 1 Pixel Saturation Threshold |
| B1FPTERR | 'no' | --- | Band 1 Focal Plane Timeout Error |
| B1TRBITS | 3 | --- | Band 1 Truncated Bits |
| B24NUMSA | 9 | --- | Bands 2&4 Number of Samples |
| B2EOFERR | 'no' | --- | Band 2 End of Frame Error |
| B2SCIFSE | 93 | --- | Band 2 Science Frames Sent |
| B2MLPERR | 'no' | --- | Band 2 Missing Last Pixel Error |
| B2SATDET | 'enabled ' | --- | Band 2 Saturation Detection Enable |
| B2COEFF1 | 0 | --- | Band 2 SUR Coefficient 1 |
| B2COEFF2 | -7 | --- | Band 2 SUR Coefficient 2 |
| B2COEFF3 | -5 | --- | Band 2 SUR Coefficient 3 |
| B2COEFF4 | -3 | --- | Band 2 SUR Coefficient 4 |
| B2COEFF5 | -1 | --- | Band 2 SUR Coefficient 5 |
| B2COEFF6 | 1 | --- | Band 2 SUR Coefficient 6 |
| B2COEFF7 | 3 | --- | Band 2 SUR Coefficient 7 |
| B2COEFF8 | 5 | --- | Band 2 SUR Coefficient 8 |
| B2COEFF9 | 7 | --- | Band 2 SUR Coefficient 9 |
| B2SUROFF | 1024 | --- | Band 2 SUR Offset |
| B2SSYERR | 'no' | --- | Band 2 Sample Sync Error |
| B2PSATTH | 14500 | --- | Band 2 Pixel Saturation Threshold |
| B2FPTERR | 'no' | --- | Band 2 Focal Plane Timeout Error |
| B2TRBITS | 3 | --- | Band 2 Truncated Bits |
| B3EOFERR | 'no' | --- | Band 3 End of Frame Error |
| B3SCIFSE | 93 | --- | Band 3 Science Frames Sent |
| B3MLPERR | 'no' | --- | Band 3 Missing Last Pixel Error |
| B3SATDET | 'enabled' | --- | Band 3 Saturation Detection Enable |
| B3COEFF1 | -4 | --- | Band 3 SUR Coefficient 1 |
| B3COEFF2 | -3 | --- | Band 3 SUR Coefficient 2 |
| B3COEFF3 | -2 | --- | Band 3 SUR Coefficient 3 |
| B3COEFF4 | -1 | --- | Band 3 SUR Coefficient 4 |
| B3COEFF5 | 0 | --- | Band 3 SUR Coefficient 5 |
| B3COEFF6 | 1 | --- | Band 3 SUR Coefficient 6 |
| B3COEFF7 | 2 | --- | Band 3 SUR Coefficient 7 |
| B3COEFF8 | 3 | --- | Band 3 SUR Coefficient 8 |
| B3COEFF9 | 4 | --- | Band 3 SUR Coefficient 9 |
| B3SUROFF | 1024 | --- | Band 3 SUR Offset |
| B3SSYERR | 'no' | --- | Band 3 Sample Sync Error |
| B3PSATTH | 16000 | --- | Band 3 Pixel Saturation Threshold |
| B3FPTERR | 'no' | --- | Band 3 Focal Plane Timeout Error |
| B3TRBITS | 2 | --- | Band 3 Truncated Bits |
| B4EOFERR | 'no' | --- | Band 4 End of Frame Error |
| B4SCIFSE | 93 | --- | Band 4 Science Frames Sent |
| B4MLPERR | 'no' | --- | Band 4 Missing Last Pixel Error |
| B4SATDET | 'enabled' | --- | Band 4 Saturation Detection Enable |
| B4COEFF1 | -4 | --- | Band 4 SUR Coefficient 1 |
| B4COEFF2 | -3 | --- | Band 4 SUR Coefficient 2 |
| B4COEFF3 | -2 | --- | Band 4 SUR Coefficient 3 |
| B4COEFF4 | -1 | --- | Band 4 SUR Coefficient 4 |
| B4COEFF5 | 0 | --- | Band 4 SUR Coefficient 5 |
| B4COEFF6 | 1 | --- | Band 4 SUR Coefficient 6 |
| B4COEFF7 | 2 | --- | Band 4 SUR Coefficient 7 |
| B4COEFF8 | 3 | --- | Band 4 SUR Coefficient 8 |
| B4COEFF9 | 4 | --- | Band 4 SUR Coefficient 9 |
| B4SUROFF | 1024 | --- | Band 4 SUR Offset |
| B4SSYERR | 'no' | --- | Band 4 Sample Sync Error |
| B4PSATTH | 16000 | --- | Band 4 Pixel Saturation Threshold |
| B4FPTERR | 'no' | --- | Band 4 Focal Plane Timeout Error |
| B4TRBITS | 2 | --- | Band 4 Truncated Bits |
| B3FPATEM | 7.35145 | K | Back of Band 3 FPA Temperature |
| B4FPATEM | 7.3758 | K | Back of Band 4 FPA Temperature |
| CHANAPSA | -4.7791 | arcmin | Channel A Position [A] [6] |
| CHANAPSB | -2.95476 | arcmin | Channel A Position [B] [6] |
| CHANBPSA | 0 | arcmin | Channel B Position [A] [6] |
| CHANBPSB | -0.0012875 | arcmin | Channel B Position [B] [6] |
| CURAMSAM | 4097 | --- | Current Ramp Samples |
| LFOLERRA | 'no' | --- | Large Following Error [A] [6] |
| LFOLERRB | 'no' | --- | Large Following Error [B] [6] |
| B1FEBFT1 | 32.181 | K | FEB Band 1 FPA Temperature 1 |
| B1FEBFT2 | 32.0457 | K | FEB Band 1 FPA Temperature 2 |
| B1FEBOVO | 1.80394 | V | FEB Band 1 Offset Voltage |
| B2FEBFT1 | 31.9447 | K | FEB Band 2 FPA Temperature 1 |
| B2FEBFT2 | 31.6436 | K | FEB Band 2 FPA Temperature 2 |
| B2FEBOVO | 1.84315 | V | FEB Band 2 Offset Voltage |
| B3FEBFT1 | 7.13138 | K | FEB Band 3 FPA Temperature 1 |
| B3FEBFT2 | 7.20698 | K | FEB Band 3 FPA Temperature 2 |
| B3FEBOVO | 1.74511 | V | FEB Band 3 Offset Voltage |
| B4FEBFT1 | 7.13379 | K | FEB Band 4 FPA Temperature 1 |
| B4FEBFT2 | 7.19731 | K | FEB Band 4 FPA Temperature 2 |
| B4FEBOVO | 1.68629 | V | FEB Band 4 Offset Voltage |
| ANNHEA_A | 'disabled' | --- | Annealing Heater A Enabled |
| ANNHEAPA | 'off' | --- | Annealing Heater A Power Indicator |
| ANNHEA_B | 'disabled' | --- | Annealing Heater B Enabled |
| ANNHEAPB | 'off' | --- | Annealing Heater B Power Indicator |
| ANNHEA_T | 0 | sec | Annealing Heater Timer |
| IVCSADOT | 62.934 | K | IVCS Aft Dome Temperature |
| IVCSLHET | 60.7208 | K | IVCS LHe Cooling Loop Temperature |
| OVCSAFDT | 111.711 | K | OVCS Aft Dome Temperature |
| OVCSRART | 111.131 | K | OVCS Radiator Ring Temperature |
| PRITBOTT | 7.40113 | K | Primary Tank Bottom Temperature |
| PRITTOPT | 7.79561 | K | Primary Tank Top Temperature |
| SCPOSMON | 'b' | --- | Scanner selected for position monitoring |
| SCANVELA | 3.65 | arcmin/sec | Scan Velocity [A] [6] |
| SCANVELB | 3.81 | arcmin/sec | Scan Velocity [B] [6] |
| SECTBOTT | 11.851 | K | Secondary Tank Bottom Temperature |
| SECTTOPT | 11.5333 | K | Secondary Tank Top Temperature |
| PSEQEN_A | 'disabled' | --- | Position Sequencer Enabled [A] [6] |
| PSEQEN_B | 'enabled ' | --- | Position Sequencer Enabled [B] [6] |
| SERVEN_A | 'disabled' | --- | Servo Enabled [A] [6] |
| SERVEN_B | 'enabled ' | --- | Servo Enabled [B] [6] |
| BAFFRONT | 11.0915 | K | Baffle Front Temperature |
| BSPLMOUT | 11.231 | K | Beamsplitter Mount Temperature |
| TELINTFT | 11.0454 | K | Telescope Interface Flange Temperature |
| SCAMIRRT | 11.0148 | K | Scan Mirror Temperature |
| SECMIRRT | 11.1069 | K | Secondary Mirror Temperature |
| T12FPOIT | 109.778 | K | Tube 1/2 Fold Point Temperature |
| T23FPOIT | 62.934 | K | Tube 2/3 Fold Point Temperature |
| SHNDSPTE | 186.4 | K | Shell near Door Sep. Plane Temperature |
| SHNPVETE | 190.4 | K | Shell near Primary Vent Temperature |
| SHARDOTE | 192.1 | K | Shell at Rear Dome Temperature |
| TLCURMOD | 'nominal' | --- | Current telemetry mode |
| PLPAMPRT | 21.8691 | K | payload_preamp_redundant temperature |
| PLPAMP_T | 20.1915 | K | payload_preamp temperature |
| HK_MINDT | 0.199000358581543 | sec | Minimum H/K sample dt |
| HK_MAXDT | -7.80099964141846 | sec | Maximum H/K sample dt |
| Pipeline-Related Keywords | |||
| INGSTREV | '$Id: ingestpipe 7741 2010-04-06 02:02:59Z tim $' | --- | Svn revision |
| L0CREATE | '2010-06-29T09:15:40.347Z' | --- | Level-0 file creation date/time |
| CAL01 | '/wise/fops/cal/ifr/wise-meta-ingest.tbl' | --- | processing input file |
| CK01 | '/wise/fops/ref/mos/naif/10180/WISE_CK_2010_06_29_03_31_39.bc' | --- | processing input file |
| CK02 | '/wise/fops/ref/mos/naif/10180/WISE_CK_2010_06_29_05_08_22.bc' | --- | processing input file |
| CK03 | --- | input file | |
| CK-PRE01 | '/wise/fops/ref/mos/naif/10174/ WIS_PGEN_1026_2AwSSF_2010_174_18_34_17.bc' | --- | processing input file |
| CK-PRE02 | '/wise/fops/ref/mos/naif/ 10176/WIS_PGEN_WIS_WSEQ_1027_1A-PL_2010_174_19_01_22.bc' | --- | processing input file |
| HK01 | '/wise/fops/ref/mos/hk/hk.db' | --- | processing input file |
| SCLK01 | 'WIS_SCLKSCET.00023.tsc' | --- | processing input file |
| SPK01 | '/wise/fops/ref/mos/naif/10153/ WIS_NAV_SPK_WISEONLY_02Jun_RadarOD_2010_153_16_52_14.bsp' | --- | processing input file |
| SPK02 | '/wise/fops/ref/mos/naif/10155/ WIS_NAV_SPK_WISEONLY_04Jun_RadarOD_2010_155_17_52_43.bsp' | --- | processing input file |
| SPK03 | '/wise/fops/ref/mos/naif/10158/ WIS_NAV_SPK_WISEONLY_07Jun_RadarOD_2010_158_17_38_47.bsp' | --- | processing input file |
| SPK04 | '/wise/fops/ref/mos/naif/10160/ WIS_NAV_SPK_WISEONLY_09Jun_RadarOD_2010_160_16_20_14.bsp' | --- | processing input file |
| SPK05 | '/wise/fops/ref/mos/naif/10162/ WIS_NAV_SPK_WISEONLY_11Jun_RadarOD_2010_162_18_47_47.bsp' | --- | processing input file |
| SPK06 | '/wise/fops/ref/mos/naif/10165/ WIS_NAV_SPK_WISEONLY_14Jun_RadarOD_2010_165_17_40_46.bsp' | --- | processing input file |
| SPK07 | '/wise/fops/ref/mos/naif/10167/ WIS_NAV_SPK_WISEONLY_16Jun_RadarOD_2010_167_16_09_29.bsp' | --- | processing input file |
| SPK08 | '/wise/fops/ref/mos/naif/10169/ WIS_NAV_SPK_WISEONLY_18Jun_RadarOD_2010_169_17_47_43.bsp' | --- | processing input file |
| SPK09 | '/wise/fops/ref/mos/naif/10172/ WIS_NAV_SPK_WISEONLY_21Jun_RadarOD_2010_172_18_05_10.bsp' | --- | processing input file |
| SPK10 | '/wise/fops/ref/mos/naif/10174/ WIS_NAV_SPK_WISEONLY_23Jun_RadarOD_2010_174_17_26_09.bsp' | --- | processing input file |
| TLM01 | '/wise/fops/ingest/delivs/10180/ 10180T040553/WIS_HRP_PKT_FE1A_2010_180_04_05_53_CAT.bin' | --- | processing input file |
| TLM02 | '/wise/fops/ingest/delivs/10180/ 10180T040553/WIS_HRP_PKT_FE1B_2010_180_04_05_53_CAT.bin' | --- | processing input file |
| TLM03 | '/wise/fops/ingest/delivs/10180/ 10180T040553/WIS_HRP_PKT_FE1C_2010_180_04_05_53_CAT.bin' | --- | processing input file |
| TLM04 | '/wise/fops/ingest/delivs/10180/ 10180T040553/WIS_HRP_PKT_FE1D_2010_180_04_05_53_CAT.bin' | --- | processing input file |
| TRK01 | '/wise/fops/ref/mos/track/ WIS_NAV_WGT_21Jun_RadarOD_2010_172_18_05_10.txt ' | --- | processing input file |
| TRK02 | '/wise/fops/ref/mos/track/ WIS_NAV_WGT_23Jun_RadarOD_2010_174_17_26_09.txt ' | --- | processing input file |
| TRK03 | '/wise/fops/ref/mos/track/ WIS_NAV_WGT_25Jun_RadarOD_2010_176_17_40_56.txt ' | --- | processing input file |
| TRK04 | '/wise/fops/ref/mos/track/ WIS_NAV_WGT_28Jun_RadarOD_2010_179_17_37_00.txt ' | --- | processing input file |
| LONGSTRN | 'OGIP 1.0' | --- | FITS keyword indicating that strings longer than 68 characters are used in the header |
| WRELEASE | 'release-v3.5' | --- | WSDS s/w release tag |
| ICALDIR | '/wise/fops/cal/ifr' | --- | directory containing instrumental calibration files |
| Distortion Matrix | |||
| A_0_0 | 0.7228039 | --- | distortion coefficient |
| A_0_1 | -0.000124322 | --- | distortion coefficient |
| A_0_2 | -7.793528E-06 | --- | distortion coefficient |
| A_0_3 | -2.928111E-10 | --- | distortion coefficient |
| A_0_4 | -6.270019E-13 | --- | distortion coefficient |
| A_1_0 | -0.0007790246 | --- | distortion coefficient |
| A_1_1 | 1.344445E-06 | --- | distortion coefficient |
| A_1_2 | 1.228555E-09 | --- | distortion coefficient |
| A_1_3 | -5.895443E-13 | --- | distortion coefficient |
| A_2_0 | -1.629945E-06 | --- | distortion coefficient |
| A_2_1 | -1.186318E-10 | --- | distortion coefficient |
| A_2_2 | 1.503974E-12 | --- | distortion coefficient |
| A_3_0 | 2.756392E-09 | --- | distortion coefficient |
| A_3_1 | -4.586393E-13 | --- | distortion coefficient |
| A_4_0 | 1.794526E-12 | --- | distortion coefficient |
| A_DMAX | 2.046 | pixel | maximum correction |
| A_ORDER | 4 | --- | polynomial order, Axis 1, detector to sky |
| AP_0_0 | -0.7233219 | --- | distortion coefficient |
| AP_0_1 | 0.0001261763 | --- | distortion coefficient |
| AP_0_2 | 7.795772E-06 | --- | distortion coefficient |
| AP_0_3 | 2.696271E-10 | --- | distortion coefficient |
| AP_0_4 | 6.665114E-13 | --- | distortion coefficient |
| AP_1_0 | 0.0007777227 | --- | distortion coefficient |
| AP_1_1 | -1.342059E-06 | --- | distortion coefficient |
| AP_1_2 | -1.159637E-09 | --- | distortion coefficient |
| AP_1_3 | 6.084245E-13 | --- | distortion coefficient |
| AP_2_0 | 1.636841E-06 | --- | distortion coefficient |
| AP_2_1 | 1.107923E-10 | --- | distortion coefficient |
| AP_2_2 | -1.580363E-12 | --- | distortion coefficient |
| AP_3_0 | -2.759976E-09 | --- | distortion coefficient |
| AP_3_1 | 4.712913E-13 | --- | distortion coefficient |
| AP_4_0 | -1.804259E-12 | --- | distortion coefficient |
| AP_ORDER | 4 | --- | polynomial order, Axis 1, sky to detector |
| B_0_0 | -0.07946909 | --- | distortion coefficient |
| B_0_1 | 0.0003218232 | --- | distortion coefficient |
| B_0_2 | 1.165828E-06 | --- | distortion coefficient |
| B_0_3 | -3.174803E-09 | --- | distortion coefficient |
| B_0_4 | -8.545365E-13 | --- | distortion coefficient |
| B_1_0 | -0.0002481941 | --- | distortion coefficient |
| B_1_1 | -3.541684E-06 | --- | distortion coefficient |
| B_1_2 | -4.987962E-10 | --- | distortion coefficient |
| B_1_3 | 1.458031E-12 | --- | distortion coefficient |
| B_2_0 | -6.590985E-08 | --- | distortion coefficient |
| B_2_1 | -2.60016E-10 | --- | distortion coefficient |
| B_2_2 | -2.594371E-13 | --- | distortion coefficient |
| B_3_0 | -6.360093E-11 | --- | distortion coefficient |
| B_3_1 | 7.028808E-13 | --- | distortion coefficient |
| B_4_0 | 8.797685E-13 | --- | distortion coefficient |
| B_DMAX | 1.066 | pixel | maximum correction |
| B_ORDER | 4 | --- | polynomial order, Axis 2, detector to sky |
| BP_0_0 | 0.07930997 | --- | distortion coefficient |
| BP_0_1 | -0.0003239962 | --- | distortion coefficient |
| BP_0_2 | -1.163635E-06 | --- | distortion coefficient |
| BP_0_3 | 3.198763E-09 | --- | distortion coefficient |
| BP_0_4 | 8.509823E-13 | --- | distortion coefficient |
| BP_1_0 | 0.0002484437 | --- | distortion coefficient |
| BP_1_1 | 3.542573E-06 | --- | distortion coefficient |
| BP_1_2 | 4.895069E-10 | --- | distortion coefficient |
| BP_1_3 | -1.423222E-12 | --- | distortion coefficient |
| BP_2_0 | 6.524476E-08 | --- | distortion coefficient |
| BP_2_1 | 2.734704E-10 | --- | distortion coefficient |
| BP_2_2 | 2.664114E-13 | --- | distortion coefficient |
| BP_3_0 | 6.293886E-11 | --- | distortion coefficient |
| BP_3_1 | -7.164364E-13 | --- | distortion coefficient |
| BP_4_0 | -8.708176E-13 | --- | distortion coefficient |
| BP_ORDER | 4 | --- | polynomial order, Axis 2, sky to detector |
| SKEW | 0. | deg | Y-axis shear |
| Photometric Calibration | |||
| MAGZP | 20.73 | mag | Relative single exposure photometric zero point |
| MAGZPUNC | -999[4] | --- | 1-sigma uncertainty in MAGZP (-999 = undefined)[7] |
| PCAL | 0 | --- | 0 = static PCAL, 1 = photometric calibration zeropoints dynamically derived [7] |
[1] In Version 3.5 processing, BUNIT is incorrectly listed as 'DN' (instead of 'null') in the mask (msk) images.
[2] In Version 3.5 processing, the FILETYPE is incorrectly given as 'intensity image frame' instead of 'mask image frame' and 'uncertainty image frame' for the mask (msk) and uncertainty (unc) images, respectively.
[3] Various event keywords only appear in the header if the data were taken during one of these possible events:
'SAA'= within pre-defined SAA boundary 'MOON'= within moon keepout zone 'MOM'= momentum dumping 'OCCULTED'= Sun is occulted 'IMCAL'= image calibration 'DESC'= we are in a descending scan 'SCAN'= yes, we are in a science scan (you should always see this) 'ASCE'= we are in an ascending scan 'NEP' = North ecliptic pole crossing 'SEP' = South ecliptic pole crossing '12PM', '6AM', '6PM', '12AM' = Orbit pointsThe events are listed in the header keyword INEVENTS. For each event, an additional header entry is created, starting with 'EV'. The keyword value corresponds to the time since the event began. In the example header, the events ASCE and SCAN occur as listed under INEVENTS. Hence, the additional keywords EVASCE and EVSCAN are added to the header of this particular image:
INEVENTS= 'ASCE SCAN' / Active orbit events EVASCE = 2424.80147141218 / [sec] Time since orbit event start EVSCAN = 1663.1124714613 / [sec] Time since orbit event start
[4] -9999 or -999 indicate "no value"
[5] In Version 3.5 processing, the H/K derived header keyword description fields are missing. Instead of the description, the mnemonic and the time since the keyword was last sampled in the H/K database are listed. The correct keyword description is provided here for reference.
[6] WISE has two redundant scan mirror assemblies, indicated by [A] and [B].
[7] For single exposure products in the preliminary release, MAGZPUNC is always -999 (undefined) and the derivation of MAGZP was not dynamic, hence PCAL always has a value of 0.
Last update: 2011 April 8