WFCAM Science Archive

Glossary of WSA NonSurvey attributes (UKIDSSDR2)

This Glossary alphabetically lists all attributes used in the WSA NonSurvey database(s) held in the WSA. If you would like to have more information about the schema tables please use the Schema Browser (other Browser versions).

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

A

Name Schema Table Database Description Type Length Unit Default Value Unified Content Descriptor

a00 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the zeroth-order spatial map coefficient float 8 PHOT_ZP

a01 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the first-order in y spatial map coefficient float 8 PHOT_ZP

a02 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the second-order in y spatial map coefficient float 8 PHOT_ZP

a10 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the first-order in x spatial map coefficient float 8 PHOT_ZP

a11 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the first-order in x and y spatial map coefficient float 8 PHOT_ZP

a12 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the second-order in y, first order in x spatial map coefficient float 8 PHOT_ZP

a20 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the second-order in x spatial map coefficient float 8 PHOT_ZP

a21 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the second-order in x, first order in y spatial map coefficient float 8 PHOT_ZP

a22 [nspid]CurrentSpatialMap, [nspid]PreviousSpatialMap WSA NonSurvey the second-order in x and y spatial map coefficient float 8 PHOT_ZP

adjacentFrameTolerance [nspid]Programme WSA NonSurvey The match tolerance for adjacent frames in the survey real 4 Degrees ??

aebv [nspid]Filter WSA NonSurvey The constant to multiply the Schlegel map E(B-V) by to get the total galactic extinction. real 4 -0.9999995e9

agentId [nspid]Multiframe WSA NonSurvey Externally assigned unique identifier for remote agent (if any) {image primary HDU keyword: AGENTID} varchar 64 NONE ??

airTemp [nspid]Multiframe WSA NonSurvey Air temperature {image primary HDU keyword: AIRTEMP} real 4 degrees_Celsius -0.9999995e9 PHYS_TEMP_MISC

ambiPressure [nspid]Multiframe WSA NonSurvey Ambient pressure {image primary HDU keyword: BARPRESS} real 4 -0.9999995e9 PHYS_PRESS_GAS

amEnd [nspid]Multiframe WSA NonSurvey Airmass at end of observation {image primary HDU keyword: AMEND} real 4 -0.9999995e9 PHOT_ATM_AIRMASS

amStart [nspid]Multiframe WSA NonSurvey Airmass at start of observation {image primary HDU keyword: AMSTART} real 4 -0.9999995e9 PHOT_ATM_AIRMASS

aperCor1 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 1⁄2 × core flux {catalogue extension keyword: APCOR1}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor2 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 1⁄√2 core flux {catalogue extension keyword: APCOR2}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor3 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: core flux {catalogue extension keyword: APCOR3}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor4 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: √2 × core flux {catalogue extension keyword: APCOR4}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor5 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 2 × core flux {catalogue extension keyword: APCOR5}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor6 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 2√2 × core flux {catalogue extension keyword: APCOR6}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCor7 [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: 4 × core flux {catalogue extension keyword: APCOR7}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperCorPeak [nspid]MultiframeDetector WSA NonSurvey Stellar aperture correction: peak height {catalogue extension keyword: APCORPK}
corrected photometry = 2.5×log₁₀(flux) + aperCor + skyCorr real 4 -0.9999995e9 ??

Aperture corrections in magnitudes needed to correct the assorted aperture-like measures produced in the catalogues onto the equivalent of a total flux stellar system. These constitute the components of a curve-of-growth analysis contained within the catalogues with radii defined in the previous table. They also work well as a first order seeing correction for faint galaxies. Larger aperture corrections are not included.

aperFlux1 [nspid]Detection WSA NonSurvey default aperture flux counts 1 {catalogue TType keyword: Aper_flux_1}
1/2 × rcore real 4 ADU PHOT_INTENSITY_ADU

These are a series of different radii soft-edged apertures designed to adequately sample the curve-of-growth of the majority of images and to provide fixed-sized aperture fluxes for all images. The scale size for these apertures is selected by defining a scale radius ≈<FWHM> for site+instrument. In the case of WFCAM this "core" radius (rcore) has been fixed at 1.0 arcsec for convenience in inter-comparison with other datasets. A 1.0 arcsec radius is equivalent to 2.5 pixels for non-interleaved data, 5.0 pixels for 2×2 interleaved data, and 7.5 pixels for 3×3 interleaved data. In ≈1 arcsec seeing an rcore-radius aperture contains roughly 2/3 of the total flux of stellar images. [In general the rcore parameter is user specifiable and hence is recorded in the output catalogue FITS header.]
The aperture fluxes are sky-corrected integrals (summations) with a soft-edge (ie. pro-rata flux division for boundary pixels). However, for overlapping images they are more subtle than this since they are in practice simultaneously fitted top-hat functions, to minimise the effects of crowding. Images external to the blend are also flagged and not included in the large radius summations.
Extras for generalised galaxy photometry further spaced in radius to ensure reasonable sampling further out.
Note these are all corrected for pixels from overlapping neighbouring images. The aperture fluxes can be combined with later-derived aperture corrections for general purpose photometry and together with pHeight (the peak flux) give a simple curve-of-growth measurement which forms the basis of the morphological classification scheme.

aperFlux1 [nspid]Detection WSA NonSurvey Default aperture flux counts 1 {catalogue TType keyword: Aper_flux_1}
1/2 × rcore real 4 ADU PHOT_INTENSITY_ADU

These are a series of different radii soft-edged apertures designed to adequately sample the curve-of-growth of the majority of images and to provide fixed-sized aperture fluxes for all images. The scale size for these apertures is selected by defining a scale radius ≈<FWHM> for site+instrument. In the case of WFCAM this "core" radius (rcore) has been fixed at 1.0 arcsec for convenience in inter-comparison with other datasets. A 1.0 arcsec radius is equivalent to 2.5 pixels for non-interleaved data, 5.0 pixels for 2×2 interleaved data, and 7.5 pixels for 3×3 interleaved data. In ≈1 arcsec seeing an rcore-radius aperture contains roughly 2/3 of the total flux of stellar images. [In general the rcore parameter is user specifiable and hence is recorded in the output catalogue FITS header.]
The aperture fluxes are sky-corrected integrals (summations) with a soft-edge (ie. pro-rata flux division for boundary pixels). However, for overlapping images they are more subtle than this since they are in practice simultaneously fitted top-hat functions, to minimise the effects of crowding. Images external to the blend are also flagged and not included in the large radius summations.
Extras for generalised galaxy photometry further spaced in radius to ensure reasonable sampling further out.
Note these are all corrected for pixels from overlapping neighbouring images. The aperture fluxes can be combined with later-derived aperture corrections for general purpose photometry and together with pHeight (the peak flux) give a simple curve-of-growth measurement which forms the basis of the morphological classification scheme.

aperFlux10 [nspid]Detection WSA NonSurvey default aperture flux 10 {catalogue TType keyword: Aper_flux_10}
7 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux10err [nspid]Detection WSA NonSurvey Error in aperture flux 10 {catalogue TType keyword: Aper_flux_10_err} real 4 ADU ERROR

aperFlux11 [nspid]Detection WSA NonSurvey default aperture flux 11 {catalogue TType keyword: Aper_flux_11}
8 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux11err [nspid]Detection WSA NonSurvey Error in aperture flux 11 {catalogue TType keyword: Aper_flux_11_err} real 4 ADU ERROR

aperFlux12 [nspid]Detection WSA NonSurvey default aperture flux 12 {catalogue TType keyword: Aper_flux_12}
10 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux12err [nspid]Detection WSA NonSurvey Error in aperture flux 12 {catalogue TType keyword: Aper_flux_12_err} real 4 ADU ERROR

aperFlux13 [nspid]Detection WSA NonSurvey default aperture flux 13 {catalogue TType keyword: Aper_flux_13}
12 × rcore ie. ≈24 arcsec diameter. (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux13err [nspid]Detection WSA NonSurvey Error in aperture flux 13 {catalogue TType keyword: Aper_flux_13_err} real 4 ADU ERROR

aperFlux1err [nspid]Detection WSA NonSurvey Error in aperture flux counts 1 {catalogue TType keyword: Aper_flux_1_err} real 4 ADU ERROR

aperFlux2 [nspid]Detection WSA NonSurvey default aperture flux 2 {catalogue TType keyword: Aper_flux_2}
1/√2 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux2 [nspid]Detection WSA NonSurvey Default aperture flux 2 {catalogue TType keyword: Aper_flux_2}
1/√2 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux2err [nspid]Detection WSA NonSurvey Error in aperture flux 2 {catalogue TType keyword: Aper_flux_2_err} real 4 ADU ERROR

aperFlux3 [nspid]Detection WSA NonSurvey default aperture flux 3 {catalogue TType keyword: Aper_flux_3}
rcore; recommended if a single number is required to represent the flux for ALL images. (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux3err [nspid]Detection WSA NonSurvey Error in aperture flux 3 {catalogue TType keyword: Aper_flux_3_err} real 4 ADU ERROR

aperFlux4 [nspid]Detection WSA NonSurvey default aperture flux 4 {catalogue TType keyword: Aper_flux_4}
√2 × rcore; ensures ∼99% of PSF flux. (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux4err [nspid]Detection WSA NonSurvey Error in aperture flux 4 {catalogue TType keyword: Aper_flux_4_err} real 4 ADU ERROR

aperFlux5 [nspid]Detection WSA NonSurvey default aperture flux 5 {catalogue TType keyword: Aper_flux_5}
2 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux5err [nspid]Detection WSA NonSurvey Error in aperture flux 5 {catalogue TType keyword: Aper_flux_5_err} real 4 ADU ERROR

aperFlux6 [nspid]Detection WSA NonSurvey default aperture flux 6 {catalogue TType keyword: Aper_flux_6}
2√2 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux6err [nspid]Detection WSA NonSurvey Error in aperture flux 6 {catalogue TType keyword: Aper_flux_6_err} real 4 ADU ERROR

aperFlux7 [nspid]Detection WSA NonSurvey default aperture flux 7 {catalogue TType keyword: Aper_flux_7}
4 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux7err [nspid]Detection WSA NonSurvey Error in aperture flux 7 {catalogue TType keyword: Aper_flux_7_err} real 4 ADU ERROR

aperFlux8 [nspid]Detection WSA NonSurvey default aperture flux 8 {catalogue TType keyword: Aper_flux_8}
5 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux8err [nspid]Detection WSA NonSurvey Error in aperture flux 8 {catalogue TType keyword: Aper_flux_8_err} real 4 ADU ERROR

aperFlux9 [nspid]Detection WSA NonSurvey default aperture flux 9 {catalogue TType keyword: Aper_flux_9}
6 × rcore (see glossary entry for aperFlux1) real 4 ADU PHOT_INTENSITY_ADU

aperFlux9err [nspid]Detection WSA NonSurvey Error in aperture flux 9 {catalogue TType keyword: Aper_flux_9_err} real 4 ADU ERROR

aperMag1 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 1 {catalogue extension keyword: APCOR1} real 4 mag PHOT_INT-MAG

aperMag1 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 1 real 4 mag PHOT_INT-MAG

aperMag10 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 10 real 4 mag PHOT_INT-MAG

aperMag10 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 10 real 4 mag PHOT_INT-MAG

aperMag10err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 10 real 4 mag ERROR

aperMag11 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 11 real 4 mag PHOT_INT-MAG

aperMag11 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 11 real 4 mag PHOT_INT-MAG

aperMag11err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 11 real 4 mag ERROR

aperMag12 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 12 real 4 mag PHOT_INT-MAG

aperMag12 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 12 real 4 mag PHOT_INT-MAG

aperMag12err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 12 real 4 mag ERROR

aperMag13 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 13 real 4 mag PHOT_INT-MAG

aperMag13 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 13 real 4 mag PHOT_INT-MAG

aperMag13err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 13 real 4 mag ERROR

aperMag1err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 1 real 4 mag ERROR

aperMag2 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 2 {catalogue extension keyword: APCOR2} real 4 mag PHOT_INT-MAG

aperMag2 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 2 real 4 mag PHOT_INT-MAG

aperMag2err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 2 real 4 mag ERROR

aperMag3 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 3 {catalogue extension keyword: APCOR3} real 4 mag PHOT_INT-MAG

aperMag3 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 3 real 4 mag PHOT_INT-MAG

aperMag3err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 3 real 4 mag ERROR

aperMag4 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 4 {catalogue extension keyword: APCOR4} real 4 mag PHOT_INT-MAG

aperMag4 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 4 real 4 mag PHOT_INT-MAG

aperMag4err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 4 real 4 mag ERROR

aperMag5 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 5 {catalogue extension keyword: APCOR5} real 4 mag PHOT_INT-MAG

aperMag5 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 5 real 4 mag PHOT_INT-MAG

aperMag5err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 5 real 4 mag ERROR

aperMag6 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 6 {catalogue extension keyword: APCOR6} real 4 mag PHOT_INT-MAG

aperMag6 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 6 real 4 mag PHOT_INT-MAG

aperMag6err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 6 real 4 mag ERROR

aperMag7 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 7 {catalogue extension keyword: APCOR7} real 4 mag PHOT_INT-MAG

aperMag7 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 7 real 4 mag PHOT_INT-MAG

aperMag7err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 7 real 4 mag ERROR

aperMag8 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 8 real 4 mag PHOT_INT-MAG

aperMag8 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 8 real 4 mag PHOT_INT-MAG

aperMag8err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 8 real 4 mag ERROR

aperMag9 [nspid]Detection WSA NonSurvey default calibrated aperture magnitude 9 real 4 mag PHOT_INT-MAG

aperMag9 [nspid]Detection WSA NonSurvey Calibrated and corrected aperture magnitude 9 real 4 mag PHOT_INT-MAG

aperMag9err [nspid]Detection WSA NonSurvey Error in calibrated aperture magnitude 9 real 4 mag ERROR

aperture [nspid]RequiredListDrivenProduct WSA NonSurvey CASU list-driven photometry tool option specifying the fixed radius to be used for photometry real 4 pixels ??

apertureX [nspid]Multiframe WSA NonSurvey Aperture X axis coordinate {image primary HDU keyword: APER_X} real 4 arcsec -0.9999995e9

apertureY [nspid]Multiframe WSA NonSurvey Aperture Y axis coordinate {image primary HDU keyword: APER_Y} real 4 arcsec -0.9999995e9

aProf1 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 1 {catalogue TType keyword: Areal_1_profile} int 4 pixels NUMBER

Number of pixels above a series of threshold levels relative to local sky. Levels are set at T, 2T, 4T, 8T … 128T where T is the threshold. These can be thought of as a sort of poor man's radial profile. Note that for now deblended, ie. overlapping images, only the first areal profile is computed and the rest are set to -1 flagging the difficulty of computing accurate profiles.
For blended images this parameter is used to flag the start of the sequence of the deblended components by setting the first in the sequence to 0.

aProf2 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 2 {catalogue TType keyword: Areal_2_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf3 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 3 {catalogue TType keyword: Areal_3_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf4 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 4 {catalogue TType keyword: Areal_4_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf5 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 5 {catalogue TType keyword: Areal_5_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf6 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 6 {catalogue TType keyword: Areal_6_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf7 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 7 {catalogue TType keyword: Areal_7_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

aProf8 [nspid]Detection WSA NonSurvey No. of pixels above rethreshold 8 {catalogue TType keyword: Areal_8_profile}
(see glossary entry for aProf1) int 4 pixels NUMBER

astigAmpl [nspid]Multiframe WSA NonSurvey Astigmatism: amplitude {image primary HDU keyword: AAMP} real 4 -0.9999995e9

astigPhi [nspid]Multiframe WSA NonSurvey Astigmatism: angle {image primary HDU keyword: APHI} real 4 -0.9999995e9

astromID [nspid]DifferenceImage WSA NonSurvey the ID of the superframe for the astrometry bigint 8 ID_FRAME

autoGuiderFreq [nspid]Multiframe WSA NonSurvey Autoguider: Frequency {image primary HDU keyword: AGFREQ} real 4 -0.9999995e9

avSaturLevel [nspid]MultiframeDetector WSA NonSurvey Average saturation level in frame {catalogue extension keyword: SATURATE} real 4 -0.9999995e9 ??

An estimate directly from saturated images on the frame at what level image saturation occurs, including sky. This varies from detector to detector depending on the relative gains applied to bring them to a uniform flatfield response etc.

avStellarEll [nspid]MultiframeDetector WSA NonSurvey Average stellar ellipticity (1-b/a) {catalogue extension keyword: ELLIPTIC}
Should not average much above 0.15 for "normal" frames real 4 -0.9999995e9 PHYS_ELLIPTICITY

axis1Length [nspid]MultiframeDetector WSA NonSurvey length of data axis 1 (X-axis size) {image extension keyword: (Z)NAXIS1} int 4 NUMBER

axis2Length [nspid]MultiframeDetector WSA NonSurvey length of data axis 2 (Y-axis size) {image extension keyword: (Z)NAXIS2} int 4 NUMBER

WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK
Tel +44 131 668 8356 (office)
or +44 131 668 8100 (switchboard)

wsa-support@roe.ac.uk
27/01/2009