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[task #15676] Calculating SIP to TPV coversions
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From: |
Sachin Kumar Singh |
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Subject: |
[task #15676] Calculating SIP to TPV coversions |
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Date: |
Sun, 7 Jun 2020 18:25:44 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:76.0) Gecko/20100101 Firefox/76.0 |
Update of task #15676 (project gnuastro):
Status: In Progress => Done
Percent Complete: 0% => 100%
Open/Closed: Open => Closed
_______________________________________________________
Follow-up Comment #1:
The task is complete and now SIP->PV:-). The output of the sample file used to
create the SIP fits file, which was used to make the final PV file are shown
below:
>From test Gnuastro
XTENSION= 'IMAGE ' / IMAGE extension
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 3352 / length of data axis 1
NAXIS2 = 2532 / length of data axis 2
PCOUNT = 0 / required keyword; must = 0
GCOUNT = 1 / required keyword; must = 1
/ World Coordinate System (WCS)
WCSAXES = 2 / Number of coordinate axes
CRPIX1 = 1763.09429932 / Pixel coordinate of reference point
CRPIX2 = 612.79893494 / Pixel coordinate of reference point
PC1_1 = -0.015946182574045 / Coordinate transformation matrix element
PC1_2 = 0.999917332233850 / Coordinate transformation matrix element
PC2_1 = -0.999829574614539 / Coordinate transformation matrix element
PC2_2 = -0.015870824365013 / Coordinate transformation matrix element
CDELT1 = 0.00078807879448870 / [deg] Coordinate increment at reference point
CDELT2 = 0.00078813807299668 / [deg] Coordinate increment at reference point
CUNIT1 = 'deg' / Units of coordinate increment and value
CUNIT2 = 'deg' / Units of coordinate increment and value
CTYPE1 = 'RA---TPV' / TAN (gnomonic) projection + distortions
CTYPE2 = 'DEC--TPV' / TAN (gnomonic) projection + distortions
CRVAL1 = 113.3064285324 / [deg] Coordinate value at reference point
CRVAL2 = 31.8788976712 / [deg] Coordinate value at reference point
LONPOLE = 180.0 / [deg] Native longitude of celestial pole
LATPOLE = 31.8788976712 / [deg] Native latitude of celestial pole
MJDREFI = 0.0 / [d] MJD of fiducial time, integer part
MJDREFF = 0.0 / [d] MJD of fiducial time, fractional part
RADESYS = 'FK5' / Equatorial coordinate system
EQUINOX = 2000.0 / [yr] Equinox of equatorial coordinates
PV1_1 = 9.999868977236E-01 / TPV coefficient: x
PV1_2 = -8.842015406258E-06 / TPV coefficient: y
PV1_4 = 1.822783853090E-04 / TPV coefficient: xx
PV1_5 = 1.365776728868E-04 / TPV coefficient: xy
PV1_6 = 2.257022520460E-05 / TPV coefficient: yy
PV1_7 = 1.920222380358E-04 / TPV coefficient: xxx
PV1_8 = -3.830056501464E-05 / TPV coefficient: xxy
PV1_9 = -1.347022772508E-04 / TPV coefficient: xyy
PV1_10 = -2.471225520868E-05 / TPV coefficient: yyy
PV2_0 = 4.672062523823E-04 / TPV coefficient: 1
PV2_1 = 1.000878428319E+00 / TPV coefficient: y
PV2_2 = -4.973468945505E-04 / TPV coefficient: x
PV2_4 = -1.411294363996E-04 / TPV coefficient: yy
PV2_5 = 7.439750263035E-04 / TPV coefficient: yx
PV2_6 = -1.224454154415E-03 / TPV coefficient: xx
PV2_7 = -7.014289760876E-04 / TPV coefficient: yyy
PV2_8 = 3.351859178423E-04 / TPV coefficient: yyx
PV2_9 = -4.470842932691E-04 / TPV coefficient: yxx
PV2_10 = 9.945076014401E-04 / TPV coefficient: xxx
/ Versions and date
DATE = '2020-06-07T21:30:48' / file creation date (YYYY-MM-DDThh:mm:ss UT)
CFITSIO = '3.47 ' / CFITSIO version.
WCSLIB = '7.1 ' / WCSLIB version.
GSL = '2.6 ' / GNU Scientific Library version.
GNUASTRO= '0.12 ' / GNU Astronomy Utilities version.
COMMIT = 'e00f02a-dirty' / Git's commit description in running dir.
Sample file used for testing:
XTENSION= 'IMAGE ' / IMAGE extension
BITPIX = -32 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 3352 / length of data axis 1
NAXIS2 = 2532 / length of data axis 2
PCOUNT = 0 / required keyword; must = 0
GCOUNT = 1 / required keyword; must = 1
/ Versions and date
DATE = '2020-05-13T21:59:29' / file creation date (YYYY-MM-DDThh:mm:ss UT)
CFITSIO = '3.47 ' / CFITSIO version.
WCSLIB = '6.4 ' / WCSLIB version.
GSL = '2.6 ' / GNU Scientific Library version.
GNUASTRO= '0.11.57-561c' / GNU Astronomy Utilities version.
HISTORY Astrometric solution by SCAMP version 2.6.7 (2020-04-09)
COMMENT (c) 2010-2016 IAP/CNRS/UPMC
COMMENT
EQUINOX = 2000.00000000 / Mean equinox
RADESYS = 'ICRS ' / Astrometric system
CTYPE1 = 'RA---TPV' / WCS projection type for this axis
CTYPE2 = 'DEC--TPV' / WCS projection type for this axis
CUNIT1 = 'deg ' / Axis unit
CUNIT2 = 'deg ' / Axis unit
CRVAL1 = 1.133064285324E+02 / World coordinate on this axis
CRVAL2 = 3.187889767116E+01 / World coordinate on this axis
CRPIX1 = 1.763094299320E+03 / Reference pixel on this axis
CRPIX2 = 6.127989349400E+02 / Reference pixel on this axis
CD1_1 = -1.256684833965E-05 / Linear projection matrix
CD1_2 = 7.880136457752E-04 / Linear projection matrix
CD2_1 = -7.880037542618E-04 / Linear projection matrix
CD2_2 = -1.250840093191E-05 / Linear projection matrix
PV1_0 = 9.714784609182E-05 / Projection distortion parameter
PV1_1 = 9.999868977236E-01 / Projection distortion parameter
PV1_2 = -8.842015406255E-06 / Projection distortion parameter
PV1_4 = 1.822783853090E-04 / Projection distortion parameter
PV1_5 = 1.365776728868E-04 / Projection distortion parameter
PV1_6 = 2.257022520459E-05 / Projection distortion parameter
PV1_7 = 1.920222380359E-04 / Projection distortion parameter
PV1_8 = -3.830056501464E-05 / Projection distortion parameter
PV1_9 = -1.347022772508E-04 / Projection distortion parameter
PV1_10 = -2.471225520868E-05 / Projection distortion parameter
PV2_0 = 4.672062523823E-04 / Projection distortion parameter
PV2_1 = 1.000878428319E+00 / Projection distortion parameter
PV2_2 = -4.973468945505E-04 / Projection distortion parameter
PV2_4 = -1.411294363997E-04 / Projection distortion parameter
PV2_5 = 7.439750263035E-04 / Projection distortion parameter
PV2_6 = -1.224454154415E-03 / Projection distortion parameter
PV2_7 = -7.014289760875E-04 / Projection distortion parameter
PV2_8 = 3.351859178423E-04 / Projection distortion parameter
PV2_9 = -4.470842932692E-04 / Projection distortion parameter
PV2_10 = 9.945076014402E-04 / Projection distortion parameter
FGROUPNO= 1 / SCAMP field group label
ASTIRMS1= 0.000000000000E+00 / Astrom. dispersion RMS (intern., high S/N)
ASTIRMS2= 0.000000000000E+00 / Astrom. dispersion RMS (intern., high S/N)
ASTRRMS1= 2.056759573495E-04 / Astrom. dispersion RMS (ref., high S/N)
ASTRRMS2= 2.493773027890E-04 / Astrom. dispersion RMS (ref., high S/N)
ASTINST = 1 / SCAMP astrometric instrument label
FLXSCALE= 0.000000000000E+00 / SCAMP relative flux scale
MAGZEROP= 0.00000000 / SCAMP zero-point
PHOTIRMS= 0.00000000 / mag dispersion RMS (internal, high S/N)
PHOTINST= 1 / SCAMP photometric instrument label
PHOTLINK= F / True if linked to a photometric field
END
The code for the same is pushed here
<https://gitlab.com/sachinkumarsingh092/gnuastro-test-files>. This task can be
closed now.
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/task/?15676>
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- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/05
- [task #15676] Calculating SIP to TPV coversions,
Sachin Kumar Singh <=
- [task #15676] Calculating SIP to TPV coversions, Raul Infante-Sainz, 2020/06/17
- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/17
- [task #15676] Calculating SIP to TPV coversions, Raul Infante-Sainz, 2020/06/17
- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/19
- [task #15676] Calculating SIP to TPV coversions, Raul Infante-Sainz, 2020/06/19
- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/19
- [task #15676] Calculating SIP to TPV coversions, Raul Infante-Sainz, 2020/06/22
- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/22
- [task #15676] Calculating SIP to TPV coversions, Mohammad Akhlaghi, 2020/06/22
- [task #15676] Calculating SIP to TPV coversions, Sachin Kumar Singh, 2020/06/22