Theli-Forum

Hallo Thelis,

diese Fehlermeldung hatte ich bisher noch nie.

*Error* in WCSlib: Invalid linear transformation parameters


Bis zur Astrometrie lief Theli einwandfrei durch.
Ich bearbeite Aufnehmen welche einen " Trauerrand" = Overscan besitzen.
Könnte dort eine Fehlerursache liegen ?
Ich hatte keine Fehlermeldung beim Splitting Script.

Die gesplitteten Bilder sehen ganz vernünftig aus.
Allerdings sind Farbkanäle ( R, B, ) anscheinend vertauscht.
Ich werde einfach mit den Einstellungen zur Bayer Matrix spielen.

Der Referenzkatalog wird geladen und ca. 1200 Referenzquellen gemeldet.
Die Parameter für create source cat sind wie im Wiki eingestellt. ich habe in weitere Versuchen den Wert für maximum FLAG auf 8 erhöht. Ohne Erfolg.
Im Anhang übersende ich das Logfile. Der Fehler wird in Zeile 3216 angezeigt.

ich bitte um Euren Rat.

viele Grüsse

Christian

schubi hat geschrieben:*Error* in WCSlib: Invalid linear transformation parameters

Da stimmt was mit der CD-matrix in deinem header nicht. vermutlich weil dein kameratreiber da bloedsinn reinschreibt.

poste mal den output von

Code: Alles auswählen

dfits rohbild.fits

und

Code: Alles auswählen

dfits rohbild_1.fits

hier rein, und dein splitting-script haengst du auch an.

mischa

Hallo Mischa,

hier das Ergebnis von dfits:

====> file M__45-001L_P.fit (main) <====
SIMPLE = T
BITPIX = 16 /8 unsigned int, 16 & 32 int, -32 & -64 real
NAXIS = 2 /number of axes
NAXIS1 = 3328 /fastest changing axis
NAXIS2 = 2030 /next to fastest changing axis
BSCALE = 1.0000000000000000 /physical = BZERO + BSCALE*array_value
BZERO = 32768.000000000000 /physical = BZERO + BSCALE*array_value
DATE-OBS= '2011-10-02T00:19:28' /YYYY-MM-DDThh:mm:ss observation start, UT
EXPTIME = 420.00000000000000 /Exposure time in seconds
EXPOSURE= 420.00000000000000 /Exposure time in seconds
SET-TEMP= -20.000000000000000 /CCD temperature setpoint in C
CCD-TEMP= -19.504774261606229 /CCD temperature at start of exposure in C
XPIXSZ = 7.7999999999999998 /Pixel Width in microns (after binning)
YPIXSZ = 7.7999999999999998 /Pixel Height in microns (after binning)
XBINNING= 1 /Binning factor in width
YBINNING= 1 /Binning factor in height
XORGSUBF= 0 /Subframe X position in binned pixels
YORGSUBF= 0 /Subframe Y position in binned pixels
IMAGETYP= 'Light Frame' / Type of image
EGAIN = 0.50000000000000000 /Electronic gain in e-/ADU
FOCALLEN= 0.00000000000000000 /Focal length of telescope in mm
APTDIA = 0.00000000000000000 /Aperture diameter of telescope in mm
APTAREA = 0.00000000000000000 /Aperture area of telescope in mm^2
SWCREATE= ' ' /Name of software that created the image
SBSTDVER= 'SBFITSEXT Version 1.0' /Version of SBFITSEXT standard in effect
OBJECT = 'NGC7331 '
TELESCOP= 'Ref_130 ' / telescope used to acquire this image
INSTRUME= 'QHYCCD QHY8PRO'
OBSERVER= ' '
NOTES = 'mit Idas'
FOCPOS = 20560
T_AMB = 14.600000000000000
FLIPSTAT= ' '
SWOWNER = ' ' /Licensed owner of software
END

Das Splitting Skript ist im Anhang

Hallo Mischa,
anbei noch ein Screenshot welches des Overscan anzeigt.
Auf der linken Seite beginnt die Nutzinformation bei x=29.
Ende der Nutzinformation ist bei x = 3069.
In der Y-Richtung Beginn bei y=7 und Ende bei 2029.
Gemäss Header hat das Bild die Abmessungen: x Richtung:3328 ; y Richtung 2030

viele Grüsse

Christian

Hier der Screenshot

christian,

das hat mit dem overscan nichts zu tun.

du hast vergessen mir den output von

Code: Alles auswählen

dfits rohbild_1.fits

zu schicken, also nachdem es durch das splitting-script durchgelaufen ist.
alles andere sieht i.O. aus, ich vermute daher du hast die pixelskala deiner kamera irgendwie voellig vermurkst.

wenn du mir auch noch das logfile des splitting-script schickst, dann kann ich mit sicherheit sagen, was los ist.

mischa

Hallo Mischa,
hier exemplarisch die Daten von Blau-Kanal

====> file M__45-001L_P_B_1OFC.fits (main) <====
SIMPLE = T / Fits format
BITPIX = -32 / bits per pixel
NAXIS = 2 / single image
NAXIS1 = 3040 / x size
NAXIS2 = 2018 / y size
BSCALE = 1.0 / pixel scale factor
BZERO = 0.0 / pixel value offset
CTYPE1 = 'RA---TAN ' / WCS coordinate type
CTYPE2 = 'DEC--TAN ' / WCS coordinate type
CRPIX1 = 1520.00 / WCS Coordinate reference pixel
CRPIX2 = 1009.00 / WCS Coordinate reference pixel
CD1_1 = 0.000000E+00 / WCS Coordinate scale matrix
CD2_2 = 0.000000E+00 / WCS Coordinate scale matrix
CD2_1 = 0.000000E+00 / WCS Coordinate scale matrix
CD1_2 = 0.000000E+00 / WCS Coordinate scale matrix
CRVAL1 = 56.70000000
CRVAL2 = 24.06055556
RADECSYS= 'FK5 ' / Coordinate system for equinox (FK4/FK5/GAPPT)
FILTER = 'Blue'
OBJECT = 'NGC7331 ' / observed target
AIRMASS = 1.000000 / (average) Airmass during observation
EXPTIME = 420.00 / effective exposure time
EQUINOX = 2000.00 / Equinox of coordinates
IMAGEID = 1 / Chip Number
GABODSID= 821 / Obs. date in days since 31/12/1998
ZP = -1.000000 / photometric zeropoint
COEFF = 1.000000 / photometric extiction coefficient
DATE-OBS= 2011-10-02T00:19:28
DUMMY2 = 0 / Dummy for adding new FITS cards later
DUMMY3 = 0 / Dummy for adding new FITS cards later
DUMMY4 = 0 / Dummy for adding new FITS cards later
DUMMY5 = 0 / Dummy for adding new FITS cards later
DUMMY6 = 0 / Dummy for adding new FITS cards later
DUMMY7 = 0 / Dummy for adding new FITS cards later
DUMMY8 = 0 / Dummy for adding new FITS cards later
DUMMY9 = 0 / Dummy for adding new FITS cards later
BAYERPAT= 'BGGR'
DUMMY11 = 0 / Dummy for adding new FITS cards later
DUMMY12 = 0 / Dummy for adding new FITS cards later
DUMMY13 = 0 / Dummy for adding new FITS cards later
DUMMY14 = 0 / Dummy for adding new FITS cards later
DUMMY15 = 0 / Dummy for adding new FITS cards later
DUMMY16 = 0 / Dummy for adding new FITS cards later
DUMMY17 = 0 / Dummy for adding new FITS cards later
DUMMY18 = 0 / Dummy for adding new FITS cards later
DUMMY19 = 0 / Dummy for adding new FITS cards later
DUMMY20 = 0 / Dummy for adding new FITS cards later
DUMMY21 = 0 / Dummy for adding new FITS cards later
DUMMY22 = 0 / Dummy for adding new FITS cards later
DUMMY23 = 0 / Dummy for adding new FITS cards later
DUMMY24 = 0 / Dummy for adding new FITS cards later
DUMMY25 = 0 / Dummy for adding new FITS cards later
DUMMY26 = 0 / Dummy for adding new FITS cards later
DUMMY27 = 0 / Dummy for adding new FITS cards later
DUMMY28 = 0 / Dummy for adding new FITS cards later
DUMMY29 = 0 / Dummy for adding new FITS cards later
DUMMY30 = 0 / Dummy for adding new FITS cards later
DUMMY31 = 0 / Dummy for adding new FITS cards later
DUMMY32 = 0 / Dummy for adding new FITS cards later
DUMMY33 = 0 / Dummy for adding new FITS cards later
DUMMY34 = 0 / Dummy for adding new FITS cards later
DUMMY35 = 0 / Dummy for adding new FITS cards later
DUMMY36 = 0 / Dummy for adding new FITS cards later
DUMMY37 = 0 / Dummy for adding new FITS cards later
DUMMY38 = 0 / Dummy for adding new FITS cards later
DUMMY39 = 0 / Dummy for adding new FITS cards later
DUMMY40 = 0 / Dummy for adding new FITS cards later
DUMMY41 = 0 / Dummy for adding new FITS cards later
DUMMY42 = 0 / Dummy for adding new FITS cards later
DUMMY43 = 0 / Dummy for adding new FITS cards later
DUMMY44 = 0 / Dummy for adding new FITS cards later
DUMMY45 = 0 / Dummy for adding new FITS cards later
DUMMY46 = 0 / Dummy for adding new FITS cards later
DUMMY47 = 0 / Dummy for adding new FITS cards later
DUMMY48 = 0 / Dummy for adding new FITS cards later
DUMMY49 = 0 / Dummy for adding new FITS cards later
DUMMY50 = 0 / Dummy for adding new FITS cards later
DATAMD5 = '00eec1b1675776c5e779281cfc02d7a3' / MD5 checksum
HISTORY
HISTORY mefsplit: THELI Pipeline Version: 1.5.1
HISTORY mefsplit: called at 2012-02-05T14:39:41
HISTORY mefsplit: Split extension 1 from M__45-001L_P.fits
HISTORY mefsplit: Save extension 1 as chip 1
HISTORY
HISTORY preprocess: THELI Pipeline Version: 1.5.1
HISTORY preprocess: called at 2012-02-05T14:40:41
HISTORY image has been trimmed
HISTORY trim section: Xmin = 28; Xmax = 3067; Ymin = 8; Ymax = 2025
HISTORY image has been bias subtracted
HISTORY Bias frame: Darks_1.fits
HISTORY image has been flat fielded
HISTORY Flat frame: Processed-Flats_1.fits
HISTORY The flatfield has been scaled to 1.015010
HISTORY Processed-Flats_1.fits 1.015010
END

schubi hat geschrieben:CD1_1 = 0.000000E+00 / WCS Coordinate scale matrix
CD2_2 = 0.000000E+00 / WCS Coordinate scale matrix
CD2_1 = 0.000000E+00 / WCS Coordinate scale matrix
CD1_2 = 0.000000E+00 / WCS Coordinate scale matrix

wie gesagt, du hast bei erstellung deiner kamera keine pixelskala angegeben...
lad das ding nochmal, schreib die pixelskala rein, und neu abspeichern.
dann nochmal von vorne reduzieren.

mischa

Hallo Mischa,
danke.
Das war mein Fehler und dein Rat die Lösung des Problems.
Inzwischen läuft die Coaddition.

viele Grüsse
Christian