Sorry for the delay, I had to put back the same setup together to test again with 1.9.1. And that did it. No more space character (see below).
Thanks for your support, Jasem.
Sébastien
FITS HEADER
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 5184 / length of data axis 1
NAXIS2 = 3456 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BZERO = 32768 / offset data range to that of unsigned short
BSCALE = 1 / default scaling factor
DATAMIN = 1751. / Minimum value
DATAMAX = 4523. / Maximum value
MIN1 = 1751. / Min Channel 1
MAX1 = 4523. / Max Channel 1
MEAN1 = 2048.74838785841 / Mean Channel 1
MEDIAN1 = 2049. / Median Channel 1
STDDEV1 = 14.9475417720419 / Standard Deviation Channel 1
ROWORDER= 'TOP-DOWN' / ROWORDER
INSTRUME= 'Canon DSLR EOS 650D' / INSTRUME
TELESCOP= 'Celestron AVX' / Celestron AVX
OBSERVER= 'Sebastien Seb@stro' / Sebastien Seb@stro
OBJECT = 'NGC_2238' / OBJECT
EXPTIME = 0.1 / Total Exposure Time (s)
CCD-TEMP= 23. / CCD Temperature (Celsius)
PIXSIZE1= 4.3 / Pixel Size 1 (microns)
PIXSIZE2= 4.3 / Pixel Size 2 (microns)
XBINNING= 1 / Binning factor in width
YBINNING= 1 / Binning factor in height
XPIXSZ = 4.3 / X binned pixel size in microns
YPIXSZ = 4.3 / Y binned pixel size in microns
FRAME = 'Light ' / FRAME
IMAGETYP= 'Light Frame' / IMAGETYP
XBAYROFF= 0 / X offset of Bayer array
YBAYROFF= 0 / Y offset of Bayer array
BAYERPAT= 'RGGB ' / Bayer color pattern
FOCALLEN= 2032. / Focal Length (mm)
APTDIA = 203.2 / Telescope diameter (mm)
SCALE = 0.4365601 / arcsecs per pixel
SITELAT = 46.91556 / Latitude of the imaging site in degrees
SITELONG= -71.55139 / Longitude of the imaging site in degrees
AIRMASS = 4.916825 / AIRMASS
OBJCTAZ = 264.9341 / Azimuth of center of image in Degrees
OBJCTALT= 11.55105 / Altitude of center of image in Degrees
OBJCTRA = '6 30 38.39' / Object J2000 RA in Hours
OBJCTDEC= '5 00 49.73' / Object J2000 DEC in Degrees
RA = 97.65996 / Object J2000 RA in Degrees
DEC = 5.013815 / Object J2000 DEC in Degrees
EQUINOX = 2000 / EQUINOX
DATE-OBS= '2021-08-29T17:59:01.192' / UTC start date of observation
COMMENT = ' ' / Generated by INDI
ISOSPEED= 800 / ISOSPEED
END = ' '
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Thanks for your reply Jasem.
Version is :
INDI Library: 1.8.9
Code v1.8.9-1-g4c3f1c60. Protocol 1.7.
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Hi,
I'm new here, so I apologize in advance if I'm not posting this in the right place. In such case, please let me know. Here it goes: I'm wondering if it is possible that the FITS header values for "OBJCRA" and "OBJCDEC" (see header below) are not conform to the latest NASA FITS standard (should not have a leading space). The image from which the header was extracted was taken with a Canon 650D and acquired by Astroberry/KStars/Ekos and riding on a Celestron AVX mount.
The reason I'm asking this is because it seems to give some trouble to one of my third party platesolving client which erroneously parses the coordinates as :
- parsed Ra coordinate : "00h 05m 23.33s" instead of "6h 30m 38.84s"
- parsed Dec coordinate: "-00d 02m 18.55s" instead of "4d 56m 54.41s"
I rapidly went through the latest FITS standard (fits.gsfc.nasa.gov/standard40/fits_standard40aa-le.pdf, section 4.2.1.1) and it seem that a leading string character is "significant" and hence should not be a 'space' in this context, or so I've been by the developper of the third party platesolving client. I checked with other acquisition software (NINA, MaximDL, APT, SharpCap) and they all have the same formatting without the leading "space" character for these two specific FITS keywords so would it be possible that Ekos formats those incorrectly ?
Regards,
Sebastien
FITS HEADER
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 5184 / length of data axis 1
NAXIS2 = 3456 / length of data axis 2
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
BZERO = 32768 / offset data range to that of unsigned short
BSCALE = 1 / default scaling factor
ROWORDER= 'TOP-DOWN' / Row Order
INSTRUME= 'Canon DSLR EOS 650D' / CCD Name
TELESCOP= 'Celestron AVX' / Telescope name
OBSERVER= 'Sebastien Seb@stro' / Observer name
OBJECT = 'Unknown ' / Object name
EXPTIME = 2.400000E+02 / Total Exposure Time (s)
CCD-TEMP= -2. / CCD Temperature (Celsius)
PIXSIZE1= 4.300000E+00 / Pixel Size 1 (microns)
PIXSIZE2= 4.300000E+00 / Pixel Size 2 (microns)
XBINNING= 1 / Binning factor in width
YBINNING= 1 / Binning factor in height
XPIXSZ = 4.300000E+00 / X binned pixel size in microns
YPIXSZ = 4.300000E+00 / Y binned pixel size in microns
FRAME = 'Light ' / Frame Type
IMAGETYP= 'Light Frame' / Frame Type
XBAYROFF= 0 / X offset of Bayer array
YBAYROFF= 0 / Y offset of Bayer array
BAYERPAT= 'RGGB ' / Bayer color pattern
FOCALLEN= 3.38E+02 / Focal Length (mm)
APTDIA = 7.00E+01 / Telescope diameter (mm)
SCALE = 2.624527E+00 / arcsecs per pixel
SITELAT = 4.691667E+01 / Latitude of the imaging site in degrees
SITELONG= -7.155306E+01 / Longitude of the imaging site in degrees
AIRMASS = 1.119998E+02 / Airmass
OBJCTRA = ' 6 30 38.84' / Object J2000 RA in Hours
OBJCTDEC= ' 4 56 54.41' / Object J2000 DEC in Degrees
RA = 9.766184E+01 / Object J2000 RA in Degrees
DEC = 4.948448E+00 / Object J2000 DEC in Degrees
EQUINOX = 2000 / Equinox
CRVAL1 = 9.7661839139E+01 / CRVAL1
CRVAL2 = 4.9484481678E+00 / CRVAL1
RADECSYS= 'FK5 ' / RADECSYS
CTYPE1 = 'RA---TAN' / CTYPE1
CTYPE2 = 'DEC--TAN' / CTYPE2
CRPIX1 = 2.5920000000E+03 / CRPIX1
CRPIX2 = 1.7280000000E+03 / CRPIX2
SECPIX1 = 2.6245267436E+00 / SECPIX1
SECPIX2 = 2.6245267436E+00 / SECPIX2
CDELT1 = 7.2903520657E-04 / CDELT1
CDELT2 = 7.2903520657E-04 / CDELT2
CROTA1 = 9.2365500000E+01 / CROTA1
CROTA2 = 9.2365500000E+01 / CROTA2
DATE-OBS= '2021-01-02T21:43:26.826' / UTC start date of observation
COMMENT Generated by INDI
ISOSPEED= 800 / ISO Speed
END
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