Solving fails when I choose auto for Star Database used
Stacking program, astrometric (plate) solver, fits file viewer
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han59
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I have five database options auto D50 D80 G05 W08.
The FITS file has an RA and DEC and other FITS data and it correctly gets the FOV height.
I am currently imaging with a 50mm camera lens but if I set auto for the database options it quickly responds with no solution found. If I choose W08 it solves within a second.
Paul
Hi Paul,
Auto will only work if the image file contains the field-of-view in some way. Like focal length and pixel size. Does the image (FITs file) contains such an information? Raw files will not contain it.
Since you have the D80 you could delete/uninstall the D50.
Han
I think it has enough information to sort ot out but maybe it is looking for a name that does not exist.
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 2 / number of data axes
NAXIS1 = 3326 / length of data axis 1
NAXIS2 = 2504 / 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= 'QSI CCD ' / Camera Name
EXPTIME = 6.000000E+02 / Total Exposure Time (s)
CCD-TEMP= -1.470E+01 / CCD Temperature (Celsius)
PIXSIZE1= 5.400000E+00 / Pixel Size 1 (microns)
PIXSIZE2= 5.400000E+00 / Pixel Size 2 (microns)
XBINNING= 1 / Binning factor in width
YBINNING= 1 / Binning factor in height
XPIXSZ = 5.400000E+00 / X binned pixel size in microns
YPIXSZ = 5.400000E+00 / Y binned pixel size in microns
FRAME = 'Light ' / Frame Type
IMAGETYP= 'Light Frame' / Frame Type
FILTER = 'H ' / Filter
FOCALLEN= 5.000E+01 / Focal Length (mm)
APTDIA = 2.941E+01 / Telescope diameter (mm)
FOCUSPOS= 29995 / Focus position in steps
FOCUSTEM= 1.906E+01 / Focuser temperature in degrees C
SCALE = 2.228040E+01 / arcsecs per pixel
SITELAT = -3.786639E+01 / Latitude of the imaging site in degrees
SITELONG= 1.451331E+02 / Longitude of the imaging site in degrees
AIRMASS = 1.153335E+00 / Airmass
OBJCTAZ = 1.480136E+02 / Azimuth of center of image in Degrees
OBJCTALT= 6.009580E+01 / Altitude of center of image in Degrees
OBJCTRA = '10 45 07.43' / Object J2000 RA in Hours
OBJCTDEC= '-59 51 52.44' / Object J2000 DEC in Degrees
RA = 1.612810E+02 / Object J2000 RA in Degrees
DEC = -5.986457E+01 / Object J2000 DEC in Degrees
PIERSIDE= 'WEST ' / West, looking East
EQUINOX = 2000.0 / Equinox of coordinates
CRVAL1 = 1.612694488386E+002 / RA of reference pixel (deg)
CRVAL2 = -5.990172318607E+001 / DEC of reference pixel (deg)
RADECSYS= 'FK5 ' / RADECSYS
CTYPE1 = 'RA---TAN' / first parameter RA , projection TANgential
CTYPE2 = 'DEC--TAN' / second parameter DEC, projection TANgential
CRPIX1 = 1.663500000000E+003 / X of reference pixel
CRPIX2 = 1.252500000000E+003 / Y of reference pixel
SECPIX1 = 2.2280400393E+01 / SECPIX1
SECPIX2 = 2.2280400393E+01 / SECPIX2
CDELT1 = 5.940055854360E-003 / X pixel size (deg)
CDELT2 = 5.948180150726E-003 / Y pixel size (deg)
CROTA1 = -8.968327823749E+001 / Image twist X axis (deg)
CROTA2 = -8.967336323931E+001 / Image twist Y axis (deg) E of N if not flipped.
DATE-OBS= '2024-01-05T15:48:42.840' / UTC start date of observation
COMMENT Generated by INDI
EPERADU = 5.000E-01 / Electrons per ADU
OBJECT = 'NGC 3372' / Object
OBSERVER= 'Paul Homer' / Observer
TELESCOP= 'Pentax SMC Pentax-M 50@F\1.7' / Telescope
PLTSOLVD= F / No plate solution found.
CUNIT1 = 'deg ' / Unit of coordinates
CD1_1 = 3.283549668436E-005 / CD matrix to convert (x,y) to (Ra, Dec)
CD1_2 = 5.939965099483E-003 / CD matrix to convert (x,y) to (Ra, Dec)
CD2_1 = -5.948083492728E-003 / CD matrix to convert (x,y) to (Ra, Dec)
CD2_2 = 3.390971881165E-005 / CD matrix to convert (x,y) to (Ra, Dec)
END
Paul
All the information is in the header:
SCALE = 2.228040E+01 / arcsecs per pixel
SECPIX1 = 2.2280400393E+01 / SECPIX1
SECPIX2 = 2.2280400393E+01 / SECPIX2
So this give a FOV of 15.6 degrees. The W08 is selected automatic if the FOV is larger then 20 degrees. So it will select the G05. What is the FOV after the solution. The 15.6 degrees height or different?
Han
Han,
If I set FOV and Star Database used to auto it does not solve, but the FOV is set to 14.89.
If I select G05 it does not solve but W08 solves in 0.6 seconds.
So, going by what you are saying the issue is that it automatically selects G05 but does not solve with it.
Paul
Yes that is what is happening. But typically it should work better with the G05 for this field-of-view. Can you share this image so I can have a look?
Han,
Were you able to access the file with the link I sent?
Paul
Hi Paul,
I haven't seen a link. Can you send it again?