View allAll Photos Tagged polynomials
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 1920 / length of data axis 1
NAXIS2 = 1080 / length of data axis 2
NAXIS3 = 3 / length of data axis 3
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 = 0. / Offset data range to that of unsigned short
BSCALE = 1. / Default scaling factor
PROGRAM = 'Siril 1.4.0-beta2' / Software that created this HDU
DATE = '2025-05-25T04:36:06' / UTC date that FITS file was created
DATE-OBS= '2025-05-24T06:42:54.562902' / YYYY-MM-DDThh🇲🇲ss observation start,
IMAGETYP= 'Light ' / Type of image
EXPTIME = 10. / [s] Exposure time duration
TELESCOP= 'S50_f1c10930' / Telescope used to acquire this image
FILTER = 'LP_Starless' / Active filter name
APERTURE= 5. / Aperture of the instrument
FOCALLEN= 250. / [mm] Focal length
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
XPIXSZ = 2.90000009536743 / [um] Pixel X axis size
YPIXSZ = 2.90000009536743 / [um] Pixel Y axis size
INSTRUME= 'Seestar S50' / Instrument name
CCD-TEMP= 16.5 / [degC] CCD temperature
GAIN = 80 / Sensor gain
BAYERPAT= 'GRBG ' / Bayer color pattern
FOCPOS = 1587 / [step] Focuser position
STACKCNT= 193 / Stack frames
OBJECT = 'M 57 ' / Name of the object of interest
SITELAT = 41.7559 / [deg] Observation site latitude
SITELONG= -88.1817 / [deg] Observation site longitude
OBJCTRA = '18 53 41.708' / [H M S] Image center Right Ascension
OBJCTDEC= '+32 59 57.534' / [D M S] Image center Declination
RA = 283.423783955069 / [deg] Image center Right Ascension
DEC = 32.999314905147 / [deg] Image center Declination
CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions
CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions
CUNIT1 = 'deg ' / Unit of coordinates
CUNIT2 = 'deg ' / Unit of coordinates
EQUINOX = 9.87654321E+107 / Equatorial equinox
CRPIX1 = 1027.74934387 / Axis1 reference pixel
CRPIX2 = 638.474120617 / Axis2 reference pixel
CRVAL1 = 283.5005666 / [deg] Axis1 reference value
CRVAL2 = 32.9546001127 / [deg] Axis2 reference value
LONPOLE = 180. / Native longitude of celestial pole
CDELT1 = -0.000659799075280385 / [deg] X pixel size
CDELT2 = 0.000659608978753408 / [deg] Y pixel size
PC1_1 = 0.00518729418360521 / Linear transformation matrix (1, 1)
PC1_2 = -0.99998654589902 / Linear transformation matrix (1, 2)
PC2_1 = -0.999981686632843 / Linear transformation matrix (2, 1)
PC2_2 = -0.00605197479621091 / Linear transformation matrix (2, 2)
A_ORDER = 2 / SIP polynomial degree, axis 1, pixel-to-sky
A_0_0 = 0.
A_1_0 = 0.
A_0_1 = 0.
A_2_0 = 2.86109521904E-07
A_1_1 = -1.29394838394E-06
A_0_2 = 2.3587804816E-06
B_ORDER = 2 / SIP polynomial degree, axis 2, pixel-to-sky
B_0_0 = 0.
B_1_0 = 0.
B_0_1 = 0.
B_2_0 = 9.35141297562001E-08
B_1_1 = -9.84136886845E-07
B_0_2 = 3.21558028496E-06
AP_ORDER= 2 / SIP polynomial degree, axis 1, sky-to-pixel
AP_0_0 = 0.000192584989749
AP_1_0 = -5.29841367311E-07
AP_0_1 = 2.19440235099E-06
AP_2_0 = -2.86178110142E-07
AP_1_1 = 1.29499382405E-06
AP_0_2 = -2.36192723025E-06
BP_ORDER= 2 / SIP polynomial degree, axis 2, sky-to-pixel
BP_0_0 = 0.000298064397267
BP_1_0 = -7.71663053267E-07
BP_0_1 = 3.35419644196E-06
BP_2_0 = -9.36096853414001E-08
BP_1_1 = 9.85512218419001E-07
BP_0_2 = -3.22041417503E-06
HISTORY Saturation enhancement (amount=0.31)
HISTORY Saturation enhancement (amount=0.43)
HISTORY Rotation (90 deg)
CREATOR = 'ZWO Seestar S50' / Capture software
PRODUCER= 'ZWO ' / Powered by ZWO
XORGSUBF= 0 / Subframe X position in binned pixels
YORGSUBF= 0 / Subframe Y position in binned pixels
EQMODE = 1 / Equatorial mode
CCDXBIN = 1 / Camera X Bin
CCDYBIN = 1 / Camera Y Bin
TOTALEXP= 1930. / Total Exposure Time in seconds
IMAGEW = 1080 / Image width, in pixels.
IMAGEH = 1920 / Image height, in pixels.
BG-EXTR = 'GraXpert'
CBG-1 = 0.011884219
CBG-2 = 0.011884219
CBG-3 = 0.011884219
INTP-OPT= 'RBF '
HIERARCH SMOOTHING = 0.9
HIERARCH CORR-TYPE = 'Subtraction'
HIERARCH SAMPLE-SIZE = 15
HIERARCH RBF-KERNEL = 'thin_plate'
HIERARCH SPLINE-ORDER = 3
BG-PTS = '[[555, 9, 1], [627, 9, 1], [699, 9, 1], [741, 9, 1], [813, 9, 1], &'
CONTINUE '[411, 111, 1], [555, 111, 1], [627, 111, 1], [699, 111, 1], [771, &'
CONTINUE '111, 1], [813, 111, 1], [885, 111, 1], [339, 183, 1], [381, 183, &'
CONTINUE '1], [453, 183, 1], [525, 183, 1], [597, 183, 1], [699, 183, 1], &'
CONTINUE '[771, 183, 1], [843, 153, 1], [885, 183, 1], [987, 183, 1], [1029, &'
CONTINUE '183, 1], [267, 255, 1], [339, 255, 1], [396, 240, 1], [453, 255, &'
CONTINUE '1], [525, 255, 1], [597, 255, 1], [699, 255, 1], [771, 225, 1], &'
CONTINUE '[828, 240, 1], [885, 255, 1], [987, 255, 1], [1044, 240, 1], [195, &'
CONTINUE '297, 1], [267, 327, 1], [324, 312, 1], [396, 312, 1], [453, 327, &'
CONTINUE '1], [540, 312, 1], [597, 297, 1], [699, 327, 1], [771, 297, 1], &'
CONTINUE '[843, 297, 1], [915, 327, 1], [972, 312, 1], [1029, 327, 1], [195, &'
CONTINUE '399, 1], [237, 399, 1], [309, 369, 1], [381, 399, 1], [453, 399, &'
CONTINUE '1], [555, 369, 1], [597, 399, 1], [699, 369, 1], [756, 384, 1], &'
CONTINUE '[843, 399, 1], [915, 399, 1], [987, 369, 1], [1059, 399, 1], [21, &'
CONTINUE '471, 1], [108, 456, 1], [195, 471, 1], [267, 471, 1], [339, 471, &'
CONTINUE '1], [381, 471, 1], [483, 441, 1], [525, 471, 1], [627, 441, 1], &'
CONTINUE '[699, 471, 1], [771, 471, 1], [813, 441, 1], [915, 471, 1], [987, &'
CONTINUE '441, 1], [1029, 471, 1], [21, 543, 1], [93, 543, 1], [195, 543, &'
CONTINUE '1], [237, 543, 1], [339, 543, 1], [381, 543, 1], [453, 543, 1], &'
CONTINUE '[555, 543, 1], [627, 543, 1], [699, 543, 1], [741, 543, 1], [843, &'
CONTINUE '513, 1], [915, 513, 1], [957, 543, 1], [1059, 543, 1], [51, 615, &'
CONTINUE '1], [123, 615, 1], [165, 585, 1], [237, 585, 1], [324, 600, 1], &'
CONTINUE '[381, 615, 1], [453, 615, 1], [555, 615, 1], [597, 615, 1], [699, &'
CONTINUE '615, 1], [771, 615, 1], [843, 615, 1], [915, 585, 1], [987, 615, &'
CONTINUE '1], [1059, 615, 1], [51, 687, 1], [93, 687, 1], [195, 687, 1], &'
CONTINUE '[267, 687, 1], [309, 657, 1], [396, 672, 1], [453, 657, 1], [525, &'
CONTINUE '687, 1], [597, 657, 1], [699, 687, 1], [771, 657, 1], [843, 687, &'
CONTINUE '1], [779.7394136807818, 704.6254071661238, 1.0], [987, 657, 1], &'
CONTINUE '[1029, 687, 1], [21, 729, 1], [123, 759, 1], [180, 744, 1], [267, &'
CONTINUE '759, 1], [324, 744, 1], [396, 744, 1], [453, 729, 1], [525, 759, &'
CONTINUE '1], [627, 729, 1], [699, 729, 1], [771, 759, 1], [843, 729, 1], &'
CONTINUE '[855.830618892508, 766.1237785016286, 1.0], [972, 744, 1], [1029, &'
CONTINUE '759, 1], [51, 831, 1], [123, 831, 1], [165, 831, 1], [267, 831, &'
CONTINUE '1], [309, 801, 1], [396, 816, 1], [453, 801, 1], [555, 801, 1], &'
CONTINUE '[627, 801, 1], [684, 816, 1], [741, 801, 1], [813, 831, 1], [915, &'
CONTINUE '801, 1], [987, 831, 1], [1059, 801, 1], [51, 873, 1], [123, 873, &'
CONTINUE '1], [195, 873, 1], [267, 873, 1], [309, 873, 1], [381, 873, 1], &'
CONTINUE '[483, 873, 1], [525, 873, 1], [597, 873, 1], [699, 903, 1], [771, &'
CONTINUE '903, 1], [813, 903, 1], [915, 873, 1], [972, 888, 1], [1059, 903, &'
CONTINUE '1], [51, 945, 1], [123, 945, 1], [165, 945, 1], [252, 960, 1], &'
CONTINUE '[309, 945, 1], [381, 945, 1], [453, 945, 1], [699, 975, 1], [771, &'
CONTINUE '945, 1], [843, 975, 1], [885, 975, 1], [972, 960, 1], [1059, 975, &'
CONTINUE '1], [51, 1047, 1], [123, 1017, 1], [165, 1017, 1], [237, 1047, 1], &'
CONTINUE '[309, 1017, 1], [381, 1047, 1], [483, 1047, 1], [627, 1047, 1], &'
CONTINUE '[699, 1017, 1], [771, 1047, 1], [813, 1017, 1], [885, 1017, 1], &'
CONTINUE '[972, 1032, 1], [1029, 1017, 1], [51, 1119, 1], [123, 1089, 1], &'
CONTINUE '[165, 1119, 1], [252, 1104, 1], [309, 1089, 1], [396, 1104, 1], &'
CONTINUE '[453, 1119, 1], [525, 1089, 1], [627, 1119, 1], [699, 1119, 1], &'
CONTINUE '[741, 1089, 1], [843, 1089, 1], [885, 1089, 1], [957, 1119, 1], &'
CONTINUE '[1029, 1119, 1], [51, 1161, 1], [123, 1191, 1], [165, 1191, 1], &'
CONTINUE '[267, 1191, 1], [309, 1161, 1], [381, 1191, 1], [453, 1161, 1], &'
CONTINUE '[525, 1161, 1], [627, 1191, 1], [699, 1161, 1], [741, 1161, 1], &'
CONTINUE '[813, 1161, 1], [885, 1161, 1], [972, 1176, 1], [1029, 1191, 1], &'
CONTINUE '[51, 1233, 1], [108, 1248, 1], [195, 1233, 1], [267, 1233, 1], &'
CONTINUE '[339, 1233, 1], [396, 1248, 1], [453, 1233, 1], [525, 1233, 1], &'
CONTINUE '[627, 1233, 1], [699, 1233, 1], [771, 1263, 1], [813, 1233, 1], &'
CONTINUE '[915, 1233, 1], [957, 1233, 1], [1029, 1263, 1], [51, 1335, 1], &'
CONTINUE '[108, 1320, 1], [195, 1305, 1], [237, 1305, 1], [324, 1320, 1], &'
CONTINUE '[381, 1335, 1], [483, 1335, 1], [540, 1320, 1], [627, 1305, 1], &'
CONTINUE '[699, 1305, 1], [771, 1335, 1], [813, 1335, 1], [915, 1335, 1], &'
CONTINUE '[957, 1335, 1], [1059, 1335, 1], [36, 1392, 1], [93, 1377, 1], &'
CONTINUE '[165, 1377, 1], [267, 1377, 1], [309, 1377, 1], [381, 1407, 1], &'
CONTINUE '[483, 1407, 1], [555, 1407, 1], [627, 1407, 1], [699, 1377, 1], &'
CONTINUE '[741, 1407, 1], [813, 1407, 1], [885, 1407, 1], [987, 1407, 1], &'
CONTINUE '[1029, 1407, 1], [51, 1449, 1], [93, 1449, 1], [267, 1449, 1], &'
CONTINUE '[309, 1449, 1], [411, 1479, 1], [483, 1449, 1], [555, 1479, 1], &'
CONTINUE '[627, 1479, 1], [699, 1479, 1], [771, 1479, 1], [843, 1479, 1], &'
CONTINUE '[915, 1479, 1], [987, 1479, 1], [1059, 1449, 1], [36, 1536, 1], &'
CONTINUE '[93, 1521, 1], [165, 1551, 1], [237, 1551, 1], [339, 1521, 1], &'
CONTINUE '[381, 1551, 1], [483, 1521, 1], [555, 1521, 1], [627, 1521, 1], &'
CONTINUE '[684, 1536, 1], [771, 1551, 1], [843, 1551, 1], [885, 1521, 1], &'
CONTINUE '[987, 1551, 1], [1029, 1521, 1], [51, 1623, 1], [93, 1593, 1], &'
CONTINUE '[195, 1593, 1], [237, 1623, 1], [309, 1623, 1], [411, 1623, 1], &'
CONTINUE '[453, 1623, 1], [525, 1623, 1], [627, 1623, 1], [699, 1623, 1], &'
CONTINUE '[771, 1623, 1], [843, 1593, 1], [915, 1623, 1], [987, 1623, 1], &'
CONTINUE '[1029, 1593, 1], [51, 1695, 1], [123, 1665, 1], [195, 1665, 1], &'
CONTINUE '[267, 1665, 1], [339, 1695, 1], [411, 1695, 1], [483, 1695, 1], &'
CONTINUE '[555, 1695, 1], [627, 1695, 1], [699, 1665, 1], [771, 1695, 1], &'
CONTINUE '[843, 1695, 1], [915, 1695, 1], [987, 1695, 1], [1029, 1695, 1], &'
CONTINUE '[21, 1767, 1], [108, 1752, 1], [165, 1767, 1], [267, 1767, 1], &'
CONTINUE '[309, 1767, 1], [396, 1752, 1], [483, 1737, 1], [555, 1767, 1], &'
CONTINUE '[627, 1767, 1], [699, 1767, 1], [771, 1767, 1], [843, 1767, 1], &'
CONTINUE '[915, 1767, 1], [987, 1767, 1], [1029, 1767, 1], [21, 1839, 1], &'
CONTINUE '[93, 1839, 1], [165, 1839, 1], [252, 1824, 1], [339, 1809, 1], &'
CONTINUE '[411, 1839, 1], [483, 1839, 1], [555, 1839, 1], [627, 1809, 1], &'
CONTINUE '[699, 1809, 1], [771, 1839, 1], [843, 1809, 1], [915, 1839, 1], &'
CONTINUE '[987, 1839, 1], [1059, 1839, 1], [21, 1911, 1], [93, 1881, 1], &'
CONTINUE '[165, 1911, 1], [267, 1881, 1], [309, 1881, 1], [411, 1881, 1], &'
CONTINUE '[483, 1881, 1], [555, 1881, 1], [627, 1881, 1], [699, 1911, 1], &'
CONTINUE '[771, 1911, 1], [843, 1911, 1], [915, 1911, 1], [987, 1911, 1], &'
CONTINUE '[1059, 1911, 1], [32, 322, 1], [51, 339, 1], [123, 309, 1], [36, &'
CONTINUE '396, 1], [123, 411, 1], [123, 267, 1], [53, 93, 1], [93, 51, 1], &'
CONTINUE '[180, 36, 1], [51, 93, 1], [108, 108, 1], [195, 123, 1], [21, 165, &'
CONTINUE '1], [123, 165, 1], [74, 290, 1], [51, 267, 1], [214, 202, 1], &'
CONTINUE '[267, 195, 1], [321, 48, 1], [309, 51, 1], [411, 51, 1], [483, 51, &'
CONTINUE '1], [267, 93, 1], [917, 48, 1], [885, 51, 1], [987, 21, 1], [1044, &'
CONTINUE '36, 1], [1029, 123, 1], [926, 106, 1], [927, 213, 1], [741, 339, &'
CONTINUE '1], [456, 1570, 1], [339, 1563, 1], [195, 1491, 1], [237, 1491, &'
CONTINUE '1], [495, 1570, 1], [568, 1559, 1]]'
END
Draw a similar shape, where the radius R, the distance α and the angle ω with ω>0° have random values.
The consequences are
1. x1 + x2 + x3 + x4 = 0
Of course, the values ​​of the points x are the roots of a reduced quartic equation. Then
2. The radius R is calculated by the coefficients of this equation, while it is the only radius for which the rectangularity of the lines of the figure applies.
This is part of the geometric interpretation of the quartic equation that leads to multiple analytical solutions.
Can this work for higher degree equations?
The following result shows whether it would be possible for such an equation (with degree n) to have a similar model with parameters R, α, ω (where the angles formed by the lines at point 0,0 are equal to 360°/n each).
If R,α and n have constant values with R>|α|>=0 and n>2, then for every angle ω will be valid
x1+x2+x3+...+xn=δcos(nω)
where δ is a constant. Therefore δ will be equal to the sum of the roots for ω=0°. When n is an odd number it will be δ=0 only if α=0, while when n is an even number it will always be δ=0 due to the symetry that these systems have with respect to the y-axis for ω=0°.
So the indications are encouraging for equations that have an even degree, but the problem remains open.
"The single biggest problem we face is that of visualisation", Richard Neiman.
THese were gonna be a MOVIE! Polynomial Lost on Algebra Island wiht her sister Leucine and bro Tryptophan. I let Luci got o family and Luci gave a litter of hte best pups (Rubisco and Kinase) and Tryp was Tryp! (In middle)
Isaac Newton -I have a fundamental belief in the Bible as the Word of God, written by those who were inspired. I study the Bible daily. -Mathematician, Astronomer and Physicist
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 5444 / length of data axis 1
NAXIS2 = 3803 / length of data axis 2
NAXIS3 = 3 / length of data axis 3
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 = 0. / Offset data range to that of unsigned short
BSCALE = 1. / Default scaling factor
PROGRAM = 'Siril 1.4.0-beta4' / Software that created this HDU
DATE = '2025-10-06T12:04:35' / UTC date that FITS file was created
DATE-OBS= '2025-10-06T10:09:06.886626' / YYYY-MM-DDThh🇲🇲ss observation start,
ROWORDER= 'TOP-DOWN' / Order of the rows in image array
EXPTIME = 836.25 / [s] Exposure time duration
OBSERVER= 'DaveMartin' / Observer name
FILTER = 'Dual ' / Active filter name
FOCALLEN= 956.82 / [mm] Focal length
CENTALT = 43.875 / [deg] Altitude of telescope
CENTAZ = 197.023888888889 / [deg] Azimuth of telescope
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
XPIXSZ = 3.76 / [um] Pixel X axis size
YPIXSZ = 3.76 / [um] Pixel Y axis size
INSTRUME= 'ZWO ASI2600MC Pro' / Instrument name
CCD-TEMP= 0. / [degC] CCD temperature
SET-TEMP= 0. / [degC] CCD temperature setpoint
GAIN = 100 / Sensor gain
OFFSET = 12 / Sensor gain offset
CVF = 0.2636 / [e-/ADU] Electrons per A/D unit
FOCPOS = 19865 / [step] Focuser position
FOCTEMP = 8.30000019073486 / [degC] Focuser temperature
OBJECT = 'NGC1976 (M42, Great Orion Nebula, Orion Nebula)' / Name of the object
AIRMASS = 1.44068164488539 / Airmass at frame center (Gueymard 1993)
SITELAT = 39.3488888888889 / [deg] Observation site latitude
SITELONG= -78.8116666666667 / [deg] Observation site longitude
OBJCTRA = '05 35 15.799' / [H M S] Image center Right Ascension
OBJCTDEC= '-05 22 47.677' / [D M S] Image center Declination
RA = 83.8158281898562 / [deg] Image center Right Ascension
DEC = -5.37991021764815 / [deg] Image center Declination
CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions
CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions
CUNIT1 = 'deg ' / Unit of coordinates
CUNIT2 = 'deg ' / Unit of coordinates
EQUINOX = 2000. / Equatorial equinox
CRPIX1 = 2693.5 / Axis1 reference pixel
CRPIX2 = 1938.5 / Axis2 reference pixel
CRVAL1 = 83.8212837066781 / [deg] Axis1 reference value
CRVAL2 = -5.38889204929805 / [deg] Axis2 reference value
LONPOLE = 180. / Native longitude of celestial pole
CDELT1 = -0.000225139323345704 / [deg] X pixel size
CDELT2 = 0.000225169400022428 / [deg] Y pixel size
PC1_1 = -0.348038991134063 / Linear transformation matrix (1, 1)
PC1_2 = -0.937480058801457 / Linear transformation matrix (1, 2)
PC2_1 = 0.937494027453252 / Linear transformation matrix (2, 1)
PC2_2 = -0.348001362769574 / Linear transformation matrix (2, 2)
A_ORDER = 3 / SIP polynomial degree, axis 1, pixel-to-sky
A_0_0 = 0.
A_1_0 = 0.
A_0_1 = 0.
A_2_0 = -1.64277020685452E-07
A_1_1 = 9.87549346279314E-09
A_0_2 = -8.69160424952199E-08
A_3_0 = -3.02073434291275E-10
A_2_1 = 5.06449749491843E-12
A_1_2 = -3.06521889392484E-10
A_0_3 = -7.11631122483371E-12
B_ORDER = 3 / SIP polynomial degree, axis 2, pixel-to-sky
B_0_0 = 0.
B_1_0 = 0.
B_0_1 = 0.
B_2_0 = -1.28288782073535E-08
B_1_1 = -5.68511798589425E-08
B_0_2 = -5.88039813473346E-08
B_3_0 = 2.51466443610045E-12
B_2_1 = -3.03411808507867E-10
B_1_2 = 1.88074302834745E-11
B_0_3 = -3.02158975629337E-10
AP_ORDER= 3 / SIP polynomial degree, axis 1, sky-to-pixel
AP_0_0 = -0.00282500133597869
AP_1_0 = -1.43205078008135E-05
AP_0_1 = 6.69821284630872E-07
AP_2_0 = 1.66963688254827E-07
AP_1_1 = -1.00792430236529E-08
AP_0_2 = 8.76805314355769E-08
AP_3_0 = 3.06432679354613E-10
AP_2_1 = -5.24743960913225E-12
AP_1_2 = 3.1135956544913E-10
AP_0_3 = 6.95417774079078E-12
BP_ORDER= 3 / SIP polynomial degree, axis 2, sky-to-pixel
BP_0_0 = -0.000587530962498615
BP_1_0 = 6.73660948648711E-07
BP_0_1 = -1.0370590796116E-05
BP_2_0 = 1.30208895607198E-08
BP_1_1 = 5.76814378001768E-08
BP_0_2 = 5.93230277432801E-08
BP_3_0 = -2.60709033909064E-12
BP_2_1 = 3.07758434362221E-10
BP_1_2 = -1.92588333919524E-11
BP_0_3 = 3.05579270177439E-10
PLTSOLVD= T / Siril internal solver
HISTORY Plate Solve
HISTORY Crop (x=431, y=223, w=5444, h=3803)
HISTORY Background extraction (Correction: Subtraction)
HISTORY StatStretch: m=0.20 l=True n=True c=True b=0.00
HISTORY GraXpert AI BGE: subtraction
HISTORY GraXpert AI denoise: strength 0.50
HISTORY GraXpert AI deconvolve: strength 0.50
HISTORY GraXpert AI deconvolve: strength 0.50
HISTORY GHS LINEAR BP: 0.08
HISTORY GHS pivot: 0.138, amount: 1.25, local: 0.00 [0.00 1.00]
HISTORY GHS LINEAR BP: 0.06
HISTORY GHS INV pivot: 0.116, amount: 0.82, local: 0.00 [0.00 1.00]
HISTORY Apply Signature
HISTORY GHS pivot: 0.179, amount: 2.38, local: 0.00 [0.00 1.00]
HISTORY GHS LINEAR BP: 0.03
HISTORY HDR Multiscale: 7 scales
HISTORY HDR Multiscale: 7 scales
ADCBITS = 16 / Bit depth of camera sensor ADC in current mode
BIASADU = 121.16593933105469 / ADU for bias level (no photons) at current sett
CAMID = '1E1E560D0B020900' /
COLORTYP= 'RGB' /
DATE-AVG= '2025-10-06T10:24:13.1694766' / System Clock:Est. Frame Mid Point
DATE-END= '2025-10-06T10:39:19.4523264' / System Clock:Est. Frame End
EGAINSAV= 0.26355 / Electrons per ADU at saved bit depth
JD_UTC = 2460954.933485758 / Julian Date at mid exposure
PIERSIDE= 'EAST' /
RDNOISE = 1.77 / Read noise in electrons
RELGAIN = 2.964 / Multiplicative gain relative to minumum
SUBEXP = 3.75 /
END
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 5007 / length of data axis 1
NAXIS2 = 3313 / length of data axis 2
NAXIS3 = 3 / length of data axis 3
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 = 0. / Offset data range to that of unsigned short
BSCALE = 1. / Default scaling factor
MIPS-HI = 65535 / Lower visualization cutoff
PROGRAM = 'Siril 1.4.0-beta3' / Software that created this HDU
DATE = '2025-09-05T17:06:14' / UTC date that FITS file was created
DATE-OBS= '2025-09-03T07:47:09.267542' / YYYY-MM-DDThh🇲🇲ss observation start,
ROWORDER= 'TOP-DOWN' / Order of the rows in image array
EXPTIME = 1830. / [s] Exposure time duration
OBSERVER= 'DaveMartin' / Observer name
FILTER = 'mixed ' / Active filter name
FOCALLEN= 350.23 / [mm] Focal length
CENTALT = 24.0991666666667 / [deg] Altitude of telescope
CENTAZ = 115.277222222222 / [deg] Azimuth of telescope
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
XPIXSZ = 3.76 / [um] Pixel X axis size
YPIXSZ = 3.76 / [um] Pixel Y axis size
INSTRUME= 'ZWO ASI2600MC Pro' / Instrument name
CCD-TEMP= 0. / [degC] CCD temperature
SET-TEMP= 0. / [degC] CCD temperature setpoint
GAIN = 100 / Sensor gain
OFFSET = 12 / Sensor gain offset
CVF = 0.2636 / [e-/ADU] Electrons per A/D unit
FOCPOS = 33201 / [step] Focuser position
FOCTEMP = 9.84000015258789 / [degC] Focuser temperature
STACKCNT= 2 / Stack frames
LIVETIME= 3660. / [s] Exposure time after deadtime correction
OBJECT = 'IC0434 (Horsehead Nebula, Orion B)' / Name of the object of interest
AIRMASS = 2.43479916985599 / Airmass at frame center (Gueymard 1993)
SITELAT = 39.3488888888889 / [deg] Observation site latitude
SITELONG= -78.8116666666667 / [deg] Observation site longitude
OBJCTRA = '05 40 31.794' / [H M S] Image center Right Ascension
OBJCTDEC= '-02 24 35.066' / [D M S] Image center Declination
RA = 85.1324766100387 / [deg] Image center Right Ascension
DEC = -2.40974050855275 / [deg] Image center Declination
CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions
CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions
CUNIT1 = 'deg ' / Unit of coordinates
CUNIT2 = 'deg ' / Unit of coordinates
EQUINOX = 2000. / Equatorial equinox
CRPIX1 = 2565.5 / Axis1 reference pixel
CRPIX2 = 1486.5 / Axis2 reference pixel
CRVAL1 = 85.2341341042268 / [deg] Axis1 reference value
CRVAL2 = -2.4558836476365 / [deg] Axis2 reference value
LONPOLE = 180. / Native longitude of celestial pole
CDELT1 = -0.000615265260750159 / [deg] X pixel size
CDELT2 = 0.000614968375501954 / [deg] Y pixel size
PC1_1 = 0.0794083577694203 / Linear transformation matrix (1, 1)
PC1_2 = 0.996842170414336 / Linear transformation matrix (1, 2)
PC2_1 = -0.996753807467596 / Linear transformation matrix (2, 1)
PC2_2 = 0.0805099204995885 / Linear transformation matrix (2, 2)
A_ORDER = 3 / SIP polynomial degree, axis 1, pixel-to-sky
A_0_0 = 0.
A_1_0 = 0.
A_0_1 = 0.
A_2_0 = -3.79677154119047E-08
A_1_1 = 7.38342030330063E-08
A_0_2 = 3.79720296820246E-08
A_3_0 = -4.0324918048076E-11
A_2_1 = -3.29565885448712E-12
A_1_2 = -3.15341842919888E-11
A_0_3 = -5.64825366267551E-12
B_ORDER = 3 / SIP polynomial degree, axis 2, pixel-to-sky
B_0_0 = 0.
B_1_0 = 0.
B_0_1 = 0.
B_2_0 = -2.95818634164737E-08
B_1_1 = -7.01783412603652E-09
B_0_2 = 6.37999469584622E-08
B_3_0 = -1.1830595845234E-12
B_2_1 = -3.6090721607276E-11
B_1_2 = -3.56608103304676E-12
B_0_3 = -3.98995352329986E-11
AP_ORDER= 3 / SIP polynomial degree, axis 1, sky-to-pixel
AP_0_0 = -6.78978013124636E-05
AP_1_0 = -1.98812997398434E-07
AP_0_1 = -1.76803289727692E-08
AP_2_0 = 3.80426138529127E-08
AP_1_1 = -7.39458324637942E-08
AP_0_2 = -3.80036649006719E-08
AP_3_0 = 4.03953162484519E-11
AP_2_1 = 3.29680404894911E-12
AP_1_2 = 3.15972819765301E-11
AP_0_3 = 5.66102140439871E-12
BP_ORDER= 3 / SIP polynomial degree, axis 2, sky-to-pixel
BP_0_0 = -5.9377198142655E-06
BP_1_0 = -2.57587180113559E-08
BP_0_1 = -1.40977118756602E-07
BP_2_0 = 2.96142451666252E-08
BP_1_1 = 7.03465727719834E-09
BP_0_2 = -6.38693631944821E-08
BP_3_0 = 1.18996527009289E-12
BP_2_1 = 3.61456285132576E-11
BP_1_2 = 3.57731662253042E-12
BP_0_3 = 3.99567245871633E-11
SUBEXP = 30 /
CAMID = '1E1E560D0B020900' /
PIERSIDE= 'WEST' /
ADCBITS = 16 / Bit depth of camera sensor ADC in current mode
BIASADU = 121.16593933105469 / ADU for bias level (no photons) at current sett
EGAINSAV= 0.26355 / Electrons per ADU at saved bit depth
RELGAIN = 2.964 / Multiplicative gain relative to minumum
RDNOISE = 1.77 / Read noise in electrons
COLORTYP= 'RGB' /
DATE-END= '2025-09-03T08:23:51.4900595' / System Clock:Est. Frame End
DATE-AVG= '2025-09-03T08:05:30.3788009' / System Clock:Est. Frame Mid Point
JD_UTC = 2460921.837157162 / Julian Date at mid exposure
END
or Eg-No-Ra-Moose?
A Cracker Barrel somewhere in Virginia
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