RIng nebula (tiny blue dot surrounded by white.)

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

 

Done