Seestar resultaten

Geplaatst op door

De vol automatische telescopen zijn telkens een interessante punt van discussie tijdens de vergaderingen. Is visueel observeren nog niet altijd sneller en makkelijker? Is de kwaliteit van die automatische systemen niet te slecht waardoor je mensen gaat ontgoochelen? Is zo’n automatische telescoop geen speelgoed?

Daarom heb ik mezelf opgelegd om op mijn blog de resultaten van de Seestar S50 te publiceren. Als astrofotograaf is de Seestar voor mij een aanvulling van mijn vaste fotografische installatie en het visueel observeren. Geen vervanger.

Enkele specs van de Seestar S50
– Triplet 50mm lens, f5 (of 250mm focal length)
– CCD IMX462 (1080×1920)
– interne dauwlint
– interne autostacking
– ingebouwde duo-band filter (OIII 30 nm, Ha 20nm)
– Externe zonnefilter (bandpass 580-630nm)
– 2.5kg met bluetooth/WiFi
– interne schijf van 64GB
– eigen batterij

SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 3 / number of data axes NAXIS1 = 983 / length of data axis 1 NAXIS2 = 916 / 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 DATE = '2024-03-18T23:05:51' / UTC date that FITS file was created DATE-OBS= '2024-03-18T21:35:24.514086' / YYYY-MM-DDThh:mm:ss observation start, INSTRUME= 'Seestar S50' / instrument name OBSERVER= ' ' / observer name TELESCOP= 'Seestar S50' / telescope used to acquire this image XPIXSZ = 2.9 / X pixel size microns YPIXSZ = 2.9 / Y pixel size microns XBINNING= 1 / Camera binning mode YBINNING= 1 / Camera binning mode FOCALLEN= 250 / Camera focal length CCD-TEMP= 21.3125 / CCD temp in C EXPTIME = 20 / Exposure time [s] STACKCNT= 108 / Stack frames LIVETIME= 2160 / Exposure time after deadtime correction EXPSTART= 2.46039e+06 / Exposure start time (standard Julian date) EXPEND = 2.46039e+06 / Exposure end time (standard Julian date) FILTER = 'IRCUT ' / Active filter name IMAGETYP= 'Light ' / Type of image OBJECT = 'M 108 ' / Name of the object of interest GAIN = 80 / Camera gain SITELAT = 50.8308 / [deg] Observation site latitude SITELONG= 4.83639 / [deg] Observation site longitude RA = 168.246 / Image center Right Ascension (deg) DEC = 55.5478 / Image center Declination (deg) HISTORY mean stacking with winsorized sigma clipping rejection (low=3.000 high=3 HISTORY .000), additive+scaling normalized input, normalized output, no image we HISTORY ighting, unequalized RGB HISTORY Crop (x=59, y=467, w=983, h=916) HISTORY Background neutralization HISTORY GHS pivot: 0.003, amount: 13.55, local: 15.00 [0.00 1.00] HISTORY GHS pivot: 0.151, amount: 14.50, local: 0.00 [0.00 1.00] HISTORY GHS LINEAR BP: 0.08 HISTORY SCNR (type=average neutral, amount=1.00, preserve=true) END
SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 3 / number of data axes NAXIS1 = 1119 / length of data axis 1 NAXIS2 = 724 / 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 MIPS-FHI= 1 / Upper visualization cutoff MIPS-FLO= 0 / Lower visualization cutoff BZERO = 0 / offset data range to that of unsigned short BSCALE = 1 / default scaling factor DATE = '2024-05-11T21:11:26' / UTC date that FITS file was created INSTRUME= ' ' / instrument name OBSERVER= ' ' / observer name TELESCOP= ' ' / telescope used to acquire this image ROWORDER= 'TOP-DOWN' / Order of the rows in image array XPIXSZ = 2.9 / X pixel size microns YPIXSZ = 2.9 / Y pixel size microns XBINNING= 1 / Camera binning mode YBINNING= 1 / Camera binning mode FOCALLEN= 252.061 / Camera focal length CCD-TEMP= 0 / CCD temp in C SET-TEMP= 0 / Temperature setting in C EXPTIME = 10 / Exposure time [s] STACKCNT= 360 / Stack frames LIVETIME= 7200 / Exposure time after deadtime correction EXPEND = 2.46044e+06 / Exposure end time (standard Julian date) FILTER = 'mixed ' / Active filter name CTYPE1 = 'RA---TAN' / Coordinate type for the first axis CTYPE2 = 'DEC--TAN' / Coordinate type for the second axis CUNIT1 = 'deg ' / Unit of coordinates CUNIT2 = 'deg ' / Unit of coordinates EQUINOX = 2000 / Equatorial equinox OBJCTRA = '09 55 46.896' / Image center Right Ascension (hms) OBJCTDEC= '+69 06 10.570' / Image center Declination (dms) RA = 148.945 / Image center Right Ascension (deg) DEC = 69.1029 / Image center Declination (deg) CRPIX1 = 607.5 / Axis1 reference pixel CRPIX2 = 331.5 / Axis2 reference pixel CRVAL1 = 148.945 / Axis1 reference value (deg) CRVAL2 = 69.1029 / Axis2 reference value (deg) CDELT1 = -0.000659194 / X pixel size (deg) CDELT2 = 0.000659199 / Y pixel size (deg) PC1_1 = -0.917949 / Linear transformation matrix (1, 1) PC1_2 = 0.396882 / Linear transformation matrix (1, 2) PC2_1 = -0.396695 / Linear transformation matrix (2, 1) PC2_2 = -0.917871 / Linear transformation matrix (2, 2) PLTSOLVD= T / Siril internal solve END
IC342
SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 3 / number of data axes NAXIS1 = 1858 / length of data axis 1 NAXIS2 = 1005 / 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 MIPS-FHI= 1 / Upper visualization cutoff MIPS-FLO= 0 / Lower visualization cutoff BZERO = 0 / offset data range to that of unsigned short BSCALE = 1 / default scaling factor DATE = '2024-06-03T21:36:17' / UTC date that FITS file was created DATE-OBS= '2024-03-24T19:42:24.784409' / YYYY-MM-DDThh:mm:ss observation start, INSTRUME= 'Seestar S50' / instrument name OBSERVER= ' ' / observer name TELESCOP= 'Seestar S50' / telescope used to acquire this image XPIXSZ = 2.9 / X pixel size microns YPIXSZ = 2.9 / Y pixel size microns XBINNING= 1 / Camera binning mode YBINNING= 1 / Camera binning mode FOCALLEN= 250 / Camera focal length CCD-TEMP= 19.5625 / CCD temp in C EXPTIME = 10 / Exposure time [s] STACKCNT= 252 / Stack frames LIVETIME= 2520 / Exposure time after deadtime correction EXPSTART= 2.46039e+06 / Exposure start time (standard Julian date) EXPEND = 2.46039e+06 / Exposure end time (standard Julian date) FILTER = 'IRCUT ' / Active filter name IMAGETYP= 'Light ' / Type of image OBJECT = 'IC 434 ' / Name of the object of interest GAIN = 80 / Camera gain SITELAT = 50.8378 / [deg] Observation site latitude SITELONG= 4.845 / [deg] Observation site longitude RA = 85.6625 / Image center Right Ascension (deg) DEC = -2.22889 / Image center Declination (deg) HISTORY mean stacking with winsorized sigma clipping rejection (low=3.000 high=3 HISTORY .000), additive+scaling normalized input, normalized output, no image we HISTORY ighting, unequalized RGB HISTORY Crop (x=24, y=34, w=1858, h=1005) HISTORY Rotation (90 deg) HISTORY Rotation (90 deg) HISTORY Rotation (90 deg) HISTORY GHS pivot: 0.004, amount: 13.86, local: 15.00 [0.00 1.00] HISTORY GHS pivot: 0.066, amount: 5.71, local: 0.00 [0.00 1.00] HISTORY GHS LINEAR BP: 0.12 HISTORY GHS pivot: 0.207, amount: 8.58, local: 0.00 [0.00 1.00] HISTORY GHS LINEAR BP: 0.28 HISTORY GHS LINEAR BP: 0.14 HISTORY GHS LINEAR BP: 0.08 HISTORY Saturation enhancement (amount=0.53) HISTORY SCNR (type=average neutral, amount=1.00, preserve=true) HISTORY SCNR (type=average neutral, amount=1.00, preserve=true) END
Diavoorstelling
Geplaatst in Geen categorie (hoofdpagina), HenkUyttenhove.