Bortle 7 skies
Nikon D5600 camera (unmodified)
ISO 200
Astro-Tech AT102ED refractor, 714mm focal length, f/7
HoTech 2" SCA field flattener (1X)
iOptron CEM26 mount
30s x 397 frames (3h 18m)
Processing:
Siril 1.2.6:
Crop to 4000 x 3000px
BQ Octantis' color processing steps (white balance, background subtraction, histogram conditioning)
GraXpert denoising
StarNet++:
- star desaturation
- background: modified asinh stretch, background extraction, saturation
- stars: synthetic blue, modified asinh stretch, saturation
RawTherapee 5.11:
L*a*b* CL curve
Luminance noise reduction
GIMP 2.10:
Luminance curve
Saturation
Image META information
COMPUTED.UserCommentEncoding
UNDEFINED
COMPUTED.Copyright
Siril v1.2.6
IFD0.ICC_Profile
COMMENT.0
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 4000 / length of data axis 1
NAXIS2 = 3000 / 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 = '2025-05-10T00:33:34' / UTC date that FITS file was created
DATE-OBS= '2023-11-06T01:30:43' / YYYY-MM-DDThh:mm:ss observation start, UT
INSTRUME= 'Nikon D5600' / instrument name
OBSERVER= ' ' / observer name
TELESCOP= ' ' / telescope used to acquire this image
ROWORDER= 'BOTTOM-UP' / Order of the rows in image array
XPIXSZ = 3.92 / X pixel size microns
YPIXSZ = 3.92 / Y pixel size microns
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
FOCALLEN= 709.525 / Camera focal length
CCD-TEMP= 0 / CCD temp in C
SET-TEMP= 0 / Temperature setting in C
EXPTIME = 29.9 / Exposure time [s]
STACKCNT= 10719 / Stack frames
LIVETIME= 320471 / Exposure time after deadtime correction
EXPSTART= 2.46025e+06 / Exposure start time (standard Julian date)
EXPEND = 2.46027e+06 / Exposure end time (standard Julian date)
FILTER = 'mixed ' / Active filter name
ISOSPEED= 200 / ISO camera setting
HISTORY RGB alignment (PSF)
END
File Name
gallery_361082_16772_3812304.jpg
Unix Timestamp
1747079481
Original File Size
7173939
File Type
2
Mime Type
image/jpeg
Sections Found
ANY_TAG, IFD0, COMMENT, EXIF
HTML Sizes
width="4000" height="3000"
Image Height
3000
Image Width
4000
Color
TRUE
Byte Order Motorola
FALSE
Image Description
SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 4000 / length of data axis 1
NAXIS2 = 3000 / 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 = '2025-05-10T00:33:34' / UTC date that FITS file was created
DATE-OBS= '2023-11-06T01:30:43' / YYYY-MM-DDThh:mm:ss observation start, UT
INSTRUME= 'Nikon D5600' / instrument name
OBSERVER= ' ' / observer name
TELESCOP= ' ' / telescope used to acquire this image
ROWORDER= 'BOTTOM-UP' / Order of the rows in image array
XPIXSZ = 3.92 / X pixel size microns
YPIXSZ = 3.92 / Y pixel size microns
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
FOCALLEN= 709.525 / Camera focal length
CCD-TEMP= 0 / CCD temp in C
SET-TEMP= 0 / Temperature setting in C
EXPTIME = 29.9 / Exposure time [s]
STACKCNT= 10719 / Stack frames
LIVETIME= 320471 / Exposure time after deadtime correction
EXPSTART= 2.46025e+06 / Exposure start time (standard Julian date)
EXPEND = 2.46027e+06 / Exposure end time (standard Julian date)
FILTER = 'mixed ' / Active filter name
ISOSPEED= 200 / ISO camera setting
HISTORY RGB alignment (PSF)
END
Orientation
The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side
1
