Bortle 7 skies
Nikon D5600 camera
ISO 200
Astro-Tech AT102ED refractor, 714mm focal length, f/7
HoTech 2" SCA field flattener (1X)
iOptron CEM26 mount
30s x 414 frames (3h 27m)
Processing:
Siril 1.2.3:
Crop to 4000 x 3000px
BQ Octantis' technique of white balance, background subtraction, and histogram conditioning
StarNet++:
Star desaturation
Background - modified asinh stretch (4X), generalized hyperbolic stretch, background extraction, GraXpert denoising (2.0.0 model), histogram adjustment
Stars - synthetic blue channel (B=2*G-R), modified asinh stretch (3X), saturation
GIMP 2.10:
Luminance curve
Saturation
Image META information
COMPUTED.UserCommentEncoding
UNDEFINED
COMPUTED.Copyright
Siril v1.2.3
COMPUTED.Thumbnail.Height
192
COMPUTED.Thumbnail.Width
256
IFD0.MinSampleValue
5 5 5
IFD0.MaxSampleValue
4282 4282 4282
IFD0.ICC_Profile
THUMBNAIL.NewSubFile
1
THUMBNAIL.ImageWidth
256
THUMBNAIL.ImageLength
192
THUMBNAIL.PhotometricInterpretation
6
THUMBNAIL.SamplesPerPixel
3
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 = '2024-09-01T18:11:28' / 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 = 3.92 / X pixel size microns
YPIXSZ = 3.92 / Y pixel size microns
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
FOCALLEN= 709.751 / Camera focal length
CCD-TEMP= 0 / CCD temp in C
SET-TEMP= 0 / Temperature setting in C
EXPTIME = 14.95 / Exposure time [s]
STACKCNT= 7452 / Stack frames
LIVETIME= 222815 / Exposure time after deadtime correction
EXPEND = 2.46017e+06 / Exposure end time (standard Julian date)
FILTER = 'mixed ' / Active filter name
END
File Name
gallery_361082_16772_3374358.jpg
Unix Timestamp
1725368907
Original File Size
16093407
File Type
2
Mime Type
image/jpeg
Sections Found
ANY_TAG, IFD0, THUMBNAIL, COMMENT, EXIF
HTML Sizes
width="4000" height="3000"
Image Height
3000
Image Width
4000
Color
TRUE
Byte Order Motorola
FALSE
Thumbnail File Type
2
Thumbnail Mime Type
image/jpeg
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 = '2024-09-01T18:11:28' / 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 = 3.92 / X pixel size microns
YPIXSZ = 3.92 / Y pixel size microns
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
FOCALLEN= 709.751 / Camera focal length
CCD-TEMP= 0 / CCD temp in C
SET-TEMP= 0 / Temperature setting in C
EXPTIME = 14.95 / Exposure time [s]
STACKCNT= 7452 / Stack frames
LIVETIME= 222815 / Exposure time after deadtime correction
EXPEND = 2.46017e+06 / Exposure end time (standard Julian date)
FILTER = 'mixed ' / Active filter name
END
Orientation
The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side