pues la ferrari, tambien da viñeteo.
carteroooooo........
a ver si ponemos en estación ese cacharro...
siguen viento y nubes,
esta es mi foto de m51 con reductor... notese que manchita ECHA NIKON...
d70s seis minutos, foco primario reductor .67
1423 de focal.
lx200 de 8"
nota, la foto es un dia, que casualidad, nubladita, y sin procesar
boca corazón.
esta es otra, con bining 2x2, monocromo mismo equipo, 60 segundos.
se ve el viñeteo ?
datos fits de la foto...
Es el lovejoy, tachannn....
SIMPLE = T / Conforms to FITS standard (NOST 100-2.0)
BITPIX = 16 / Number of bits per pixel
NAXIS = 2 / Number of axes
NAXIS1 = 1519 / Width of image
NAXIS2 = 1007 / Height of image
CREATOR = 'Astrometrica 4.4.1.364' / License: Vidal Jose Ramon
DATE = '2007-05-02' / File creation date
BZERO = 32768.000000000000 / Offset to unsigned integer
BSCALE = 1.0000000000000000 / Scaling factor
DATE-OBS = '2007-04-30T00:56:26' / Start of exposure
TIMESYS = 'UTC' / Time Scale
EXPTIME = 60.00 / Exposure time (seconds)
OBJCTRA = '18 24 49.350' / RA of center of the image
OBJCTDEC = '+32 30 04.675' / DEC of center of the image
EQUINOX = 2000.0 / Equinox for coordinates
CTYPE1 = 'RA---TAN' / Coordinate type
CRPIX1 = +7.6000000000000E+02 / Pixel coordinate of x-reference
CRVAL1 = +2.7620603801158E+02 / Coordinate at x-reference
CDELT1 = -5.7929918246381E-04 / Image scale on x-axis, deg per pixel
CROTA1 = -1.3254441353203E+01 / Rotation of coordinate
CUNIT1 = 'deg ' / Unit of coordinate
CTYPE2 = 'DEC--TAN' / Coordinate type
CRPIX2 = +5.0400000000000E+02 / Pixel coordinate of y-reference
CRVAL2 = +3.2501514177174E+01 / Coordinate at y-reference
CDELT2 = -5.7929918246381E-04 / Image scale on y-axis, deg per pixel
CROTA2 = -1.3254441353203E+01 / Rotation of coordinate
CUNIT2 = 'deg ' / Unit of coordinate
OBJECT = ' '
TELESCOP = ' ' / telescope used to acquire this image
INSTRUME = 'Nikon DSLR'
OBSERVER = ' '
NOTES = ' '
XPIXSZ = 15.600000000000001 /Pixel Width in microns (after binning)
YPIXSZ = 15.600000000000001 /Pixel Height in microns (after binning)
XBINNING = 2 /Binning factor in width
YBINNING = 2 /Binning factor in height
XORGSUBF = 0 /Subframe X position in binned pixels
YORGSUBF = 0 /Subframe Y position in binned pixels
ISOSPEED = 'ISO 800 '
IMAGETYP = 'Light Frame' / Type of image
FOCALLEN = 2030.0000000000000 /Focal length of telescope in mm
APTDIA = 200.00000000000000 /Aperture diameter of telescope in mm
APTAREA = 26637.564971757201 /Aperture area of telescope in mm^2
SWCREATE = 'MaxIm DL Version 4.56' /Name of software that created the image
SBSTDVER = 'SBFITSEXT Version 1.0' /Version of SBFITSEXT standard in effect
SWOWNER = 'gus ' / Licensed owner of software
INPUTFMT = 'FITS ' / Format of file from which image was read
SWMODIFY = 'MaxIm DL Version 4.56' /Name of software that modified the image
HISTORY Edit Bin 2x2
CSTRETCH = 'Medium ' / Initial display stretch mode
CBLACK = 145 /Initial display black level in ADUs
CWHITE = 178 /Initial display white level in ADUs
PEDESTAL = 0 /Correction to add for zero-based ADU