Flat Fields are important for perfect astrophotos

a good flat field image is an important base for good astrophotos
Every beautiful astrophoto begins with some basic calibration before the imager moves on to additional processing.

Flat fielding is the part of this calibration that mitigates
the effect of the CCD’s pixel-to-pixel variation in sensitivity,
vignetting in the optical system, and shadows created
by dust on the components of the imaging system.

Here you find the right tools, to make your perfect flat-field.

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