Start here · Essential guide
Star Reduction in PixInsight
Learn the main ways to reduce stars in PixInsight, from Morphological Transformation with a star mask to star removal and scripts, plus common problems.
Astrophotography
Astro Image Processing
3 guides, starting with Star Reduction in PixInsight.
EKOS Astronomy Software Guide
EKOS is the astrophotography control suite in KStars. Learn what it does, how its modules work, a typical setup flow, and how it compares with NINA.
FWHM in Astronomy: What It Means and How to Measure It
FWHM measures how widely a star's light spreads. Learn the definition, how to calculate it, the Gaussian and 1/e2 conversion, and how to measure it in practice.
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