Jupiter put on a spectacular show at opposition, appearing at its brightest and closest as I captured a rare transit of Callisto across the planet, with Io, Europa, and Ganymede visible nearby. I’ll explain what opposition means, explore Jupiter’s fascinating moons, and preview upcoming highlights—including the January 23 Moon–Saturn–Neptune conjunction you won’t want to miss.

“Learn how to process a moving comet in PixInsight without star trails. This step-by-step guide covers CometAlignment, PixelMath blending, and pro tips for a clean, stunning image.”