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Astrophotography News 31 July 2025 - 13 December 2025

Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

On December 13, 2025, Comet 3I/ATLAS—the third confirmed interstellar object ever found crossing our solar system—is back in the headlines as astronomers release fresh observations that deepen the mystery (and the science) of this rare cosmic flyby. It’s not just
Astrophotography Showdown: Sony A7 IV vs Canon EOS Ra vs Nikon D810A – Which Captures the Cosmos Best?

Astrophotography Showdown: Sony A7 IV vs Canon EOS Ra vs Nikon D810A – Which Captures the Cosmos Best?

The Sony A7 IV uses a 33MP back-illuminated CMOS sensor with ~5.12µm pixels and delivers unusually clean high-ISO performance, with ISO 12,800 showing little noise and star-eater largely mitigated. The Canon EOS Ra modifies its infrared-cut filter to pass roughly
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