Exposure Calculator

Pixel pitch 4.88 µm. · NPF is shorter than the 500 rule on high-resolution sensors (and more accurate).

• Manual focus — set infinity on a bright star in live view.
• Shoot RAW; white balance ~3500–4000 K (you can correct later).
• Tripod + a 2 s shutter delay or a remote release.
• Stopping down 1/3–1 stop from wide open cleans up stars in the corners.

Already have a shot?

Paste a settings string — yours or one from the gallery — and read back what each value did, the aurora it suggests, and whether the stars would trail.