I always stacked my astro shots, but a single 5 minute exposure last night proved me wrong

For years, I stacked 30 second shots to avoid star trails, thinking more frames meant a cleaner image. Last night with my new tracker, I tried a single 5 minute exposure of the Orion Nebula. The detail and color depth were way better than my usual 50 frame stack. The core wasn't blown out, and the faint outer gas was actually visible. I guess the extra total light gathering from one long shot beat my old method. Has anyone else found a sweet spot with longer single exposures over stacking?

3 comments

3 Comments

danielb431mo ago

My tracker lets me push 4 minutes before guiding issues. The extra integration time is key.

david_rivera41mo ago

Honestly, I've found pushing past two minutes is asking for trouble on most nights. The atmosphere just doesn't hold still that long, so those extra minutes often add blur, not signal. My best shots consistently come from stacking more short exposures, not fighting for longer ones. Maybe your skies are just way steadier than mine.

benc531mo ago

Yeah, the part about the atmosphere not holding still is exactly it. I tried forcing five minute subs for a while because my gear could technically do it, but the results were always softer. I get way sharper stars now by just collecting a ton of ninety second frames. It feels like you're fighting turbulence after a certain point, and stacking wins every time.