For the Sagittarius Nebula, there isn’t one fixed number of stacked photos — it depends on the target, your camera, and how clean you want the final image to look. In recent public astrophotography examples, people have used anything from 15 stacked exposures for Sagittarius-region objects to 27 stacked frames for a Sagittarius star-cloud image, while other Sagittarius nebula posts mention 30 stacked images or even “thousands of stacked images” for much deeper results.

Quick scoop

If you mean a typical beginner-to-intermediate stack, a practical range is:

  • 15–30 photos for a decent result.
  • 50–100+ photos for noticeably better noise reduction and detail.
  • Hundreds or thousands for very deep, high-end astrophotography work.

What changes the number

The exact stack size depends on:

  • Exposure length.
  • Camera sensor noise.
  • Telescope or lens aperture.
  • Light pollution.
  • Whether you are shooting a bright nebula, star cloud, or a wide Sagittarius mosaic.

A brighter object like the Sagittarius region can look good with fewer frames, but faint dust lanes and nebulosity usually need more integration time.

Simple rule of thumb

If you want a short answer: most amateur stacks are somewhere around 15 to 100 photos , and the deeper you want to go, the more frames you’ll want. Public examples from Sagittarius-area imaging show stacks in that general range, with some ambitious projects going much higher.

TL;DR

  • Small stack: 15–30
  • Solid hobby result: 50–100
  • Deep astro image: 100+
  • Ultra-deep work: hundreds to thousands