Did you know that the most distant object visible to the naked eye in the night sky is our neighbor? Located roughly 2.5 million light-years away, M31—the Great Andromeda Galaxy—is a majestic spiral galaxy spanning over 200,000 light-years, making it significantly larger than our own Milky Way.
This sharp cosmic portrait reveals the intricate structural details of M31’s galactic disk. Striking reddish and pinkish emission nebulae glow across the spiral arms, representing immense regions of ionized hydrogen (H II regions) where intense star formation is actively occurring. These cosmic nurseries are framed by dense, dark lanes of interstellar dust, silhouetted against the starlight of billions of older stars that populate the galactic core.
The wide-field view also captures two prominent satellite companions orbiting Andromeda: the compact elliptical galaxy M32, visible as the bright, dense stellar concentration just above the core, and the elongated dwarf elliptical galaxy M110, positioned toward the bottom left. Together with the Milky Way, these systems form the dominant members of our Local Group of Galaxies.
DATA
Image Credits & Copyright: Andrea Bavaro
Telescope/Optics: Takahashi FSQ-85ED (FSQ85q)
Camera: QSI 683WSG
Mount: Sky-Watcher EQ6 Pro
Location: Tuscany, Italy
Date: September 2026
Integration Time:
Luminance (L): 74 x 600s
Hydrogen-Alpha (Ha): 39 x 600s
Red (R): 33 x 300s
Green (G): 33 x 300s
Blue (B): 33 x 300s
Total Exposure: 27 hours and 5 minutes
Link: www.instagram.com/bavaro_andrea_astro/