Messier 104, the Sombrero Galaxy, is a spiral galaxy of somewhat ambiguous classification straddling the Virgo/Corvus border, often described as intermediate between a spiral and a lenticular galaxy.

Click the image to zoom in (4 steps), then again for full view · hover to see it annotated · open full resolutionAnnotated image · click to zoom in (4 steps), then again for full view · open full resolutionSky location chart · click to zoom in (4 steps), then again for full view · open full resolution

Messier 104, the Sombrero Galaxy, is a spiral galaxy of somewhat ambiguous classification straddling the Virgo/Corvus border, often described as intermediate between a spiral and a lenticular galaxy. It lies at a distance of roughly 30 million light-years (estimates commonly range from 28-31 million). Its defining features are an unusually large central bulge, a very bright nucleus (host to a supermassive black hole of roughly a billion solar masses), and a prominent, sharply defined dust lane crossing in front of the disk, which together give it its hat-like silhouette when viewed nearly edge-on. Its high surface brightness makes it a rewarding target even in shorter broadband exposures, though its relatively small apparent size calls for higher magnification/longer focal lengths to resolve the dust lane and bulge structure clearly.

[Source: Wikipedia, en.wikipedia.org/wiki/Sombrero_Galaxy]

Annotated Image

The annotated version is shown above - click it to zoom. Open the annotated image at full resolution.

Sky Location

The chart above shows where this image sits on the night sky. The yellow outline is its field of view, with the picture itself drawn at its true orientation; north is up and east is left. Click the chart to zoom in, and use "open full resolution" for the full-size chart.

Image Details

Moon Phase:Last Quarter
Camera:Seestar S30
Optics:150 mm focal length, f/5, 30 mm aperture (APO triplet)
Date:2026-04-09
Number of images:128
Exposure per image:60 s
Total imaging time:2 h 8 min

PixInsight Processing

  1. Drizzle Integration (x3)
  2. Image Integration
  3. Background Neutralization
  4. Dynamic Background Extraction
  5. Spectrophotometric Color Calibration
  6. NoiseXTerminator (AI denoise)
  7. Multiscale Adaptive Stretch
  8. BlurXTerminator (AI deconvolution)
  9. Curves Transformation