M110 (NGC 205) Observation Guide — Elliptical Galaxy in Andromeda

Overview

M110 is an elliptical galaxy in Andromeda, catalogued as NGC 205. At Magnitude 8.5, it lies roughly 3 million light-years away. Autumn evenings bring it to prime position, though the target suits intermediate observers.

Elliptical galaxies are smooth, football-shaped systems composed mainly of old stars. They contain little gas or dust, and star formation within them is largely complete.

Basic Data

Physical Characteristics

M110 lies about 3 million light-years away and shines at Magnitude 8.5. Like M32, it is a satellite galaxy of the Andromeda Galaxy (M31), and all three objects can fit within the same wide-field frame.

Observation Guide

Finding It

M110 is in Andromeda, close to M31. Autumn evenings around 8–10 PM bring it to a good position. Use Andromeda's main stars as anchors, then confirm the location with a star chart or app.

Tips for Observing

Dark skies and a larger aperture help bring out M110's diffuse halo. Low magnification and a wide field are essential — the galaxy's surface brightness is low, and it rewards patience and dark adaptation.

Recommended Equipment

A small telescope with 80 mm aperture or more under reasonably dark skies is appropriate.

Astrophotography Tips

M110 is typically photographed as part of the M31 system, often appearing in the same wide-field frame as M31 and M32. An Equatorial mount, high ISO, and long exposures combined with image stacking reveal the galaxy's diffuse structure clearly.

Summary

M110 is a satellite of the Andromeda Galaxy — an intermediate-level target best viewed alongside M31 and M32 on a clear autumn night.