M72 (NGC 6981) Observation Guide — Globular Cluster in Aquarius

Overview

M72 is a Globular Cluster located in Aquarius, cataloged as NGC 6981. With an apparent magnitude of 9.3, it lies About 55,400 light-years from Earth. This Advanced-level object is best observed in the Autumn sky.

Globular clusters are dense, spherical collections of hundreds of thousands to millions of stars. They orbit in the halo of the Milky Way and are among the oldest objects in the universe.

Basic Data

Item	Data
Messier Number	M72
Catalog Number	NGC 6981
Object Type	Globular Cluster
Constellation	Aquarius
Apparent Magnitude	9.3
Distance	About 55,400 light-years
Best Season	Autumn
Difficulty	Advanced
Required Equipment	Medium telescope

Physical Characteristics

This globular cluster lies About 55,400 light-years from Earth and shines at magnitude 9.3. It contains numerous old red giant stars and is estimated to be over 10 billion years old.

Globular clusters are believed to have formed in the early stages of the Milky Way's history, making them key to understanding our galaxy's past.

Observation Guide

How to Find

M72 is located in the Aquarius region. It transits around 20:00–22:00 during Autumn, making it well-positioned for observation. use the main stars of Aquarius as guide stars and confirm the exact position with a star chart or app.

Observation Tips

When observing globular clusters, the contrast between the dense core and the scattered outer regions is the highlight. Larger aperture telescopes allow you to resolve individual stars.

Recommended Equipment

We recommend observing from dark skies with a telescope of 80mm aperture or more.

Astrophotography Tips

For photographing M72, prime-focus astrophotography with a camera attached to a telescope is recommended. Use a tracking mount and appropriate exposure times.

Summary

M72 is a Globular Cluster observable in Aquarius, rated Advanced level. While it requires a somewhat larger telescope, it is a rewarding object to observe. Try observing it in the Autumn night sky!