M58 (NGC 4579) Observation Guide — A Barred Spiral Galaxy in Virgo

Overview

M58 is a barred spiral galaxy located in the constellation Virgo, cataloged as NGC 4579. With an apparent Magnitude of 9.7 and sitting roughly 600,000 light-years from Earth, this is an advanced-level target that reaches its best observing conditions during spring nights.

A barred spiral galaxy features a distinctive bar-shaped structure running through its core, with spiral arms extending from both ends of the bar.

Key Data

Physical Characteristics

This galaxy lies approximately 600,000 light-years away from Earth and shines at an apparent Magnitude of 9.7.

The universe is thought to contain hundreds of billions of galaxies, yet those listed in the Messier catalog are among the brighter ones — representative deep-sky objects that amateur astronomers can observe with their own telescopes.

Observation Guide

How to Find It

M58 sits within the Virgo region of the sky. During spring, it transits near the meridian between 8 PM and 10 PM, placing it in a favorable position for observation. Start by identifying the main stars of Virgo, then use a star chart or planetarium app to pinpoint its exact location.

Observation Tips

Dark skies and a large-aperture telescope give you the best shot at observing galaxies. Use low magnification to keep the field of view wide, and allow your eyes plenty of time to dark-adapt before you begin.

Recommended Equipment

A medium-aperture telescope is the way to go for this target. Ideally, head to a dark-sky site and use a scope with at least 80 mm of aperture.

Astrophotography Tips

M58 is a popular astrophotography target. Tracked exposures on an Equatorial mount are the standard approach — raise your ISO and shoot long exposures (30 seconds to several minutes) to reveal structural details invisible to the naked eye. Stacking multiple frames brings down the noise and produces a clean, detailed image.

Wrap-Up

M58 is a barred spiral galaxy observable in Virgo and a rewarding challenge for advanced stargazers. You will need a moderately large telescope, but the view is well worth the effort. Give it a try under the spring sky.