M84 (NGC 4374) Observation Guide — A Lenticular Galaxy in Virgo

Overview

M84 is a lenticular galaxy nestled in the constellation Virgo, also cataloged as NGC 4374. At an apparent magnitude of 9.1 and roughly 600,000 light-years from Earth, this is an advanced-level target that rewards patient observers during the spring sky.

So what exactly is a lenticular galaxy? Think of it as a hybrid between a spiral galaxy and an elliptical one. It has a disk structure, but the sweeping spiral arms you might expect are almost entirely absent.

Key Data

Physical Characteristics

Sitting approximately 600,000 light-years away, M84 shines at an apparent magnitude of 9.1.

The universe is thought to contain hundreds of billions of galaxies, yet those listed in the Messier catalog are among the brighter ones — well within reach of amateur telescopes. M84 is one of those rewarding entries worth tracking down.

Observation Guide

How to Find It

M84 lies within the Virgo cluster region. During spring evenings, it transits around 8:00 to 10:00 PM local time, placing it high enough for comfortable viewing. Start by identifying the main stars of Virgo, then use a star chart or planetarium app to zero in on its exact position.

Observing Tips

Galaxy hunting favors dark skies and generous aperture. Keep the magnification low to maintain a wide field of view, and give your eyes a solid 15 to 20 minutes of dark adaptation before you start looking. Patience is your best accessory here.

Recommended Equipment

A medium-aperture telescope is the way to go for M84. An instrument with at least 80 mm of aperture under dark skies will give you the best chance of picking up this faint glow.

Astrophotography Tips

M84 is a popular target for astrophotographers. Tracking with an equatorial mount is essential — bump up the ISO and try long exposures in the 30-second to several-minute range to pull out structural details invisible to the eye alone. Stacking multiple frames will tame the noise and produce a cleaner, more detailed final image.

Wrapping Up

M84 is a lenticular galaxy in Virgo that sits firmly in advanced-observer territory. You will need a reasonably sized telescope to spot it, but the effort is well worth it. When spring rolls around, make this one a priority on your observing list.