Messier Objects

Messier Certificate

About the Catalogue

The Messier Catalogue was developed in the 1700s by Charles Messier (1730-1817). Messier was a comet hunter working with speculum metal reflectors and small refractors that were the equivalent of a modern 80 - 100 mm reflector. As a result of the limited tools that he had to work with, he could not see the true nature of many of his "faint fuzzies" that are revealed in today's modern instruments. The certificate has been awarded since 1981. Handy recording and application forms can be found from a link at the bottom of this page.

Here is an overview of the Messier Catalogue:

Messier Objects Number Notes
Open Clusters 28 Includes many beautiful open clusters like M6, M7, The Beehive, The Pleiades, and The Wild Duck.
Globular Clusters 29 Includes the showpieces M13, M22, M5, and M3.
Bright Nebulae 8 Includes the great Orion Nebula as well as the Lagoon, Swan, Eagle, and Trifid Nebulae.
Planetary Nebulae 4 Includes the impressive Ring Nebula as well as the Dumbbell and Owl planetary nebulae.
Galaxies 40 Includes the amazing Andromeda Galaxy as well as M51, M33, M81/M82, and many others.
Double Stars 1 This is M40, an unusual Messier object.
Total 110  

If Messier were alive today, he would no doubt be astonished at the size, distance, and complexity of the various objects that he catalogued. As a comet hunter, they were often nuisances, since they "got in the way" of his search for new comets.

The RASC's Messier Certificate

A Messier Certificate is awarded to RASC members who visually observe all 110 objects on the Messier list as published annually in the Observer's Handbook. Note that there are several published versions of the Messier list, so it is important to follow this official reference. The Messier list can be started during any season. You must be a member in good standing of the RASC to be awarded this certificate.

Exploring the Messier Catalogue is an excellent observing project, as it contains many showpiece objects. Moreover it allows you to see the Universe from an 18th-century perspective and to learn more about the night sky.

Observing Forms

The RASC Observing Committee has created special observing forms to help you complete the Messier certificate program. These observing forms (653 KB, 110 pg) will help to keep your observations in one organized file. The forms feature all of the important data about each Messier object and a generous area for making notes and drawings.


Here are some recommended resources to help you tackle the Messier Certificate program:


Last modified: 
Saturday, August 1, 2015 - 10:44pm