Skip to Navigation | Skip to Content

M34 Open Cluster
Chelsea Bartman

Previous image Up to Astr110 Index Next image M34 open star cluster

M34 is a open cluster. Open clusters are located in the disk of the galaxy. An open cluster’s stars are younger in age compared to a typical globular star cluster. In an open cluster all of the stars are about the same distance, which because they only occupy minimal area of space. The picture above has a height of about 6 light years and a width of 9 light years. The stars can amount to several thousand star. M34 was found as early as before 1654 by Giovanni Batista Hodierna.  Charles Messier discovered the cluster independently on August 25, 1754. M34 can be found in the constellation Perseus.

In this picture of M34 the different colors of M34’s stars are visible. The brighter stars in the cluster are bluer. The smaller stars then are redder than the big ones visible in the image. The colors of the stars also tells us about temperature. The blue stars have the highest temperatures, while the small red stars are the coolest stars in the cluster. The stars in between red and blue are in the order of light blue, white, yellow, orange from highest to lowest temperatures.


Bennett, Jeffrey, Megan Donahue, Nicholas Schnieder, and Mark Voit. The Cosmic Perspective. San Francisco: Pearson Education, Inc., 2010.

Frommert, Hartmut, and Christine Kronberg. "Open Star Clusters." SEDS Messier Database. Students for the Exploration and Development of Space, 27 Aug. 2007. Web. 6 Dec. 2010.

Right Ascension (J2000) 02:42:00
Declination (J2000) +42:47:00
Filters used Clear(C), Blue(B),Red (R), and Visual(V)
Exposure time per filter 60 Seconds in Red and Visual, 300 Seconds in Blue, and 30 Seconds in Clear
Date observed

10/26/2010 in Clear, Blue, Red, and Visual.



Secondary content.


Side content.