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Wildrik Botjes Planetarium
Physics & Astronomy Department

Astr110 Photography Projects, Spring 2008

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Open Cluster (M 48), Aaron Roorda

M 48 is an open cluster located in the Hydra constellation. The open cluster is 23 light years in diameter and is 1,500 light years away from earth. The cluster of stars doesn't look like anything special at first glance, but over 50 stars within the cluster reach magnitudes over 13. In good viewing conditions the cluster is viewable by the naked eye and appears to be brighter than other objects in the area.

The cluster was originally catalogued by Messier in 1771 but was placed in the wrong position on the star maps and was lost until it was rediscovered in 1934 by Oswald Thomas and again in 1959 by T.F. Morris. After being initially lost on Messier's sky maps the cluster was listed as "discovered" by two other astronomers who were also cataloging objects in the 18th and 19th centuries.

References:
"M 48." WikiSky. <http://server6.wikisky.org/starview?object=Messier+48>.

Frommert, Hartmut and Kronberg, Christine. "M 48." Students for the Exploration and Development of Space. <http://seds.org/messier/m/m048.html>

Right Ascension (J2000) 8:13:8
Declination (J2000) -05:48:00
Filters used clear(C)
Exposure time per filter 1x60 seconds in C
Date observed

April 4, 2009(C)