Messier 67

Observation Notes:

M67 is a nice, subtle open cluster, particularly in comparison to M41 which I viewed earlier in the evening. There is one bright yellow-orange star on the east side of the cluster. There are a few more orange stars scattered around. The main body of the cluster appears to be around 18' across. The stars seem to keep to an irregular, roundish boundary. I plotted 40 stars in that area, down to mag. 11.7.


M67 resides 2,700 light years distant, and is a peculiar open cluster due to its age. Its age is estimated between 3.2 and 4 billion years, and only a few are known to be older. Open clusters usually fly apart much sooner than this. It's anticipated that M67 can continue to exist as an open cluster for another 5 billion years. This cluster contains at least 500 stars, of which nearly 200 are white dwarfs. Because M67 is of a similar age to the solar system, and its stars have a similar composition to the sun, it is a good target for observation of solar-type stars.

Reportedly, M67 was originally discovered by Johann Elert Bode prior to 1779. Charles Messier rediscovered the cluster in 1780 and resolved it into stars.

SubjectMessier 67 (NGC 2682)
ClassificationOpen Cluster
PositionCancer [RA: 8:50.4 / Dec: +11:49]*
Date/Time01/16/05 - 1:30 AM
Observing Loc.Flagstaff, AZ - Home
InstrumentOrion SVP 6LT Reflector (150 mm dia./1200 mm F/L)
Eyepieces/Mag.32 mm (37X)
ConditionsMostly clear, cold (18°F), some thin high cirrus
TransparencyMag 5.2

*Based on published data.

The Cerulean Arc

My weblog for
everything else non-astronomy

Pin at will!

(Thanks for maintaining
return links.)

About this Entry

This page contains a single entry by Jeremy Perez published on January 16, 2005 1:30 AM.

Messier 41 was the previous entry in this blog.

Lambda Orionis (Struve 738) is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.


Monthly Archives

Powered by Movable Type 5.2.3