Log in

View Full Version here: : M67 - The King Cobra Cluster


Andy01
19-02-2019, 05:06 PM
Was at the end of an imaging run, it was still clear with an hour or so of darkness left so heck, why not point the scope at some random DSO and see what I get? :shrug:

Turns out that this is M67 - an open cluster located in Cancer – it is much smaller than it’s larger neighbour M44 -The Beehive Cluster, and while not the oldest open cluster (with an age estimated to be 4 billion years), it is close at about 800-900 ly distance.

M67 has more than 100 stars similar to the Sun, and numerous red giants.
It appears roughly the same size as the full Moon.

M67 has a lovely mix of blue & yellow stars, dunno if I can spot the cobra though? :question:

It's absolutely short on integration time, but sometimes it's nice to take a snap just for the fun of it! :D
10x120 sec RG&B from my light polluted suburban backyard, processed in APP & PS.

Placidus
19-02-2019, 05:39 PM
Well worth the effort. A ripper of a cluster. The star colours are lovely.

Minor: the background seems a bit mottled. That could be due to severe light pollution and ageing flats. Given that there's no nebulosity, you could probably just pull a slider in photoshop and make the background go away.

Four billion years seems utterly antique for an open cluster. Getting up towards globular cluster territory. Open clusters normally fall apart after just a few million years.

Best,
MnT

Andy01
19-02-2019, 07:04 PM
Done, thanks! Given the lack of integration time - it's likely to be a result of the LP, and a known (required) firmware upgrade to the camera that I hav'nt installed yet :)

Geoff45
19-02-2019, 09:22 PM
Nice point and click picture Andy

Geoff45
20-02-2019, 08:31 AM
Yes, it's a weird cluster. At one time there was speculation that it could be an evaporated globular cluster, but that seems not to be the case.
Some info here https://en.wikipedia.org/wiki/Messier_67
and a nice wide field shot here, which looks very globular clusterish
https://apod.nasa.gov/apod/ap070809.html

gaseous
20-02-2019, 01:05 PM
Beautiful mix of star colours there - lovely shot.

gaseous
20-02-2019, 01:36 PM
4-5 exquisitely small PGC galaxies just visible in there too, so Skysafari tells me.