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11/09/2009

November 7th 2009 Observing Session




November 7th, 2009

Scope: XT10, 21mm, 13mm Stratus and 5mm Hyperion

NGC 7727 is a Galaxy in Aquarius and was the first object I observed tonight. It has a listed magnitude of 10.6 and a size of 5.6' x 4'. O'Meara's directions in the guide were spot on and his small finderchart rocks. Use them on this object. NGC 7727 is a bright, small galaxy. It appears almost edge on to me. Slight structure is visible to the NE and the SE sections with diffusion from the core to the edge. The core is very bright, brighter then the rest of the galaxy.
























NGC 136 is an Open Cluster in Cassiopeia. It has a limited magnitude around 9 and its size is 1.5'. This is a very small and very poor open cluster. I passed by it twice before recognizing it. 92x shows a halo with very faint stars around 13th magnitude. No chains are evident, and this is a very small and tight open cluster. Once was enough on this one.

























The next object this night in my Herschel hunt is NGC 129, another open cluster in Cassiopeia. This cluster has a listed magnitude of 6.5 and its size is listed as 12'. It has an asymmetrical shape at 57x, almost an eclipse in shape. At 92x the cluster is very loose and looks to be dispersing. There are a variety of magnitudes but a rather rich open cluster. I estimate it to be at 150 to 200 stars, with more popping out. Nice open cluster.





















NGC 7789 was the next open cluster and is located in Cassiopeia also. It's listed magnitude is 8.5 and its size is 5.0'. This is a large and beautiful open cluster that will be a fun challenge to sketch. I did not sketch it this night as I knew it would deserve some really dedicated time. I will come back and sketch this one. It is a very rich open cluster well over 400 to 500 stars, and is poorly detached, with a wide range of magnitudes evident. Core is circular in shape with a lot of stars just hinting at popping out. Truly beautiful and yes, Messier should have included this one!






















NGC 7790 is another open cluster in Cassiopeia. It's listed magnitude is 8.5 and its size is 5.0'. This is a small open cluster that shows about a half dozen stars with a halo at 57x. At 92x the cluster's main stars take on a pentagon shape to me, with many stars fainter then 10th magnitude wanting to pop out. The cluster is very tight and some variance in magnitude is evident in the stars of this cluster. Upon further observation I discern a triangular shape at the core using averted vision.




















NGC 225 is another open cluster in Cassiopeia. It has a listed magnitude of 7.0 and its size is listed as 15'. This is a very loose open cluster and at 92x this cluster also looks to be dispersing. It looks like a broken butterfly or a broken heart. There is some minor variance in stars are evident and there is a dark lane separating the two parts. This is a medium rich open cluster, with 50 to 100 stars. This was a fun and easy sketch.


















NGC 381 was the last open cluster in Cassiopeia for this night. It has a listed magnitude of 9.3 and a size of 7.0'. This is a medium rich open cluster with many more hinting at wanting to come out. There is a variance in magnitudes in the stars and there seems to be a loose chain running north to south, with a bulb or circle of stars at the end. There is a glow of unresolved stars with averted vision and using a breathing technique.


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