Celestial hemisphere:  Northern  ·  Constellation: Serpens (Ser)  ·  Contains:  IC 4756
IC 4756 / Cr 386 / Mel 201, Ron Bokleman
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IC 4756 / Cr 386 / Mel 201

IC 4756 / Cr 386 / Mel 201, Ron Bokleman
Powered byPixInsight

IC 4756 / Cr 386 / Mel 201

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Description

Graff’s Cluster, also known as open cluster IC 4756, in the “Cauda” or tail part of the constellation Serpens.

It shines at magnitude 4.6. To find it, look 4.5° west-northwest of magnitude 4.6 Alya (Theta [θ] Serpentis).

IC 4756 is a widely scattered open cluster 52' across that appears at dark observing sites as a small, bright haze near the edge of the Milky Way. A beautiful collection of 50 magnitude 9 and 10 stars. The cluster’s brightest star, magnitude 6.4 SAO 123778 / HD 172365, sits at IC 4756’s southeast edge.

This cluster’s common name comes from German astronomer Kasimir Romauld Graff, who independently discovered it in 1922.

NOTE: My first LRGB image and processing effort with PixInsight.

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IC 4756 / Cr 386 / Mel 201, Ron Bokleman

In these public groups

Cloudy Nights

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Open Clusters