IC 4756 (Cr 386, Mel 210) Ser - open cluster
Date: 3.10.2026
Equipment: ZWO Seestar S30 Pro
Exposure: 34x10sec
Location: Havlíčkův Brod
Processing: StackingWizard, AstroWizard, Photoshop
Description: IC 4756 (also known as Graff's Cluster or Secret Garden Cluster) is a large bright open cluster in the constellation Serpens.