Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205
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M13, The Great Hercules Globular Cluster, David Dearden
M13, The Great Hercules Globular Cluster
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M13, The Great Hercules Globular Cluster

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Description

Date: 25 Jun 2012

Subject: M13, Great Hercules Globular Cluster

Scope: AT8IN+ 0.5x Antares telereducer

Filter: Baader UHC-S

Mount: CG-5 (Synta motors)

Guiding: Orion ST80 + 0.5x Antares telereducer + DSI Ic + PHD

Camera: DSI IIc (cooled at 2 A, 7.5 V)

Acquisition: Nebulosity 3.0.6

Exposure: 25 x 180 s

Stacking: Neb 3, bias included, normalize first, trans+rot align, 1.5 SD stack

Processing: digital development with sharpening, power stretch, saturation boost, GREYCStoration in N3, CS5 GradientXTerminator, levels + curves, Astronomy Tools color blotch reduction, star color enhance, local contrast enhance

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M13, The Great Hercules Globular Cluster, David Dearden