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NGC 6888, Crescent Nebula, UHC-S Filter, David Dearden

NGC 6888, Crescent Nebula, UHC-S Filter

Equipment

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Acquisition details

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Description

The revision was 53 300-sec subframes from the same dataset as the original, processed with StarTools using Life:Isolation.

Date: 20 Jun 2012

Subject: NGC 6888, Crescent Nebula

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, 7.0 V, but I don't think it was working)

Acquisition: Nebulosity 3.0.6

Exposure: 39 x 300 s

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

Processing: Digital development, Keller stretch, power stretch, a little saturation boost, unsharp mask in N3, CS5 curves + levels

Comments

Revisions

  • Final
    NGC 6888, Crescent Nebula, UHC-S Filter, David Dearden
    Original
  • NGC 6888, Crescent Nebula, UHC-S Filter, David Dearden
    B

Histogram

NGC 6888, Crescent Nebula, UHC-S Filter, David Dearden