IOTW: M20 by Diego Colonello

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Name: Diego Colonello Object: M20 Description: M 20 RGB Technical card Imaging telescope or lens:SkyWatcher / Sidereal Trading Mod. 10 inch F4 Klauss Helmerichs C.F. Tube Imaging camera:ZWO Optical ZWO ASI 1600MM cool Mount:TAKAHASHI NJP Temma 2 Guiding telescope or lens:SkyWatcher / Sidereal Trading Mod. 10 inch F4 Klauss Helmerichs C.F. Tube Guiding camera:QHY5L-II Software:Main […]

IOTW: Crescent Nebula Challenge by Chris Plonski

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Name: Chris Plonski Object: Crescent Nebula Processing Challenge Description: Deconvolution MLT Noise reduction Bicolor mix: R=HA, B=OIII, G=(HA*OIII)*1.5 Magenta star removal Background Neutralization, Color Cal Histogram Stretch Inverse masked black compression ACDNR on darks Reset black point HDRMultiScaleTransform Local Histogram Equalization Masked Curves Iterations Star reduction Final fine level and color tweaks in Windows Photo […]

IOTW: Horsehead Nebula by Jeffery Shokler

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Name: Jeffrey E. Shokler Object: Horsehead Nebula (IC 434, Barnard 33) & Flame Nebula (NGC 2024) Description: Canon 5D Mark II (astromodified; Baader UV/IR cut) Stellarvue 130EDT (f7) Celestron CGEM mount 1600 ISO 14×5 min subexposures (70min/1.2hr total integration) Guided (Lacerta MGEN II) PixInsight (calibrated, registered, stacked, post-processed) Photoshop (finish processing)