June 2021 Monthly Showcase – NGC6357 Lobster Nebula (Narrowband with RGB stars) by Greg McCall

Imaging telescopes or lenses: Sky-Watcher 120ED APO 120mm Refractor
Imaging cameras: QHYCCD QHY600M-PH
Mounts: ASTRO-PHYSICS Mach2GTO German Equatorial Mount (MACH2GTO)
Software: Sequence Generator Pro
Filters: Chroma Blue 50mm · Chroma Green 50mm · Chroma Red 50mm · Chroma SII 5nm 50mm · Chroma Ha 5nm 50mm · Chroma Choma OIII 3nm 50mm
Dates:June 12, 2021

Frames:
Chroma Choma OIII 3nm 50mm: 9×240″ (36′) bin 2×2
Chroma Ha 5nm 50mm: 28×240″ (1h 52′) bin 1×1
Chroma SII 5nm 50mm: 17×240″ (1h 8′) bin 3×3

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