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NGC6888 "Crescent" or "Medusa" nebula.

Igor Chekalin

Taganrog, Russian Federation

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Artist's Description

NGC6888 “Crescent” or “Medusa” Nebula. 19.5 hours of exposition. Supernova explosion remnants, among Milky Way stars in the background.

Image was taken during 13 observing nights in March/April 2009.

Canon 350Da(baader filter mod), 10" 1:4.7 Newton (F=1200mm)
EQ6PRO SynScan mount, 75mm refractor + QHY6 CCD as a guider

9 hours in H-alpha (Astrodon 6nm), 10 and 20 min. subexpositions mixed. ISO800
10 hours in O-III (Baader 8nm), 20min subexpositions, ISO800

34×2min @ISO200 unfiltered RGB for color stars field and “pseudo-continuum” substraction.

Light-polluted urban sky. About 4.0m visual limit. About 30% of h-alpha frames (10min subexposures) taken under the Moon.

Taganrog, Russia.

Artwork Comments

  • MDC DiGi PiCS
  • Gouzelka
  • Briar Richard
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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