Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
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NGC 6888, the Crescent Nebula, 


            Kathy Walker
NGC 6888, the Crescent Nebula
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NGC 6888, the Crescent Nebula

Technical card

Imaging telescopes or lenses: Orion 200mm f/4 Newtonian astrograph

Imaging cameras: Atik 383L+ mono

Guiding telescopes or lenses: KW Telescopes KWIQ Guider

Guiding cameras: QHY5

Software: AstroTotilla  ·  Stark-Labs Nebulosity3.1  ·  Pixinsight 1.8  ·  PHD2

Filters: Astrodon 5nm Halpha  ·  Astrodon LRGB

Accessory: TeleVue Paracorr Type 2

Dates:Aug. 20, 2014

Astrodon 5nm Halpha: 5x600" (50') -20C
Astrodon LRGB: 9x300" (45') -20C

Integration: 1h 35'

Avg. Moon age: 24.95 days

Avg. Moon phase: 21.92%

Basic astrometry details

Astrometry.net job: 345377

RA center: 20h11m44s.6

DEC center: +38°1944

Pixel scale: 1.203 arcsec/pixel

Orientation: -168.324 degrees

Field radius: 0.702 degrees

Resolution: 620x467

Locations: Baie Ste. Marie Observatory, St. Bernard, Nova Scotia, Canada


Clouds interrupted the session, so I only had one red frame and no luminance. I substituted Ha for red and synthesized luminance from the other frames.


Sky plot

Sky plot


NGC 6888, the Crescent Nebula, 


            Kathy Walker