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



    
        

            Thomas Wahl
The Crescent Nebula (NGC 6888) in bicolor
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The Crescent Nebula (NGC 6888) in bicolor

The Crescent Nebula (NGC 6888) in bicolor, 



    
        

            Thomas Wahl
The Crescent Nebula (NGC 6888) in bicolor
Powered byPixInsight

The Crescent Nebula (NGC 6888) in bicolor

Equipment

Imaging Telescopes Or Lenses
Meade (Meade Instruments LX200 16" EMC)
Imaging Cameras
... ALccd9
Mounts
CP-165 (.......... Astrotechniek, CP-165)
Filters
Baader LRGB 2" + enhanced Ha-alpha 3,5nm · OIII (Baader 2" 8.5nm [OIII])
Accessories
Lacerta USB-motorized focuser · OAZ (Lacerta OCTO-PLUS 2 inch focuser) · Starizona (.......... Starizona SCT-Reducer 2" 0.63x)
Software
Photoshop-Elements · Regim (Regim) · AA (Astroart 7.0 64bit)
Guiding Telescopes Or Lenses
.......... self guiding with OAG
Guiding Cameras
SXV-H9 (... SXV-H9)

Acquisition details

Dates:
Aug. 12, 2018
Frames:
Baader LRGB 2" + enhanced Ha-alpha 3,5nm: 32x1200" (10h 40') 50°C bin 1x1
Integration:
10h 40'
Darks:
8
Flats:
16
Flat darks:
8
Avg. Moon age:
1.27 days
Avg. Moon phase:
1.80%

Basic astrometry details

Astrometry.net job: 3257113

RA center: 20h12m09s.8

DEC center: +38°2020

Pixel scale: 0.441 arcsec/pixel

Orientation: 358.890 degrees

Field radius: 0.247 degrees

Resolution: 3240x2397

Data source: Own remote observatory

Description

There are many versions of v. the bicolor crescent moon fog, which is

us in approx. 4,700 light years with a diameter of approx. 25 light years in the constellation

Swan, presented as an emission nebula.

As is well known, you can definitely learn about the color rendering in the context of image processing

deal with. Certainly, with 1,800sec per single exposure, one would naturally something

can reach more depth. But here, too, I think there should be a balanced symbiosis

of time and effort Result can be found. Just a shame that in the web presentation

the JPG compression, some details are unfortunately lost.

Let me now allow my variant for presentation and have fun flying over the

25 light years:

Comments

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The Crescent Nebula (NGC 6888) in bicolor, 



    
        

            Thomas Wahl