Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  IC 1340  ·  NGC 6992  ·  NGC 6995  ·  Network nebula  ·  Veil nebula
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NGC6992 in SHO second version, 



    
        

            Georges
NGC6992 in SHO second version
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NGC6992 in SHO second version

Technical card

Imaging telescopes or lenses: Takahashi FSQ 85ed

Imaging cameras: Atik One 9.0

Mounts: SkyWatcher AZ EQ6 GT

Guiding cameras: iNova NBB-Cx

Software: PixInsight 1.8 Pisinsight 1.8

Filters: Astronomik Ha 1.25" 6nm  ·  Astronomik O3 1.25" 6nm  ·  Astronomik S2 1.25" 6nm



Basic astrometry details

Astrometry.net job: 3247960

RA center: 20h 56' 26"

DEC center: +31° 27' 10"

Pixel scale: 2.203 arcsec/pixel

Orientation: 271.418 degrees

Field radius: 0.973 degrees


Resolution: 2500x1967

Locations: observatoire personnel, Chilly Mazarin, Ile de France, France

Data source: Backyard

Description

Voici ma deuxième version de NGC6992 en SHO. Elle m'a été inspiré par une image du site de Nicolas Outters(http://outters.fr/wp/). ce qui est interessant sur cette image ce sont les filaments de OIII purs que l'on peut voir grace à une soustraction de l'image OIII par celle du Halpha et dont le signal restant est visualisé par la couleur violette.
Voici la formule SHO utilisée dans pixinsight (merci à Baptiste de la ZlochTeam):
R:(~(~S*~(H-O)))*0.5+S*0.5
V:H
B:(~(~O*~(H-S)))*0.5+O*0.5

Here is my second version of NGC6992 in SHO. It was inspired by a picture of the website of Nicolas Outters (http://outters.fr/wp/). what is interesting about this image are the pure filaments of OIII that can be seen because I have subtracted the image OIII by that of Halpha and whose remaining signal is visualized by the color purple.
Here is the SHO formula used in pixinsight (Thank you to Baptiste from ZlochTeam):
R:(~(~S*~(H-O)))*0.5+S*0.5
G:H
B:(~(~O*~(H-S)))*0.5+O*0.5

Ha:54x600s en bin1 de 2018 + 37x600s en bin1 de 2019
OIII: 26x600s en bin1 de 2017 + 21x600s en bin1 de 2018 + 14x600s en bin1 de 2019
SII:30x180s en bin2 de 2019

Total: ~ 26 Heures
Ha:91x600s
OIII:61x600s
SII:30x180s

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