Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  B150
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Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
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Barnard 150 - A dancing shadow in Cepheus...

Getting plate-solving status, please wait...
Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
Powered byPixInsight

Barnard 150 - A dancing shadow in Cepheus...

Acquisition details

Dates:
May 28, 2020 ·  May 29, 2020
Frames:
40×600(6h 40′) -15°C bin 1×1
60×300(5h) -15°C bin 2×2
Integration:
11h 40′
Darks:
64
Flats:
12
Bias:
101
Avg. Moon age:
6.19 days
Avg. Moon phase:
37.52%
Bortle Dark-Sky Scale:
4.00

RA center: 20h50m26s.89

DEC center: +60°0939.4

Pixel scale: 1.533 arcsec/pixel

Orientation: 173.982 degrees (flipped)

Field radius: 0.748 degrees

More info:Open 

Resolution: 2741x2199

File size: 27.7 MB

Locations: Charente-Maritime, Charente-Maritime, Charente-Maritime, France

Data source: Backyard

Description

The dark nebula Barnard 150, located about 1200 light years away.

We traditionally see a "seahorse" there, but for my part I have the impression to see a moonwalk-dancer with a long cape behind him ;)

The processing of this image gave me a lot of trouble, due to the presence of a parasitic reflection in the lower left-hand corner (both on the luminance and on the RGB layer - see version B for an exemple on the raw RGB layer).

Of course, it was not possible to cross over because of the already reduced field strength...

In the end I managed to correct it as best as I could, but I shall have to do it again later, with a larger field and without reflections!

This image was awarded ApodGrag (29th December 2020).

--------------------------

La nébuleuse obscure Barnard 150, située à environ 1200 années-lumière.

On y voit traditionnellement un hippocampe, mais pour ma part j'ai l'impression de voir un danseur de moonwalk avec une longue cape derrière lui... ;)

Le traitement de cette image m'a posé beaucoup de soucis, en raison de la présence d'un reflet parasite dans le coin inférieur-gauche (tant sur la luminance que sur la couche RGB - cf version B pour la version brute RGB).

Pas possible évidemment de croper compte-tenu du champ déjà réduit...

Au final j'ai réussi à le corriger du mieux que j'ai pu ; mais à refaire avec un plus grand champ et sans reflets !

Cette image a été primée ApodGrag (29 décembre 2020).

Comments

Revisions

    Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
    Original
    Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
    B
    Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
    C
  • Final
    Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux
    D

B

Description: Image RGB avec le reflet parasite...

Uploaded: ...

C

Description: Slight improvement of star color.

Uploaded: ...

D

Description: Slight improvment of noise reduction

Uploaded: ...

Sky plot

Sky plot

Histogram

Barnard 150 - A dancing shadow in Cepheus..., 



    
        

            Jean-Baptiste Auroux