Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 6939  ·  NGC 6946  ·  The star ηCep
Fireworks Nebula, 



    
        

            Scott Sloka
Fireworks Nebula
Powered byPixInsight

Fireworks Nebula

Fireworks Nebula, 



    
        

            Scott Sloka
Fireworks Nebula
Powered byPixInsight

Fireworks Nebula

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106EDXIII

Imaging cameras: Apogee Aspen CG16M

Mounts: SkyWatcher EQ6

Guiding cameras: qhy5v

Filters: LRGB


Dates:Aug. 2, 2019

Integration: 0

Avg. Moon age: 1.60 days

Avg. Moon phase: 2.86%


Basic astrometry details

Astrometry.net job: 2894227

RA center: 20h44m47s

DEC center: +60°3910

Pixel scale: 3.496 arcsec/pixel

Orientation: 271.674 degrees

Field radius: 2.592 degrees


Resolution: 1824x1847

Data source: Backyard

Description

This is a single frame of what will hopefully be a 4 frame mosaic of this region. The incredible number of stars in this image obscure the underlying structures, but I find both revisions fascinating for the capacity to display the vastness and complexity of our universe. Any comments/critiques would be well appreciated.

Lum: 24x10min

RGB: 12x5min each

7hrs total

Data were acquired at my parent's cottage in a (grey Bortle 2) in cottage country, Ontario.

The final images are more of an experiment in presenting the low-level dusty parts of the universe. I wrote an algorithm in Python to eliminate the smaller stars, trying to minimize distortion as much as possible. I am still tweaking the algorithm, but may upload it to GitHub once I am happier with it. Any comments on the star reduction would be much appreciated as well.

I hacked the algorithm to protect both the fireworks galaxy and the globular cluster. It was hard to find a satisfactory way to present them without creating funny artifacts.

Comments

Revisions

  • Fireworks Nebula, 



    
        

            Scott Sloka
    Original
  • Final
    Fireworks Nebula, 



    
        

            Scott Sloka
    B

B

Description: This image is star eliminated with my own python star elimination algorithm and then the stars are slightly reduced with Pixinsight to reduce how bright they appear with 10min subs. I hacked the algorithm to protect both the fireworks galaxy and the globular cluster. It was hard to find a satisfactory way to present them without creating funny artifacts.

Uploaded: ...

Sky plot

Sky plot

Histogram

Fireworks Nebula, 



    
        

            Scott Sloka