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NGC1184 Cow Nebula, 


            Scott Sloka
NGC1184 Cow Nebula
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NGC1184 Cow Nebula

Technical card

Imaging telescopes or lenses: Takahashi FSQ-106EDXIII

Imaging cameras: Apogee Aspen CG16M

Mounts: SkyWatcher EQ6

Guiding cameras: qhy5v

Software: Pixinsight

Filters: LRGB

Dates:May 8, 2016

Frames: 24x600"

Integration: 4.0 hours

Avg. Moon age: 1.96 days

Avg. Moon phase: 4.29%

Basic astrometry details job: 2894218

RA center: 3h 12' 6"

DEC center: +80° 40' 15"

Pixel scale: 3.494 arcsec/pixel

Orientation: 270.935 degrees

Field radius: 2.484 degrees

Resolution: 1824x1755

Data source: Backyard


This is another long exposure image to look for faint dust/IFN. I like to call this NGC1184, but that was the tiny object in the middle that I could plate solve to, and the capture is of the Mandel Wilson Cow Nebula/MW 7. There appears to be some amount of dust in this area. 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.



Scott Sloka
License: None (All rights reserved)


  • NGC1184 Cow Nebula, 


            Scott Sloka
  • Final
    NGC1184 Cow Nebula, 


            Scott Sloka


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.

Sky plot

Sky plot


NGC1184 Cow Nebula, 


            Scott Sloka