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Sirius and The Pup - Heavily Processed, 





    
        

            Corey Rueckheim

Sirius and The Pup - Heavily Processed

Technical card

Resolution: 320x240

Dates:Nov. 23, 2019

Integration: 0.0 hours

Avg. Moon age: 26.10 days

Avg. Moon phase: 12.77%

Astrometry.net job: 3102289

Locations: Lafayette Home, Sparta, WI, United States

Data source: Backyard

Description

I wanted to try to get an image of "The Pup" - Sirius' white dwarf companion. To do this, I heavily processed a crop of the following image:

I took this image of Sirius, duplicated it in GIMP, subtracted the copy from the original, then blurred the subtracted copy. By tweaking the blur I am convinced "The Pup" has become visible!

It is difficult to determine where the center of Sirius is supposed to be given the odd shape, but I made my best guess. I measure the bluish little blob that I suspect to be The Pup to be about PA 65° (about 10 o'clock), just beyond the edge of the bright ring artifact, lying about 33 pixels from the center. According to SkySafari, it should be at PA 68.6° and about 30 pixels. Given the uncertainties involved in my image, I am convinced I've found it!

I think I should be able to get a much better image of this by recording a video of the star and using lucky imaging. I'm not yet sure how to do this, but it is now squarely on my list of future goals.

Comments

Author

Kornephoros
Corey Rueckheim
License: None (All rights reserved)
1241
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Histogram

Sirius and The Pup - Heavily Processed, 





    
        

            Corey Rueckheim

In these public groups

Central USA