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Contains:  NGC 6188
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NGC 6188. Closeup of the Dragons of Ara, 





    
        

            Russ Carpenter
NGC 6188. Closeup of the Dragons of Ara

NGC 6188. Closeup of the Dragons of Ara

Technical card

Resolution: 2975x2340

Dates:May 14, 2019

Frames: 15x600"

Integration: 2.5 hours

Avg. Moon age: 10.05 days

Avg. Moon phase: 76.90%

Astrometry.net job: 2696975

RA center: 249.828 degrees

DEC center: -48.664 degrees

Pixel scale: 0.961 arcsec/pixel

Orientation: 269.055 degrees

Field radius: 0.505 degrees

Data source: Amateur hosting facility

Remote source: ChileScope

Description

Here is a closeup of two angry dragons in NGC 6188. It’s an excellent narrowband object, with strong signals in all three narrowband channels. I used the SHO palette, following the standard practice of shifting green to gold.

I’ve learned that SHO images are visually boring if there is too much gold color, arising from the Ha signal. Of course, the same thing is true of some HaRGB images, where Ha generates too much red. I hope this image has a pleasing balance of hues.

As a point of comparison, take a look at this APOD: https://apod.nasa.gov/apod/ap181107.html It was also captured at Chilescope.

Tech Notes:
ASA Newtonian, 500 mm aperture, 1900mm focal length, F3.6
FLI Proline 16803, 9 mm pixel, 4096 X 4096
ASA DDM85 equatorial mount
Processing with PixInsight, Topaz Denoise AI, and Affinity Photo

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Author

Russ.Carpenter
Russ Carpenter
License: None (All rights reserved)
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NGC 6188. Closeup of the Dragons of Ara, 





    
        

            Russ Carpenter